3.18 utf8 #248

darcyg · 2016-01-18T10:10:16Z

No description provided.

lkl: make get_virtio_blkdev a public library function

(1) use cpu id from bl31 delivers; (2) sp_el0 should point to kernel address in EL1 mode. On ARM64, kernel uses sp_el0 to store current_thread_info(), we see a problem: when fiq occurs, cpu is EL1 mode but sp_el0 point to userspace address. At this moment, if we read 'current_thread_info()->cpu' or other, it leads an error. We find above situation happens when save/restore cpu context between system mode and user mode under heavy load. Like 'ret_fast_syscall()', kernel restore context of user mode, but fiq occurs before the instruction 'eret', so this causes the above situation. Assembly code: ffffff80080826c8 <ret_fast_syscall>: ...skipping... ffffff80080826fc: d503201f nop ffffff8008082700: d5384100 mrs x0, sp_el0 ffffff8008082704: f9400c00 ldr x0, [x0,torvalds#24] ffffff8008082708: d5182000 msr ttbr0_el1, x0 ffffff800808270c: d5033fdf isb ffffff8008082710: f9407ff7 ldr x23, [sp,torvalds#248] ffffff8008082714: d5184117 msr sp_el0, x23 ffffff8008082718: d503201f nop ffffff800808271c: d503201f nop ffffff8008082720: d5184035 msr elr_el1, x21 ffffff8008082724: d5184016 msr spsr_el1, x22 ffffff8008082728: a94007e0 ldp x0, x1, [sp] ffffff800808272c: a9410fe2 ldp x2, x3, [sp,torvalds#16] ffffff8008082730: a94217e4 ldp x4, x5, [sp,torvalds#32] ffffff8008082734: a9431fe6 ldp x6, x7, [sp,torvalds#48] ffffff8008082738: a94427e8 ldp x8, x9, [sp,torvalds#64] ffffff800808273c: a9452fea ldp x10, x11, [sp,torvalds#80] ffffff8008082740: a94637ec ldp x12, x13, [sp,torvalds#96] ffffff8008082744: a9473fee ldp x14, x15, [sp,torvalds#112] ffffff8008082748: a94847f0 ldp x16, x17, [sp,torvalds#128] ffffff800808274c: a9494ff2 ldp x18, x19, [sp,torvalds#144] ffffff8008082750: a94a57f4 ldp x20, x21, [sp,torvalds#160] ffffff8008082754: a94b5ff6 ldp x22, x23, [sp,torvalds#176] ffffff8008082758: a94c67f8 ldp x24, x25, [sp,torvalds#192] ffffff800808275c: a94d6ffa ldp x26, x27, [sp,torvalds#208] ffffff8008082760: a94e77fc ldp x28, x29, [sp,torvalds#224] ffffff8008082764: f9407bfe ldr x30, [sp,torvalds#240] ffffff8008082768: 9104c3ff add sp, sp, #0x130 ffffff800808276c: d69f03e0 eret Change-Id: I071e899f8a407764e166ca0403199c9d87d6ce78 Signed-off-by: chenjh <chenjh@rock-chips.com>

The current implementation of L2CAP options negotiation will continue the negotiation when a device responds with L2CAP_CONF_UNACCEPT ("unaccepted options"), but not when the device replies with L2CAP_CONF_UNKNOWN ("unknown options"). Trying to continue the negotiation without ERTM support will allow Bluetooth-capable XBox One controllers (notably models 1708 and 1797) to connect. btmon before patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#64 [hci0] 59.182702 L2CAP: Connection Response (0x03) ident 2 len 8 Destination CID: 64 Source CID: 64 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#65 [hci0] 59.182744 L2CAP: Configure Request (0x04) ident 3 len 15 Destination CID: 64 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#66 [hci0] 59.183948 L2CAP: Configure Request (0x04) ident 1 len 8 Destination CID: 64 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#67 [hci0] 59.183994 L2CAP: Configure Response (0x05) ident 1 len 10 Source CID: 64 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#69 [hci0] 59.187676 L2CAP: Configure Response (0x05) ident 3 len 7 Source CID: 64 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 #70 [hci0] 59.187722 L2CAP: Disconnection Request (0x06) ident 4 len 4 Destination CID: 64 Source CID: 64 > ACL Data RX: Handle 256 flags 0x02 dlen 12 torvalds#73 [hci0] 59.192714 L2CAP: Disconnection Response (0x07) ident 4 len 4 Destination CID: 64 Source CID: 64 btmon after patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#248 [hci0] 103.502970 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection pending (0x0001) Status: No further information available (0x0000) > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#249 [hci0] 103.504184 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#250 [hci0] 103.504398 L2CAP: Configure Request (0x04) ident 6 len 15 Destination CID: 65 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#251 [hci0] 103.505472 L2CAP: Configure Request (0x04) ident 3 len 8 Destination CID: 65 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#252 [hci0] 103.505689 L2CAP: Configure Response (0x05) ident 3 len 10 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#254 [hci0] 103.509165 L2CAP: Configure Response (0x05) ident 6 len 7 Source CID: 65 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#255 [hci0] 103.509426 L2CAP: Configure Request (0x04) ident 7 len 4 Destination CID: 65 Flags: 0x0000 < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#257 [hci0] 103.511870 L2CAP: Connection Request (0x02) ident 8 len 4 PSM: 1 (0x0001) Source CID: 66 > ACL Data RX: Handle 256 flags 0x02 dlen 14 torvalds#259 [hci0] 103.514121 L2CAP: Configure Response (0x05) ident 7 len 6 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Signed-off-by: Florian Dollinger <dollinger.florian@gmx.de> Co-developed-by: Florian Dollinger <dollinger.florian@gmx.de>

