merge for main #121

baoruxing · 2014-09-17T02:36:52Z

No description provided.

april 19 merge

April 22

Turn it into (for example): [ 0.073380] x86: Booting SMP configuration: [ 0.074005] .... node #0, CPUs: #1 #2 #3 #4 #5 torvalds#6 torvalds#7 [ 0.603005] .... node #1, CPUs: torvalds#8 torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 [ 1.200005] .... node #2, CPUs: torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23 [ 1.796005] .... node #3, CPUs: torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 [ 2.393005] .... node #4, CPUs: torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 [ 2.996005] .... node #5, CPUs: torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47 [ 3.600005] .... node torvalds#6, CPUs: torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 [ 4.202005] .... node torvalds#7, CPUs: torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 [ 4.811005] .... node torvalds#8, CPUs: torvalds#64 torvalds#65 torvalds#66 torvalds#67 torvalds#68 torvalds#69 #70 torvalds#71 [ 5.421006] .... node torvalds#9, CPUs: torvalds#72 torvalds#73 torvalds#74 torvalds#75 torvalds#76 torvalds#77 torvalds#78 torvalds#79 [ 6.032005] .... node torvalds#10, CPUs: torvalds#80 torvalds#81 torvalds#82 torvalds#83 torvalds#84 torvalds#85 torvalds#86 torvalds#87 [ 6.648006] .... node torvalds#11, CPUs: torvalds#88 torvalds#89 torvalds#90 torvalds#91 torvalds#92 torvalds#93 torvalds#94 torvalds#95 [ 7.262005] .... node torvalds#12, CPUs: torvalds#96 torvalds#97 torvalds#98 torvalds#99 torvalds#100 torvalds#101 torvalds#102 torvalds#103 [ 7.865005] .... node torvalds#13, CPUs: torvalds#104 torvalds#105 torvalds#106 torvalds#107 torvalds#108 torvalds#109 torvalds#110 torvalds#111 [ 8.466005] .... node torvalds#14, CPUs: torvalds#112 torvalds#113 torvalds#114 torvalds#115 torvalds#116 torvalds#117 torvalds#118 torvalds#119 [ 9.073006] .... node torvalds#15, CPUs: torvalds#120 torvalds#121 torvalds#122 torvalds#123 torvalds#124 torvalds#125 torvalds#126 torvalds#127 [ 9.679901] x86: Booted up 16 nodes, 128 CPUs and drop useless elements. Change num_digits() to hpa's division-avoiding, cell-phone-typed version which he went at great lengths and pains to submit on a Saturday evening. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: huawei.libin@huawei.com Cc: wangyijing@huawei.com Cc: fenghua.yu@intel.com Cc: guohanjun@huawei.com Cc: paul.gortmaker@windriver.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20130930095624.GB16383@pd.tnic Signed-off-by: Ingo Molnar <mingo@kernel.org>

…-fixes WARNING: line over 80 characters torvalds#111: FILE: arch/powerpc/kernel/elf_util_64.c:141: + pr_err("Symbol '%s' in common section.\n", name); WARNING: else is not generally useful after a break or return torvalds#121: FILE: arch/powerpc/kernel/elf_util_64.c:151: + return -ENOEXEC; + } else { WARNING: line over 80 characters torvalds#143: FILE: arch/powerpc/kernel/elf_util_64.c:174: + *(uint32_t *)location = value - (uint32_t)(uint64_t)location; WARNING: line over 80 characters torvalds#172: FILE: arch/powerpc/kernel/elf_util_64.c:249: + pr_err("%s: REL14 %li out of range!\n", obj_name, total: 0 errors, 4 warnings, 196 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. ./patches/powerpc-adapt-elf64_apply_relocate_add-for-kexec_file_load.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Rebase patches onto 4.14.5