The current implementation of L2CAP options negotiation will continue the negotiation when a device responds with L2CAP_CONF_UNACCEPT ("unaccepted options"), but not when the device replies with L2CAP_CONF_UNKNOWN ("unknown options"). Trying to continue the negotiation without ERTM support will allow Bluetooth-capable XBox One controllers (notably models 1708 and 1797) to connect. btmon before patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#64 [hci0] 59.182702 L2CAP: Connection Response (0x03) ident 2 len 8 Destination CID: 64 Source CID: 64 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#65 [hci0] 59.182744 L2CAP: Configure Request (0x04) ident 3 len 15 Destination CID: 64 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#66 [hci0] 59.183948 L2CAP: Configure Request (0x04) ident 1 len 8 Destination CID: 64 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#67 [hci0] 59.183994 L2CAP: Configure Response (0x05) ident 1 len 10 Source CID: 64 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#69 [hci0] 59.187676 L2CAP: Configure Response (0x05) ident 3 len 7 Source CID: 64 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 #70 [hci0] 59.187722 L2CAP: Disconnection Request (0x06) ident 4 len 4 Destination CID: 64 Source CID: 64 > ACL Data RX: Handle 256 flags 0x02 dlen 12 torvalds#73 [hci0] 59.192714 L2CAP: Disconnection Response (0x07) ident 4 len 4 Destination CID: 64 Source CID: 64 btmon after patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#248 [hci0] 103.502970 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection pending (0x0001) Status: No further information available (0x0000) > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#249 [hci0] 103.504184 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#250 [hci0] 103.504398 L2CAP: Configure Request (0x04) ident 6 len 15 Destination CID: 65 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#251 [hci0] 103.505472 L2CAP: Configure Request (0x04) ident 3 len 8 Destination CID: 65 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#252 [hci0] 103.505689 L2CAP: Configure Response (0x05) ident 3 len 10 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#254 [hci0] 103.509165 L2CAP: Configure Response (0x05) ident 6 len 7 Source CID: 65 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#255 [hci0] 103.509426 L2CAP: Configure Request (0x04) ident 7 len 4 Destination CID: 65 Flags: 0x0000 < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#257 [hci0] 103.511870 L2CAP: Connection Request (0x02) ident 8 len 4 PSM: 1 (0x0001) Source CID: 66 > ACL Data RX: Handle 256 flags 0x02 dlen 14 torvalds#259 [hci0] 103.514121 L2CAP: Configure Response (0x05) ident 7 len 6 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Signed-off-by: Florian Dollinger <dollinger.florian@gmx.de> Co-developed-by: Florian Dollinger <dollinger.florian@gmx.de> Reviewed-by: Luiz Augusto Von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Update 5.4.x+fslc to v5.4.96

The current implementation of L2CAP options negotiation will continue the negotiation when a device responds with L2CAP_CONF_UNACCEPT ("unaccepted options"), but not when the device replies with L2CAP_CONF_UNKNOWN ("unknown options"). Trying to continue the negotiation without ERTM support will allow Bluetooth-capable XBox One controllers (notably models 1708 and 1797) to connect. btmon before patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#64 [hci0] 59.182702 L2CAP: Connection Response (0x03) ident 2 len 8 Destination CID: 64 Source CID: 64 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#65 [hci0] 59.182744 L2CAP: Configure Request (0x04) ident 3 len 15 Destination CID: 64 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#66 [hci0] 59.183948 L2CAP: Configure Request (0x04) ident 1 len 8 Destination CID: 64 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#67 [hci0] 59.183994 L2CAP: Configure Response (0x05) ident 1 len 10 Source CID: 64 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#69 [hci0] 59.187676 L2CAP: Configure Response (0x05) ident 3 len 7 Source CID: 64 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 #70 [hci0] 59.187722 L2CAP: Disconnection Request (0x06) ident 4 len 4 Destination CID: 64 Source CID: 64 > ACL Data RX: Handle 256 flags 0x02 dlen 12 torvalds#73 [hci0] 59.192714 L2CAP: Disconnection Response (0x07) ident 4 len 4 Destination CID: 64 Source CID: 64 btmon after patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#248 [hci0] 103.502970 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection pending (0x0001) Status: No further information available (0x0000) > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#249 [hci0] 103.504184 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#250 [hci0] 103.504398 L2CAP: Configure Request (0x04) ident 6 len 15 Destination CID: 65 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#251 [hci0] 103.505472 L2CAP: Configure Request (0x04) ident 3 len 8 Destination CID: 65 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#252 [hci0] 103.505689 L2CAP: Configure Response (0x05) ident 3 len 10 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#254 [hci0] 103.509165 L2CAP: Configure Response (0x05) ident 6 len 7 Source CID: 65 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#255 [hci0] 103.509426 L2CAP: Configure Request (0x04) ident 7 len 4 Destination CID: 65 Flags: 0x0000 < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#257 [hci0] 103.511870 L2CAP: Connection Request (0x02) ident 8 len 4 PSM: 1 (0x0001) Source CID: 66 > ACL Data RX: Handle 256 flags 0x02 dlen 14 torvalds#259 [hci0] 103.514121 L2CAP: Configure Response (0x05) ident 7 len 6 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Signed-off-by: Florian Dollinger <dollinger.florian@gmx.de> Co-developed-by: Florian Dollinger <dollinger.florian@gmx.de> Reviewed-by: Luiz Augusto Von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

The current implementation of L2CAP options negotiation will continue the negotiation when a device responds with L2CAP_CONF_UNACCEPT ("unaccepted options"), but not when the device replies with L2CAP_CONF_UNKNOWN ("unknown options"). Trying to continue the negotiation without ERTM support will allow Bluetooth-capable XBox One controllers (notably models 1708 and 1797) to connect. btmon before patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#64 [hci0] 59.182702 L2CAP: Connection Response (0x03) ident 2 len 8 Destination CID: 64 Source CID: 64 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#65 [hci0] 59.182744 L2CAP: Configure Request (0x04) ident 3 len 15 Destination CID: 64 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#66 [hci0] 59.183948 L2CAP: Configure Request (0x04) ident 1 len 8 Destination CID: 64 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#67 [hci0] 59.183994 L2CAP: Configure Response (0x05) ident 1 len 10 Source CID: 64 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#69 [hci0] 59.187676 L2CAP: Configure Response (0x05) ident 3 len 7 Source CID: 64 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 #70 [hci0] 59.187722 L2CAP: Disconnection Request (0x06) ident 4 len 4 Destination CID: 64 Source CID: 64 > ACL Data RX: Handle 256 flags 0x02 dlen 12 torvalds#73 [hci0] 59.192714 L2CAP: Disconnection Response (0x07) ident 4 len 4 Destination CID: 64 Source CID: 64 btmon after patch: > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#248 [hci0] 103.502970 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection pending (0x0001) Status: No further information available (0x0000) > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#249 [hci0] 103.504184 L2CAP: Connection Response (0x03) ident 5 len 8 Destination CID: 65 Source CID: 65 Result: Connection successful (0x0000) Status: No further information available (0x0000) < ACL Data TX: Handle 256 flags 0x00 dlen 23 torvalds#250 [hci0] 103.504398 L2CAP: Configure Request (0x04) ident 6 len 15 Destination CID: 65 Flags: 0x0000 Option: Retransmission and Flow Control (0x04) [mandatory] Mode: Basic (0x00) TX window size: 0 Max transmit: 0 Retransmission timeout: 0 Monitor timeout: 0 Maximum PDU size: 0 > ACL Data RX: Handle 256 flags 0x02 dlen 16 torvalds#251 [hci0] 103.505472 L2CAP: Configure Request (0x04) ident 3 len 8 Destination CID: 65 Flags: 0x0000 Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 < ACL Data TX: Handle 256 flags 0x00 dlen 18 torvalds#252 [hci0] 103.505689 L2CAP: Configure Response (0x05) ident 3 len 10 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Option: Maximum Transmission Unit (0x01) [mandatory] MTU: 1480 > ACL Data RX: Handle 256 flags 0x02 dlen 15 torvalds#254 [hci0] 103.509165 L2CAP: Configure Response (0x05) ident 6 len 7 Source CID: 65 Flags: 0x0000 Result: Failure - unknown options (0x0003) 04 . < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#255 [hci0] 103.509426 L2CAP: Configure Request (0x04) ident 7 len 4 Destination CID: 65 Flags: 0x0000 < ACL Data TX: Handle 256 flags 0x00 dlen 12 torvalds#257 [hci0] 103.511870 L2CAP: Connection Request (0x02) ident 8 len 4 PSM: 1 (0x0001) Source CID: 66 > ACL Data RX: Handle 256 flags 0x02 dlen 14 torvalds#259 [hci0] 103.514121 L2CAP: Configure Response (0x05) ident 7 len 6 Source CID: 65 Flags: 0x0000 Result: Success (0x0000) Signed-off-by: Florian Dollinger <dollinger.florian@gmx.de> Co-developed-by: Florian Dollinger <dollinger.florian@gmx.de> Reviewed-by: Luiz Augusto Von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Kai Krakow <kai@kaishome.de>