Since dpu_crtc subclasses crtc_state, we need a custom .reset hook in order to allocate the right amount of memory to accommodate the additional struct members in dpu_crtc_state. So bring it [partially] back. Relevant KASAN splat: [ 10.333382] ================================================================== [ 10.344288] BUG: KASAN: slab-out-of-bounds in kmemdup+0x50/0x80 [ 10.350390] Read of size 736 at addr ffffffc0d9f06080 by task frecon/394 [ 10.358861] CPU: 6 PID: 394 Comm: frecon Tainted: G W 4.19.4 torvalds#121 [ 10.366476] Hardware name: Google Cheza (rev2) (DT) [ 10.371514] Call trace: [ 10.374087] dump_backtrace+0x0/0x194 [ 10.377878] show_stack+0x20/0x28 [ 10.381330] dump_stack+0xa0/0xc8 [ 10.384783] print_address_description+0x78/0x2e0 [ 10.389639] kasan_report+0x290/0x2d0 [ 10.393428] check_memory_region+0x20/0x14c [ 10.397740] __asan_loadN+0x14/0x1c [ 10.401345] kmemdup+0x50/0x80 [ 10.404524] dpu_crtc_duplicate_state+0x58/0xa0 [ 10.409228] drm_atomic_get_crtc_state+0xac/0x178 [ 10.414095] __drm_atomic_helper_set_config+0x54/0x4a4 [ 10.419393] drm_atomic_helper_set_config+0x60/0xb4 [ 10.424435] drm_mode_setcrtc+0x720/0x760 [ 10.428570] drm_ioctl_kernel+0xd8/0x13c [ 10.432617] drm_ioctl+0x380/0x4f4 [ 10.436150] drm_compat_ioctl+0x54/0x13c [ 10.440219] __arm64_compat_sys_ioctl+0x1d8/0xef4 [ 10.445086] el0_svc_common+0xd8/0x138 [ 10.448961] el0_svc_compat_handler+0x58/0x68 [ 10.453463] el0_svc_compat+0x8/0x18 [ 10.458712] Allocated by task 56: [ 10.462148] kasan_kmalloc.part.4+0x48/0xf4 [ 10.466465] kasan_kmalloc+0x8c/0xa0 [ 10.470165] kmem_cache_alloc_trace+0x25c/0x27c [ 10.474848] drm_atomic_helper_crtc_reset+0x68/0x98 [ 10.479877] drm_mode_config_reset+0xc4/0x19c [ 10.484383] msm_drm_bind+0x814/0x8dc [ 10.488169] try_to_bring_up_master.part.7+0x48/0xac [ 10.493282] component_master_add_with_match+0x158/0x198 [ 10.498758] msm_pdev_probe+0x328/0x348 [ 10.502736] platform_drv_probe+0x74/0xc8 [ 10.506877] really_probe+0x1ac/0x35c [ 10.510659] driver_probe_device+0xd4/0x118 [ 10.514975] __device_attach_driver+0xc8/0xf4 [ 10.519477] bus_for_each_drv+0xb4/0xe4 [ 10.523439] __device_attach+0xd0/0x158 [ 10.527394] device_initial_probe+0x24/0x30 [ 10.531715] bus_probe_device+0x50/0xe4 [ 10.535681] deferred_probe_work_func+0xac/0xdc [ 10.540376] process_one_work+0x3f0/0x6d4 [ 10.544521] worker_thread+0x3f4/0x520 [ 10.548399] kthread+0x1b4/0x1c8 [ 10.551740] ret_from_fork+0x10/0x18 [ 10.556986] Freed by task 0: [ 10.559967] (stack is not available) [ 10.565216] The buggy address belongs to the object at ffffffc0d9f06080 which belongs to the cache kmalloc-1024 of size 1024 [ 10.578268] The buggy address is located 0 bytes inside of 1024-byte region [ffffffc0d9f06080, ffffffc0d9f06480) [ 10.590248] The buggy address belongs to the page: [ 10.595195] page:ffffffbf0367c000 count:1 mapcount:0 mapping:ffffffc0de40f680 index:0x0 compound_mapcount: 0 [ 10.605321] flags: 0x4000000000008100(slab|head) [ 10.610100] raw: 4000000000008100 ffffffbf0369fa08 ffffffbf0367f008 ffffffc0de40f680 [ 10.618077] raw: 0000000000000000 0000000000150015 00000001ffffffff 0000000000000000 [ 10.626049] page dumped because: kasan: bad access detected [ 10.633341] Memory state around the buggy address: [ 10.638282] ffffffc0d9f06180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 10.645710] ffffffc0d9f06200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 10.653139] >ffffffc0d9f06280: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc [ 10.660571] ^ [ 10.665774] ffffffc0d9f06300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.673210] ffffffc0d9f06380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.680639] ================================================================== Fixes: a6ba45a (drm/msm/dpu: Replace dpu_crtc_reset by atomic helper) Cc: Sean Paul <seanpaul@chromium.org> Cc: Bruce Wang <bzwang@chromium.org> Cc: Rob Clark <robdclark@gmail.com> Reviewed-by: Bruce Wang <bzwang@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Rob Clark <robdclark@gmail.com>

Fix checkpatch errors: ERROR: else should follow close brace '}' torvalds#121: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c:121: + } + else WARNING: line over 80 characters torvalds#150: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c:150: + pinfo->tx_fifosize), (void __force *)pinfo->mem_addr, WARNING: Block comments should align the * on each line torvalds#66: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:66: + * Check, if transmit buffers are processed +*/ WARNING: braces {} are not necessary for any arm of this statement torvalds#170: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:170: + if (IS_SMC(pinfo)) { [...] + } else { [...] WARNING: labels should not be indented torvalds#292: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:292: + error_return: ERROR: code indent should use tabs where possible torvalds#299: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:299: +^I^I BD_SC_OV | BD_SC_ID);$ WARNING: labels should not be indented torvalds#319: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:319: + handle_error: WARNING: line over 80 characters torvalds#423: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:423: + setbits32(&pinfo->sccp->scc_gsmrl, (SCC_GSMRL_ENR | SCC_GSMRL_ENT)); ERROR: space required before the open parenthesis '(' torvalds#451: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:451: + while(!cpm_uart_tx_empty(port)) { WARNING: Missing a blank line after declarations torvalds#462: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:462: + smc_t __iomem *smcp = pinfo->smcp; + clrbits16(&smcp->smc_smcmr, SMCMR_REN | SMCMR_TEN); WARNING: line over 80 characters torvalds#466: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:466: + clrbits32(&sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); WARNING: Missing a blank line after declarations torvalds#466: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:466: + scc_t __iomem *sccp = pinfo->sccp; + clrbits32(&sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); ERROR: code indent should use tabs where possible torvalds#484: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:484: + struct ktermios *termios,$ WARNING: please, no spaces at the start of a line torvalds#484: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:484: + struct ktermios *termios,$ ERROR: code indent should use tabs where possible torvalds#485: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:485: + struct ktermios *old)$ WARNING: please, no spaces at the start of a line torvalds#485: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:485: + struct ktermios *old)$ WARNING: line over 80 characters torvalds#624: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:624: + /* Output in *one* operation, so we don't interrupt RX/TX if they WARNING: Block comments use a trailing */ on a separate line torvalds#625: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:625: + * were already enabled. */ WARNING: line over 80 characters torvalds#629: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:629: + out_be16(&pinfo->sccup->scc_genscc.scc_mrblr, pinfo->rx_fifosize); WARNING: line over 80 characters torvalds#773: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:773: + mem_addr = pinfo->mem_addr + L1_CACHE_ALIGN(pinfo->rx_nrfifos * pinfo->rx_fifosize); ERROR: code indent should use tabs where possible torvalds#797: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:797: +^I (u8 __iomem *)pinfo->rx_bd_base - DPRAM_BASE);$ ERROR: code indent should use tabs where possible torvalds#799: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:799: +^I (u8 __iomem *)pinfo->tx_bd_base - DPRAM_BASE);$ ERROR: code indent should use tabs where possible torvalds#836: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:836: +^I SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);$ ERROR: code indent should use tabs where possible torvalds#859: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:859: +^I (u8 __iomem *)pinfo->rx_bd_base - DPRAM_BASE);$ ERROR: code indent should use tabs where possible torvalds#861: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:861: +^I (u8 __iomem *)pinfo->tx_bd_base - DPRAM_BASE);$ WARNING: space prohibited between function name and open parenthesis '(' torvalds#866: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:866: +#if defined (CONFIG_I2C_SPI_SMC1_UCODE_PATCH) WARNING: line over 80 characters torvalds#921: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:921: + clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); WARNING: Missing a blank line after declarations torvalds#462: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:462: + smc_t __iomem *smcp = pinfo->smcp; + clrbits16(&smcp->smc_smcmr, WARNING: Missing a blank line after declarations torvalds#467: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:467: + scc_t __iomem *sccp = pinfo->sccp; + clrbits32(&sccp->scc_gsmrl, ERROR: code indent should use tabs where possible #1151: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1151: + struct uart_cpm_port *pinfo)$ WARNING: please, no spaces at the start of a line #1151: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1151: + struct uart_cpm_port *pinfo)$ ERROR: "(foo*)" should be "(foo *)" #1161: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1161: + struct clk *clk = clk_get(NULL, (const char*)data); WARNING: Missing a blank line after declarations #1162: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1162: + struct clk *clk = clk_get(NULL, (const char*)data); + if (!IS_ERR(clk)) ERROR: code indent should use tabs where possible #1169: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1169: +^I^I^I "fsl,cpm-brg property.\n", np);$ ERROR: code indent should use tabs where possible #1178: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1178: +^I^I "fsl,cpm-command property.\n", np);$ ERROR: code indent should use tabs where possible #1192: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1192: WARNING: braces {} are not necessary for any arm of this statement #1279: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1279: + if (unlikely(nolock)) { [...] + } else { [...] WARNING: braces {} are not necessary for any arm of this statement #1287: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1287: + if (unlikely(nolock)) { [...] + } else { [...] WARNING: line over 80 characters #1354: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1354: + clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); ERROR: Macros with complex values should be enclosed in parentheses #1394: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1394: +#define CPM_UART_CONSOLE &cpm_scc_uart_console WARNING: Missing a blank line after declarations #1437: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1437: + struct uart_cpm_port *pinfo = platform_get_drvdata(ofdev); + return uart_remove_one_port(&cpm_reg, &pinfo->port); WARNING: please, no spaces at the start of a line #1464: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1464: + };$ WARNING: Missing a blank line after declarations #1469: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1469: + int ret = uart_register_driver(&cpm_reg); + if (ret) WARNING: Missing a blank line after declarations torvalds#1062: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1062: + int i; + volatile cbd_t *bdp; ERROR: "foo * bar" should be "foo *bar" torvalds#19: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm1.h:19: +static inline void cpm_set_scc_fcr(scc_uart_t __iomem * sup) ERROR: "foo * bar" should be "foo *bar" torvalds#25: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm1.h:25: +static inline void cpm_set_smc_fcr(smc_uart_t __iomem * up) WARNING: Improper SPDX comment style for 'drivers/tty/serial/cpm_uart/cpm_uart.h', please use '/*' instead #1: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:1: +// SPDX-License-Identifier: GPL-2.0 WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 #1: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:1: +// SPDX-License-Identifier: GPL-2.0 WARNING: Block comments use * on subsequent lines torvalds#106: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:106: +/* + virtual to phys transtalion ERROR: code indent should use tabs where possible torvalds#109: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:109: + struct uart_cpm_port *pinfo)$ WARNING: please, no spaces at the start of a line torvalds#109: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:109: + struct uart_cpm_port *pinfo)$ ERROR: code indent should use tabs where possible torvalds#125: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:125: + struct uart_cpm_port *pinfo)$ WARNING: please, no spaces at the start of a line torvalds#125: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:125: + struct uart_cpm_port *pinfo)$ Signed-off-by: Enrico Weigelt <info@metux.net>