Mario reported that the kernel was crashing on suspend if ath11k was not able to find a board file: [ 473.693286] PM: Suspending system (s2idle) [ 473.693291] printk: Suspending console(s) (use no_console_suspend to debug) [ 474.407787] BUG: unable to handle page fault for address: 0000000000002070 [ 474.407791] #PF: supervisor read access in kernel mode [ 474.407794] #PF: error_code(0x0000) - not-present page [ 474.407798] PGD 0 P4D 0 [ 474.407801] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 474.407805] CPU: 2 PID: 2350 Comm: kworker/u32:14 Tainted: G W 5.16.0 torvalds#248 [...] [ 474.407868] Call Trace: [ 474.407870] <TASK> [ 474.407874] ? _raw_spin_lock_irqsave+0x2a/0x60 [ 474.407882] ? lock_timer_base+0x72/0xa0 [ 474.407889] ? _raw_spin_unlock_irqrestore+0x29/0x3d [ 474.407892] ? try_to_del_timer_sync+0x54/0x80 [ 474.407896] ath11k_dp_rx_pktlog_stop+0x49/0xc0 [ath11k] [ 474.407912] ath11k_core_suspend+0x34/0x130 [ath11k] [ 474.407923] ath11k_pci_pm_suspend+0x1b/0x50 [ath11k_pci] [ 474.407928] pci_pm_suspend+0x7e/0x170 [ 474.407935] ? pci_pm_freeze+0xc0/0xc0 [ 474.407939] dpm_run_callback+0x4e/0x150 [ 474.407947] __device_suspend+0x148/0x4c0 [ 474.407951] async_suspend+0x20/0x90 dmesg-efi-164255130401001: Oops#1 Part1 [ 474.407955] async_run_entry_fn+0x33/0x120 [ 474.407959] process_one_work+0x220/0x3f0 [ 474.407966] worker_thread+0x4a/0x3d0 [ 474.407971] kthread+0x17a/0x1a0 [ 474.407975] ? process_one_work+0x3f0/0x3f0 [ 474.407979] ? set_kthread_struct+0x40/0x40 [ 474.407983] ret_from_fork+0x22/0x30 [ 474.407991] </TASK> The issue here is that board file loading happens after ath11k_pci_probe() succesfully returns (ath11k initialisation happends asynchronously) and the suspend handler is still enabled, of course failing as ath11k is not properly initialised. Fix this by checking ATH11K_FLAG_QMI_FAIL during both suspend and resume. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03003-QCAHSPSWPL_V1_V2_SILICONZ_LITE-2 Reported-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=215504 Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

Mario reported that the kernel was crashing on suspend if ath11k was not able to find a board file: [ 473.693286] PM: Suspending system (s2idle) [ 473.693291] printk: Suspending console(s) (use no_console_suspend to debug) [ 474.407787] BUG: unable to handle page fault for address: 0000000000002070 [ 474.407791] #PF: supervisor read access in kernel mode [ 474.407794] #PF: error_code(0x0000) - not-present page [ 474.407798] PGD 0 P4D 0 [ 474.407801] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 474.407805] CPU: 2 PID: 2350 Comm: kworker/u32:14 Tainted: G W 5.16.0 torvalds#248 [...] [ 474.407868] Call Trace: [ 474.407870] <TASK> [ 474.407874] ? _raw_spin_lock_irqsave+0x2a/0x60 [ 474.407882] ? lock_timer_base+0x72/0xa0 [ 474.407889] ? _raw_spin_unlock_irqrestore+0x29/0x3d [ 474.407892] ? try_to_del_timer_sync+0x54/0x80 [ 474.407896] ath11k_dp_rx_pktlog_stop+0x49/0xc0 [ath11k] [ 474.407912] ath11k_core_suspend+0x34/0x130 [ath11k] [ 474.407923] ath11k_pci_pm_suspend+0x1b/0x50 [ath11k_pci] [ 474.407928] pci_pm_suspend+0x7e/0x170 [ 474.407935] ? pci_pm_freeze+0xc0/0xc0 [ 474.407939] dpm_run_callback+0x4e/0x150 [ 474.407947] __device_suspend+0x148/0x4c0 [ 474.407951] async_suspend+0x20/0x90 dmesg-efi-164255130401001: Oops#1 Part1 [ 474.407955] async_run_entry_fn+0x33/0x120 [ 474.407959] process_one_work+0x220/0x3f0 [ 474.407966] worker_thread+0x4a/0x3d0 [ 474.407971] kthread+0x17a/0x1a0 [ 474.407975] ? process_one_work+0x3f0/0x3f0 [ 474.407979] ? set_kthread_struct+0x40/0x40 [ 474.407983] ret_from_fork+0x22/0x30 [ 474.407991] </TASK> The issue here is that board file loading happens after ath11k_pci_probe() succesfully returns (ath11k initialisation happends asynchronously) and the suspend handler is still enabled, of course failing as ath11k is not properly initialised. Fix this by checking ATH11K_FLAG_QMI_FAIL during both suspend and resume. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03003-QCAHSPSWPL_V1_V2_SILICONZ_LITE-2 Reported-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=215504 Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Link: https://lore.kernel.org/r/20220127090117.2024-1-kvalo@kernel.org

[ Upstream commit b4f4c56 ] Mario reported that the kernel was crashing on suspend if ath11k was not able to find a board file: [ 473.693286] PM: Suspending system (s2idle) [ 473.693291] printk: Suspending console(s) (use no_console_suspend to debug) [ 474.407787] BUG: unable to handle page fault for address: 0000000000002070 [ 474.407791] #PF: supervisor read access in kernel mode [ 474.407794] #PF: error_code(0x0000) - not-present page [ 474.407798] PGD 0 P4D 0 [ 474.407801] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 474.407805] CPU: 2 PID: 2350 Comm: kworker/u32:14 Tainted: G W 5.16.0 torvalds#248 [...] [ 474.407868] Call Trace: [ 474.407870] <TASK> [ 474.407874] ? _raw_spin_lock_irqsave+0x2a/0x60 [ 474.407882] ? lock_timer_base+0x72/0xa0 [ 474.407889] ? _raw_spin_unlock_irqrestore+0x29/0x3d [ 474.407892] ? try_to_del_timer_sync+0x54/0x80 [ 474.407896] ath11k_dp_rx_pktlog_stop+0x49/0xc0 [ath11k] [ 474.407912] ath11k_core_suspend+0x34/0x130 [ath11k] [ 474.407923] ath11k_pci_pm_suspend+0x1b/0x50 [ath11k_pci] [ 474.407928] pci_pm_suspend+0x7e/0x170 [ 474.407935] ? pci_pm_freeze+0xc0/0xc0 [ 474.407939] dpm_run_callback+0x4e/0x150 [ 474.407947] __device_suspend+0x148/0x4c0 [ 474.407951] async_suspend+0x20/0x90 dmesg-efi-164255130401001: Oops#1 Part1 [ 474.407955] async_run_entry_fn+0x33/0x120 [ 474.407959] process_one_work+0x220/0x3f0 [ 474.407966] worker_thread+0x4a/0x3d0 [ 474.407971] kthread+0x17a/0x1a0 [ 474.407975] ? process_one_work+0x3f0/0x3f0 [ 474.407979] ? set_kthread_struct+0x40/0x40 [ 474.407983] ret_from_fork+0x22/0x30 [ 474.407991] </TASK> The issue here is that board file loading happens after ath11k_pci_probe() succesfully returns (ath11k initialisation happends asynchronously) and the suspend handler is still enabled, of course failing as ath11k is not properly initialised. Fix this by checking ATH11K_FLAG_QMI_FAIL during both suspend and resume. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03003-QCAHSPSWPL_V1_V2_SILICONZ_LITE-2 Reported-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=215504 Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Link: https://lore.kernel.org/r/20220127090117.2024-1-kvalo@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>