When we get into activate_mm(), lockdep complains that we're doing something strange: WARNING: possible circular locking dependency detected 5.1.0-10252-gb00152307319-dirty torvalds#121 Not tainted ------------------------------------------------------ inside.sh/366 is trying to acquire lock: (____ptrval____) (&(&p->alloc_lock)->rlock){+.+.}, at: flush_old_exec+0x703/0x8d7 but task is already holding lock: (____ptrval____) (&mm->mmap_sem){++++}, at: flush_old_exec+0x6c5/0x8d7 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&mm->mmap_sem){++++}: [...] __lock_acquire+0x12ab/0x139f lock_acquire+0x155/0x18e down_write+0x3f/0x98 flush_old_exec+0x748/0x8d7 load_elf_binary+0x2ca/0xddb [...] -> #0 (&(&p->alloc_lock)->rlock){+.+.}: [...] __lock_acquire+0x12ab/0x139f lock_acquire+0x155/0x18e _raw_spin_lock+0x30/0x83 flush_old_exec+0x703/0x8d7 load_elf_binary+0x2ca/0xddb [...] other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_sem); lock(&(&p->alloc_lock)->rlock); lock(&mm->mmap_sem); lock(&(&p->alloc_lock)->rlock); *** DEADLOCK *** 2 locks held by inside.sh/366: #0: (____ptrval____) (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file+0x12d/0x869 #1: (____ptrval____) (&mm->mmap_sem){++++}, at: flush_old_exec+0x6c5/0x8d7 stack backtrace: CPU: 0 PID: 366 Comm: inside.sh Not tainted 5.1.0-10252-gb00152307319-dirty torvalds#121 Stack: [...] Call Trace: [<600420de>] show_stack+0x13b/0x155 [<6048906b>] dump_stack+0x2a/0x2c [<6009ae64>] print_circular_bug+0x332/0x343 [<6009c5c6>] check_prev_add+0x669/0xdad [<600a06b4>] __lock_acquire+0x12ab/0x139f [<6009f3d0>] lock_acquire+0x155/0x18e [<604a07e0>] _raw_spin_lock+0x30/0x83 [<60151e6a>] flush_old_exec+0x703/0x8d7 [<601a8eb8>] load_elf_binary+0x2ca/0xddb [...] I think it's because in exec_mmap() we have down_read(&old_mm->mmap_sem); ... task_lock(tsk); ... activate_mm(active_mm, mm); (which does down_write(&mm->mmap_sem)) I'm not really sure why lockdep throws in the whole knowledge about the task lock, but it seems that old_mm and mm shouldn't ever be the same (and it doesn't deadlock) so tell lockdep that they're different. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>