Add a big batch of test coverage to assert all aspects of the tcx opts attach, detach and query API: # ./vmtest.sh -- ./test_progs -t tc_opts [...] torvalds#238 tc_opts_after:OK torvalds#239 tc_opts_append:OK torvalds#240 tc_opts_basic:OK torvalds#241 tc_opts_before:OK torvalds#242 tc_opts_chain_classic:OK torvalds#243 tc_opts_demixed:OK torvalds#244 tc_opts_detach:OK torvalds#245 tc_opts_detach_after:OK torvalds#246 tc_opts_detach_before:OK torvalds#247 tc_opts_dev_cleanup:OK torvalds#248 tc_opts_invalid:OK torvalds#249 tc_opts_mixed:OK torvalds#250 tc_opts_prepend:OK torvalds#251 tc_opts_replace:OK torvalds#252 tc_opts_revision:OK Summary: 15/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a big batch of test coverage to assert all aspects of the tcx opts attach, detach and query API: # ./vmtest.sh -- ./test_progs -t tc_opts [...] torvalds#238 tc_opts_after:OK torvalds#239 tc_opts_append:OK torvalds#240 tc_opts_basic:OK torvalds#241 tc_opts_before:OK torvalds#242 tc_opts_chain_classic:OK torvalds#243 tc_opts_demixed:OK torvalds#244 tc_opts_detach:OK torvalds#245 tc_opts_detach_after:OK torvalds#246 tc_opts_detach_before:OK torvalds#247 tc_opts_dev_cleanup:OK torvalds#248 tc_opts_invalid:OK torvalds#249 tc_opts_mixed:OK torvalds#250 tc_opts_prepend:OK torvalds#251 tc_opts_replace:OK torvalds#252 tc_opts_revision:OK Summary: 15/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/20230719140858.13224-8-daniel@iogearbox.net Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Add a detachment test case with miniq present to assert that with and without the miniq we get the same error. # ./test_progs -t tc_opts torvalds#244 tc_opts_after:OK torvalds#245 tc_opts_append:OK torvalds#246 tc_opts_basic:OK torvalds#247 tc_opts_before:OK torvalds#248 tc_opts_chain_classic:OK torvalds#249 tc_opts_delete_empty:OK torvalds#250 tc_opts_demixed:OK torvalds#251 tc_opts_detach:OK torvalds#252 tc_opts_detach_after:OK torvalds#253 tc_opts_detach_before:OK torvalds#254 tc_opts_dev_cleanup:OK torvalds#255 tc_opts_invalid:OK torvalds#256 tc_opts_mixed:OK torvalds#257 tc_opts_prepend:OK torvalds#258 tc_opts_replace:OK torvalds#259 tc_opts_revision:OK Summary: 16/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add a detachment test case with miniq present to assert that with and without the miniq we get the same error. # ./test_progs -t tc_opts torvalds#244 tc_opts_after:OK torvalds#245 tc_opts_append:OK torvalds#246 tc_opts_basic:OK torvalds#247 tc_opts_before:OK torvalds#248 tc_opts_chain_classic:OK torvalds#249 tc_opts_delete_empty:OK torvalds#250 tc_opts_demixed:OK torvalds#251 tc_opts_detach:OK torvalds#252 tc_opts_detach_after:OK torvalds#253 tc_opts_detach_before:OK torvalds#254 tc_opts_dev_cleanup:OK torvalds#255 tc_opts_invalid:OK torvalds#256 tc_opts_mixed:OK torvalds#257 tc_opts_prepend:OK torvalds#258 tc_opts_replace:OK torvalds#259 tc_opts_revision:OK Summary: 16/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/20230804131112.11012-2-daniel@iogearbox.net Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

[...] torvalds#234 tc_links_after:OK torvalds#235 tc_links_append:OK torvalds#236 tc_links_basic:OK torvalds#237 tc_links_before:OK torvalds#238 tc_links_chain_classic:OK torvalds#239 tc_links_chain_mixed:OK torvalds#240 tc_links_dev_cleanup:OK torvalds#241 tc_links_ingress:OK torvalds#242 tc_links_invalid:OK torvalds#243 tc_links_prepend:OK torvalds#244 tc_links_replace:OK torvalds#245 tc_links_revision:OK torvalds#246 tc_opts_after:OK torvalds#247 tc_opts_append:OK torvalds#248 tc_opts_basic:OK torvalds#249 tc_opts_before:OK torvalds#250 tc_opts_chain_classic:OK torvalds#251 tc_opts_chain_mixed:OK torvalds#252 tc_opts_delete_empty:OK torvalds#253 tc_opts_demixed:OK torvalds#254 tc_opts_detach:OK torvalds#255 tc_opts_detach_after:OK torvalds#256 tc_opts_detach_before:OK torvalds#257 tc_opts_dev_cleanup:OK torvalds#258 tc_opts_invalid:OK torvalds#259 tc_opts_mixed:OK torvalds#260 tc_opts_prepend:OK torvalds#261 tc_opts_replace:OK torvalds#262 tc_opts_revision:OK [...] Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add several new tcx test cases to improve test coverage. This also includes a few new tests with ingress instead of clsact qdisc, to cover the fix from commit dc644b5 ("tcx: Fix splat in ingress_destroy upon tcx_entry_free"). # ./test_progs -t tc [...] torvalds#234 tc_links_after:OK torvalds#235 tc_links_append:OK torvalds#236 tc_links_basic:OK torvalds#237 tc_links_before:OK torvalds#238 tc_links_chain_classic:OK torvalds#239 tc_links_chain_mixed:OK torvalds#240 tc_links_dev_cleanup:OK torvalds#241 tc_links_dev_mixed:OK torvalds#242 tc_links_ingress:OK torvalds#243 tc_links_invalid:OK torvalds#244 tc_links_prepend:OK torvalds#245 tc_links_replace:OK torvalds#246 tc_links_revision:OK torvalds#247 tc_opts_after:OK torvalds#248 tc_opts_append:OK torvalds#249 tc_opts_basic:OK torvalds#250 tc_opts_before:OK torvalds#251 tc_opts_chain_classic:OK torvalds#252 tc_opts_chain_mixed:OK torvalds#253 tc_opts_delete_empty:OK torvalds#254 tc_opts_demixed:OK torvalds#255 tc_opts_detach:OK torvalds#256 tc_opts_detach_after:OK torvalds#257 tc_opts_detach_before:OK torvalds#258 tc_opts_dev_cleanup:OK torvalds#259 tc_opts_invalid:OK torvalds#260 tc_opts_mixed:OK torvalds#261 tc_opts_prepend:OK torvalds#262 tc_opts_replace:OK torvalds#263 tc_opts_revision:OK [...] Summary: 44/38 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Add several new tcx test cases to improve test coverage. This also includes a few new tests with ingress instead of clsact qdisc, to cover the fix from commit dc644b5 ("tcx: Fix splat in ingress_destroy upon tcx_entry_free"). # ./test_progs -t tc [...] torvalds#234 tc_links_after:OK torvalds#235 tc_links_append:OK torvalds#236 tc_links_basic:OK torvalds#237 tc_links_before:OK torvalds#238 tc_links_chain_classic:OK torvalds#239 tc_links_chain_mixed:OK torvalds#240 tc_links_dev_cleanup:OK torvalds#241 tc_links_dev_mixed:OK torvalds#242 tc_links_ingress:OK torvalds#243 tc_links_invalid:OK torvalds#244 tc_links_prepend:OK torvalds#245 tc_links_replace:OK torvalds#246 tc_links_revision:OK torvalds#247 tc_opts_after:OK torvalds#248 tc_opts_append:OK torvalds#249 tc_opts_basic:OK torvalds#250 tc_opts_before:OK torvalds#251 tc_opts_chain_classic:OK torvalds#252 tc_opts_chain_mixed:OK torvalds#253 tc_opts_delete_empty:OK torvalds#254 tc_opts_demixed:OK torvalds#255 tc_opts_detach:OK torvalds#256 tc_opts_detach_after:OK torvalds#257 tc_opts_detach_before:OK torvalds#258 tc_opts_dev_cleanup:OK torvalds#259 tc_opts_invalid:OK torvalds#260 tc_opts_mixed:OK torvalds#261 tc_opts_prepend:OK torvalds#262 tc_opts_replace:OK torvalds#263 tc_opts_revision:OK [...] Summary: 44/38 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/8699efc284b75ccdc51ddf7062fa2370330dc6c0.1692029283.git.daniel@iogearbox.net Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

Add a local kptr test with no special fields in the struct. Without the previous patch, the following warning will hit: [ 44.683877] WARNING: CPU: 3 PID: 485 at kernel/bpf/syscall.c:660 bpf_obj_free_fields+0x220/0x240 [ 44.684640] Modules linked in: bpf_testmod(OE) [ 44.685044] CPU: 3 PID: 485 Comm: kworker/u8:5 Tainted: G OE 6.5.0-rc5-01703-g260d855e9b90 torvalds#248 [ 44.685827] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [ 44.686693] Workqueue: events_unbound bpf_map_free_deferred [ 44.687297] RIP: 0010:bpf_obj_free_fields+0x220/0x240 [ 44.687775] Code: e8 55 17 1f 00 49 8b 74 24 08 4c 89 ef e8 e8 14 05 00 e8 a3 da e2 ff e9 55 fe ff ff 0f 0b e9 4e fe ff ff 0f 0b e9 47 fe ff ff <0f> 0b e8 d9 d9 e2 ff 31 f6 eb d5 48 83 c4 10 5b 41 5c e [ 44.689353] RSP: 0018:ffff888106467cb8 EFLAGS: 00010246 [ 44.689806] RAX: 0000000000000000 RBX: ffff888112b3a200 RCX: 0000000000000001 [ 44.690433] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff8881128ad988 [ 44.691094] RBP: 0000000000000002 R08: ffffffff81370bd0 R09: 1ffff110216231a5 [ 44.691643] R10: dffffc0000000000 R11: ffffed10216231a6 R12: ffff88810d68a488 [ 44.692245] R13: ffff88810767c288 R14: ffff88810d68a400 R15: ffff88810d68a418 [ 44.692829] FS: 0000000000000000(0000) GS:ffff8881f7580000(0000) knlGS:0000000000000000 [ 44.693484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.693964] CR2: 000055c7f2afce28 CR3: 000000010fee4002 CR4: 0000000000370ee0 [ 44.694513] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.695102] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.695747] Call Trace: [ 44.696001] <TASK> [ 44.696183] ? __warn+0xfe/0x270 [ 44.696447] ? bpf_obj_free_fields+0x220/0x240 [ 44.696817] ? report_bug+0x220/0x2d0 [ 44.697180] ? handle_bug+0x3d/0x70 [ 44.697507] ? exc_invalid_op+0x1a/0x50 [ 44.697887] ? asm_exc_invalid_op+0x1a/0x20 [ 44.698282] ? btf_find_struct_meta+0xd0/0xd0 [ 44.698634] ? bpf_obj_free_fields+0x220/0x240 [ 44.699027] ? bpf_obj_free_fields+0x1e2/0x240 [ 44.699414] array_map_free+0x1a3/0x260 [ 44.699763] bpf_map_free_deferred+0x7b/0xe0 [ 44.700154] process_one_work+0x46d/0x750 [ 44.700523] worker_thread+0x49e/0x900 [ 44.700892] ? pr_cont_work+0x270/0x270 [ 44.701224] kthread+0x1ae/0x1d0 [ 44.701516] ? kthread_blkcg+0x50/0x50 [ 44.701860] ret_from_fork+0x34/0x50 [ 44.702178] ? kthread_blkcg+0x50/0x50 [ 44.702508] ret_from_fork_asm+0x11/0x20 [ 44.702880] </TASK> With the previous patch, there is no warnings. Signed-off-by: Yonghong Song <yonghong.song@linux.dev>