Fix checkpatch errors: ERROR: else should follow close brace '}' torvalds#121: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c:121: + } + else WARNING: line over 80 characters torvalds#150: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c:150: + pinfo->tx_fifosize), (void __force *)pinfo->mem_addr, WARNING: Block comments should align the * on each line torvalds#66: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:66: + * Check, if transmit buffers are processed +*/ WARNING: braces {} are not necessary for any arm of this statement torvalds#170: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:170: + if (IS_SMC(pinfo)) { [...] + } else { [...] WARNING: labels should not be indented torvalds#292: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:292: + error_return: ERROR: code indent should use tabs where possible torvalds#299: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:299: +^I^I BD_SC_OV | BD_SC_ID);$ WARNING: labels should not be indented torvalds#319: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:319: + handle_error: WARNING: line over 80 characters torvalds#423: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:423: + setbits32(&pinfo->sccp->scc_gsmrl, (SCC_GSMRL_ENR | SCC_GSMRL_ENT)); ERROR: space required before the open parenthesis '(' torvalds#451: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:451: + while(!cpm_uart_tx_empty(port)) { WARNING: Missing a blank line after declarations torvalds#462: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:462: + smc_t __iomem *smcp = pinfo->smcp; + clrbits16(&smcp->smc_smcmr, SMCMR_REN | SMCMR_TEN); WARNING: line over 80 characters torvalds#466: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:466: + clrbits32(&sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); WARNING: Missing a blank line after declarations torvalds#466: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:466: + scc_t __iomem *sccp = pinfo->sccp; + clrbits32(&sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); ERROR: code indent should use tabs where possible torvalds#484: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:484: + struct ktermios *termios,$ WARNING: please, no spaces at the start of a line torvalds#484: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:484: + struct ktermios *termios,$ ERROR: code indent should use tabs where possible torvalds#485: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:485: + struct ktermios *old)$ WARNING: please, no spaces at the start of a line torvalds#485: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:485: + struct ktermios *old)$ WARNING: line over 80 characters torvalds#624: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:624: + /* Output in *one* operation, so we don't interrupt RX/TX if they WARNING: Block comments use a trailing */ on a separate line torvalds#625: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:625: + * were already enabled. */ WARNING: line over 80 characters torvalds#629: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:629: + out_be16(&pinfo->sccup->scc_genscc.scc_mrblr, pinfo->rx_fifosize); WARNING: line over 80 characters torvalds#773: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:773: + mem_addr = pinfo->mem_addr + L1_CACHE_ALIGN(pinfo->rx_nrfifos * pinfo->rx_fifosize); ERROR: code indent should use tabs where possible torvalds#797: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:797: +^I (u8 __iomem *)pinfo->rx_bd_base - DPRAM_BASE);$ ERROR: code indent should use tabs where possible torvalds#799: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:799: +^I (u8 __iomem *)pinfo->tx_bd_base - DPRAM_BASE);$ ERROR: code indent should use tabs where possible torvalds#836: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:836: +^I SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);$ ERROR: code indent should use tabs where possible torvalds#859: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:859: +^I (u8 __iomem *)pinfo->rx_bd_base - DPRAM_BASE);$ ERROR: code indent should use tabs where possible torvalds#861: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:861: +^I (u8 __iomem *)pinfo->tx_bd_base - DPRAM_BASE);$ WARNING: space prohibited between function name and open parenthesis '(' torvalds#866: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:866: +#if defined (CONFIG_I2C_SPI_SMC1_UCODE_PATCH) WARNING: line over 80 characters torvalds#921: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:921: + clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); WARNING: Missing a blank line after declarations torvalds#462: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:462: + smc_t __iomem *smcp = pinfo->smcp; + clrbits16(&smcp->smc_smcmr, WARNING: Missing a blank line after declarations torvalds#467: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:467: + scc_t __iomem *sccp = pinfo->sccp; + clrbits32(&sccp->scc_gsmrl, ERROR: code indent should use tabs where possible #1151: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1151: + struct uart_cpm_port *pinfo)$ WARNING: please, no spaces at the start of a line #1151: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1151: + struct uart_cpm_port *pinfo)$ ERROR: "(foo*)" should be "(foo *)" #1161: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1161: + struct clk *clk = clk_get(NULL, (const char*)data); WARNING: Missing a blank line after declarations #1162: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1162: + struct clk *clk = clk_get(NULL, (const char*)data); + if (!IS_ERR(clk)) ERROR: code indent should use tabs where possible #1169: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1169: +^I^I^I "fsl,cpm-brg property.\n", np);$ ERROR: code indent should use tabs where possible #1178: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1178: +^I^I "fsl,cpm-command property.\n", np);$ ERROR: code indent should use tabs where possible #1192: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1192: WARNING: braces {} are not necessary for any arm of this statement #1279: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1279: + if (unlikely(nolock)) { [...] + } else { [...] WARNING: braces {} are not necessary for any arm of this statement #1287: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1287: + if (unlikely(nolock)) { [...] + } else { [...] WARNING: line over 80 characters #1354: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1354: + clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); ERROR: Macros with complex values should be enclosed in parentheses #1394: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1394: +#define CPM_UART_CONSOLE &cpm_scc_uart_console WARNING: Missing a blank line after declarations #1437: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1437: + struct uart_cpm_port *pinfo = platform_get_drvdata(ofdev); + return uart_remove_one_port(&cpm_reg, &pinfo->port); WARNING: please, no spaces at the start of a line #1464: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1464: + };$ WARNING: Missing a blank line after declarations #1469: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1469: + int ret = uart_register_driver(&cpm_reg); + if (ret) WARNING: Missing a blank line after declarations torvalds#1062: FILE: drivers/tty/serial/cpm_uart/cpm_uart_core.c:1062: + int i; + volatile cbd_t *bdp; ERROR: "foo * bar" should be "foo *bar" torvalds#19: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm1.h:19: +static inline void cpm_set_scc_fcr(scc_uart_t __iomem * sup) ERROR: "foo * bar" should be "foo *bar" torvalds#25: FILE: drivers/tty/serial/cpm_uart/cpm_uart_cpm1.h:25: +static inline void cpm_set_smc_fcr(smc_uart_t __iomem * up) WARNING: Improper SPDX comment style for 'drivers/tty/serial/cpm_uart/cpm_uart.h', please use '/*' instead #1: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:1: +// SPDX-License-Identifier: GPL-2.0 WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 #1: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:1: +// SPDX-License-Identifier: GPL-2.0 WARNING: Block comments use * on subsequent lines torvalds#106: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:106: +/* + virtual to phys transtalion ERROR: code indent should use tabs where possible torvalds#109: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:109: + struct uart_cpm_port *pinfo)$ WARNING: please, no spaces at the start of a line torvalds#109: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:109: + struct uart_cpm_port *pinfo)$ ERROR: code indent should use tabs where possible torvalds#125: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:125: + struct uart_cpm_port *pinfo)$ WARNING: please, no spaces at the start of a line torvalds#125: FILE: drivers/tty/serial/cpm_uart/cpm_uart.h:125: + struct uart_cpm_port *pinfo)$ Signed-off-by: Enrico Weigelt <info@metux.net>