Add a local kptr test with no special fields in the struct. Without the previous patch, the following warning will hit: [ 44.683877] WARNING: CPU: 3 PID: 485 at kernel/bpf/syscall.c:660 bpf_obj_free_fields+0x220/0x240 [ 44.684640] Modules linked in: bpf_testmod(OE) [ 44.685044] CPU: 3 PID: 485 Comm: kworker/u8:5 Tainted: G OE 6.5.0-rc5-01703-g260d855e9b90 torvalds#248 [ 44.685827] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [ 44.686693] Workqueue: events_unbound bpf_map_free_deferred [ 44.687297] RIP: 0010:bpf_obj_free_fields+0x220/0x240 [ 44.687775] Code: e8 55 17 1f 00 49 8b 74 24 08 4c 89 ef e8 e8 14 05 00 e8 a3 da e2 ff e9 55 fe ff ff 0f 0b e9 4e fe ff ff 0f 0b e9 47 fe ff ff <0f> 0b e8 d9 d9 e2 ff 31 f6 eb d5 48 83 c4 10 5b 41 5c e [ 44.689353] RSP: 0018:ffff888106467cb8 EFLAGS: 00010246 [ 44.689806] RAX: 0000000000000000 RBX: ffff888112b3a200 RCX: 0000000000000001 [ 44.690433] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff8881128ad988 [ 44.691094] RBP: 0000000000000002 R08: ffffffff81370bd0 R09: 1ffff110216231a5 [ 44.691643] R10: dffffc0000000000 R11: ffffed10216231a6 R12: ffff88810d68a488 [ 44.692245] R13: ffff88810767c288 R14: ffff88810d68a400 R15: ffff88810d68a418 [ 44.692829] FS: 0000000000000000(0000) GS:ffff8881f7580000(0000) knlGS:0000000000000000 [ 44.693484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.693964] CR2: 000055c7f2afce28 CR3: 000000010fee4002 CR4: 0000000000370ee0 [ 44.694513] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.695102] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.695747] Call Trace: [ 44.696001] <TASK> [ 44.696183] ? __warn+0xfe/0x270 [ 44.696447] ? bpf_obj_free_fields+0x220/0x240 [ 44.696817] ? report_bug+0x220/0x2d0 [ 44.697180] ? handle_bug+0x3d/0x70 [ 44.697507] ? exc_invalid_op+0x1a/0x50 [ 44.697887] ? asm_exc_invalid_op+0x1a/0x20 [ 44.698282] ? btf_find_struct_meta+0xd0/0xd0 [ 44.698634] ? bpf_obj_free_fields+0x220/0x240 [ 44.699027] ? bpf_obj_free_fields+0x1e2/0x240 [ 44.699414] array_map_free+0x1a3/0x260 [ 44.699763] bpf_map_free_deferred+0x7b/0xe0 [ 44.700154] process_one_work+0x46d/0x750 [ 44.700523] worker_thread+0x49e/0x900 [ 44.700892] ? pr_cont_work+0x270/0x270 [ 44.701224] kthread+0x1ae/0x1d0 [ 44.701516] ? kthread_blkcg+0x50/0x50 [ 44.701860] ret_from_fork+0x34/0x50 [ 44.702178] ? kthread_blkcg+0x50/0x50 [ 44.702508] ret_from_fork_asm+0x11/0x20 [ 44.702880] </TASK> With the previous patch, there is no warnings. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230824063422.203097-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>

microcai and others added 3 commits January 9, 2015 12:45

[vt] fix 255 glyph limit, prepare for CJK font support

c7bfa14

[vt] diable setfont if we have cjk font in kernel

5a8d700

[vt] add cjk font that has 65536 chars

18e073a

darcyg closed this Jan 18, 2016

laijs pushed a commit to laijs/linux that referenced this pull request Feb 13, 2017

Merge pull request torvalds#248 from M1cha/pull-fs

b371cee

lkl: make get_virtio_blkdev a public library function

otavio added a commit to OSSystems/linux that referenced this pull request Mar 30, 2021

Merge pull request torvalds#248 from zandrey/5.4.x+fslc

d920b73

Update 5.4.x+fslc to v5.4.96

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3.18 utf8 #248

3.18 utf8 #248

darcyg commented Jan 18, 2016

3.18 utf8 #248

3.18 utf8 #248

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darcyg commented Jan 18, 2016