[ Upstream commit 80bf6ce ] When we get into activate_mm(), lockdep complains that we're doing something strange: WARNING: possible circular locking dependency detected 5.1.0-10252-gb00152307319-dirty torvalds#121 Not tainted ------------------------------------------------------ inside.sh/366 is trying to acquire lock: (____ptrval____) (&(&p->alloc_lock)->rlock){+.+.}, at: flush_old_exec+0x703/0x8d7 but task is already holding lock: (____ptrval____) (&mm->mmap_sem){++++}, at: flush_old_exec+0x6c5/0x8d7 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&mm->mmap_sem){++++}: [...] __lock_acquire+0x12ab/0x139f lock_acquire+0x155/0x18e down_write+0x3f/0x98 flush_old_exec+0x748/0x8d7 load_elf_binary+0x2ca/0xddb [...] -> #0 (&(&p->alloc_lock)->rlock){+.+.}: [...] __lock_acquire+0x12ab/0x139f lock_acquire+0x155/0x18e _raw_spin_lock+0x30/0x83 flush_old_exec+0x703/0x8d7 load_elf_binary+0x2ca/0xddb [...] other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_sem); lock(&(&p->alloc_lock)->rlock); lock(&mm->mmap_sem); lock(&(&p->alloc_lock)->rlock); *** DEADLOCK *** 2 locks held by inside.sh/366: #0: (____ptrval____) (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file+0x12d/0x869 #1: (____ptrval____) (&mm->mmap_sem){++++}, at: flush_old_exec+0x6c5/0x8d7 stack backtrace: CPU: 0 PID: 366 Comm: inside.sh Not tainted 5.1.0-10252-gb00152307319-dirty torvalds#121 Stack: [...] Call Trace: [<600420de>] show_stack+0x13b/0x155 [<6048906b>] dump_stack+0x2a/0x2c [<6009ae64>] print_circular_bug+0x332/0x343 [<6009c5c6>] check_prev_add+0x669/0xdad [<600a06b4>] __lock_acquire+0x12ab/0x139f [<6009f3d0>] lock_acquire+0x155/0x18e [<604a07e0>] _raw_spin_lock+0x30/0x83 [<60151e6a>] flush_old_exec+0x703/0x8d7 [<601a8eb8>] load_elf_binary+0x2ca/0xddb [...] I think it's because in exec_mmap() we have down_read(&old_mm->mmap_sem); ... task_lock(tsk); ... activate_mm(active_mm, mm); (which does down_write(&mm->mmap_sem)) I'm not really sure why lockdep throws in the whole knowledge about the task lock, but it seems that old_mm and mm shouldn't ever be the same (and it doesn't deadlock) so tell lockdep that they're different. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Sasha Levin <sashal@kernel.org>

Like commit 1cf3bfc ("bpf: Support 64-bit pointers to kfuncs") for s390x, add support for 64-bit pointers to kfuncs for LoongArch. Since the infrastructure is already implemented in BPF core, the only thing need to be done is to override bpf_jit_supports_far_kfunc_call(). Before this change, several test_verifier tests failed: # ./test_verifier | grep # | grep FAIL torvalds#119/p calls: invalid kfunc call: ptr_to_mem to struct with non-scalar FAIL torvalds#120/p calls: invalid kfunc call: ptr_to_mem to struct with nesting depth > 4 FAIL torvalds#121/p calls: invalid kfunc call: ptr_to_mem to struct with FAM FAIL torvalds#122/p calls: invalid kfunc call: reg->type != PTR_TO_CTX FAIL torvalds#123/p calls: invalid kfunc call: void * not allowed in func proto without mem size arg FAIL torvalds#124/p calls: trigger reg2btf_ids[reg->type] for reg->type > __BPF_REG_TYPE_MAX FAIL torvalds#125/p calls: invalid kfunc call: reg->off must be zero when passed to release kfunc FAIL torvalds#126/p calls: invalid kfunc call: don't match first member type when passed to release kfunc FAIL torvalds#127/p calls: invalid kfunc call: PTR_TO_BTF_ID with negative offset FAIL torvalds#128/p calls: invalid kfunc call: PTR_TO_BTF_ID with variable offset FAIL torvalds#129/p calls: invalid kfunc call: referenced arg needs refcounted PTR_TO_BTF_ID FAIL torvalds#130/p calls: valid kfunc call: referenced arg needs refcounted PTR_TO_BTF_ID FAIL torvalds#486/p map_kptr: ref: reference state created and released on xchg FAIL This is because the kfuncs in the loaded module are far away from __bpf_call_base: ffff800002009440 t bpf_kfunc_call_test_fail1 [bpf_testmod] 9000000002e128d8 T __bpf_call_base The offset relative to __bpf_call_base does NOT fit in s32, which breaks the assumption in BPF core. Enable bpf_jit_supports_far_kfunc_call() lifts this limit. Note that to reproduce the above result, tools/testing/selftests/bpf/config should be applied, and run the test with JIT enabled, unpriv BPF enabled. With this change, the test_verifier tests now all passed: # ./test_verifier ... Summary: 777 PASSED, 0 SKIPPED, 0 FAILED Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

In get_imit_enries() pkt_dev->n_imix_entries = MAX_IMIX_ENTRIES leads to oob for pkt_dev->imix_entries array. ``` UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imix_pkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 torvalds#121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 RIP: 0033:0x7f148408b240 ``` Fixes: 52a62f8 ("pktgen: Parse internet mix (imix) input") Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Artem Chernyshev <artem.chernyshev@red-soft.ru>

In get_imit_enries() pkt_dev->n_imix_entries = MAX_IMIX_ENTRIES leads to oob for pkt_dev->imix_entries array. ``` UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imix_pkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 torvalds#121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 RIP: 0033:0x7f148408b240 ``` Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 52a62f8 ("pktgen: Parse internet mix (imix) input") Signed-off-by: Artem Chernyshev <artem.chernyshev@red-soft.ru>

In get_imit_enries() pkt_dev->n_imix_entries = MAX_IMIX_ENTRIES leads to oob for pkt_dev->imix_entries array. ``` UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imix_pkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 torvalds#121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 RIP: 0033:0x7f148408b240 ``` Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 52a62f8 ("pktgen: Parse internet mix (imix) input") Signed-off-by: Artem Chernyshev <artem.chernyshev@red-soft.ru> Signed-off-by: NipaLocal <nipa@local>

baoruxing added 2 commits April 19, 2013 08:18

Merge pull request #1 from torvalds/master

374b90d

april 19 merge

Merge pull request #2 from torvalds/master

c82ab37

April 22

baoruxing closed this Sep 17, 2014

iaguis pushed a commit to kinvolk/linux that referenced this pull request Feb 6, 2018

Merge pull request torvalds#121 from coreosbot/v4.14.5-coreos

578c378

Rebase patches onto 4.14.5

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merge for main #121

merge for main #121

baoruxing commented Sep 17, 2014

merge for main #121

merge for main #121

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baoruxing commented Sep 17, 2014