On Thu, 9 Mar 2023 at 23:20, Andy Shevchenko andriy.shevchenko@linux.intel.com wrote:
On Thu, Mar 09, 2023 at 09:33:29PM +0530, Naresh Kamboju wrote:
Following kernel warnings and crash notices on arm64 Rpi4 device while running selftests: gpio on Linux mainline 6.3.0-rc1 kernel and Linux next.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
...
[ 61.177432] *** DEADLOCK *** [ 61.177432] [ 61.177434] 3 locks held by modprobe/510: [ 61.177436] #0: ffff000040000698 (&n->list_lock){-.-.}-{2:2}, at: get_partial_node.part.0 (mm/slub.c:2271) [ 61.177448] #1: ffff80000b227f18 (console_lock){+.+.}-{0:0}, at: vprintk_emit (kernel/printk/printk.c:1936 kernel/printk/printk.c:2315) [ 61.177460] #2: ffff80000b228388 (console_srcu){....}-{0:0}, at: console_flush_all (include/linux/srcu.h:200 kernel/printk/printk.c:290 kernel/printk/printk.c:2934)
How is it related to the GPIO? Can you bisect if it's a regression somewhere?
The following crash on Linux mainline and next was noticed while running selftest gpio on arm64. And this is a kselftest-merge config build. Which means it has a large set of test configs enabled.
Anders performed bisection on this problem. The bisection have been poing to this commit log, first bad commit: [24c94060fc9b4e0f19e6e018869db46db21d6bc7] gpiolib: ensure that fwnode is properly set
Reported-by: Linux Kernel Functional Testing lkft@linaro.org Reported-by: Anders Roxell anders.roxell@linaro.org
Crash log: # 2. Module load error tests # 2.1 gpio overflow [ 88.796755] ============================================================================= [ 88.806704] BUG kmalloc-512 (Not tainted): Poison overwritten [ 88.812482] ----------------------------------------------------------------------------- [ 88.812482] [ 88.822170] 0xe38-0xe47 @offset=28216. First byte 0x6a instead of 0x6b [ 88.830994] Allocated in swnode_register+0x40/0x218 age=828 cpu=2 pid=565 [ 88.837830] __kmem_cache_alloc_node+0x11c/0x320 [ 88.842480] kmalloc_trace+0x54/0xa8 [ 88.846083] swnode_register+0x40/0x218 [ 88.849947] fwnode_create_software_node+0xcc/0x1a0 [ 88.854856] 0xffff8000018c71cc [ 88.858029] 0xffff8000018c73b0 [ 88.861197] do_one_initcall+0x80/0x320 [ 88.865062] do_init_module+0x50/0x210 [ 88.868843] load_module+0x201c/0x2260 [ 88.872622] __do_sys_finit_module+0xb0/0x138 [ 88.877010] __arm64_sys_finit_module+0x2c/0x48 [ 88.881572] invoke_syscall+0x8c/0x120 [ 88.885352] el0_svc_common.constprop.0+0x104/0x130 [ 88.890263] do_el0_svc+0x44/0xb8 [ 88.893606] el0_svc+0x48/0xb8 [ 88.896686] el0t_64_sync_handler+0xbc/0x138 [ 88.900984] Freed in software_node_release+0xdc/0x108 age=34 cpu=1 pid=683 [ 88.907899] __kmem_cache_free+0x2a4/0x2e0 [ 88.912024] kfree+0xc0/0x1a0 [ 88.915015] software_node_release+0xdc/0x108 [ 88.919402] kobject_put+0xb0/0x220 [ 88.922919] software_node_notify_remove+0x98/0xe8 [ 88.927741] device_del+0x184/0x380 [ 88.931259] platform_device_del.part.0+0x24/0xa8 [ 88.935995] platform_device_unregister+0x30/0x50 [ 88.940730] 0xffff8000018a1dd4 [ 88.943898] __arm64_sys_delete_module+0x184/0x328 [ 88.948722] invoke_syscall+0x8c/0x120 [ 88.952502] el0_svc_common.constprop.0+0x104/0x130 [ 88.957413] do_el0_svc+0x44/0xb8 [ 88.960757] el0_svc+0x48/0xb8 [ 88.963834] el0t_64_sync_handler+0xbc/0x138 [ 88.968132] el0t_64_sync+0x190/0x198 [ 88.971820] Slab 0xfffffc00209d0800 objects=21 used=7 fp=0xffff000827423200 flags=0xbfffc0000010200(slab|head|node=0|zone=2|lastcpupid=0xffff) [ 88.984653] Object 0xe00 @offset=28160 fp=0xffff000827423200 [ 88.984653] [ 88.992953] Redzone <Trim> [ 89.002470] Redzone <Trim> [ 89.011986] Redzone <Trim> ... [ 89.278435] Redzone <Trim> [ 89.287951] Redzone <Trim> [ 89.297468] Object <Trim> [ 89.306984] Object <Trim> [ 89.316500] Object <Trim> ... [ 89.592465] Object [ 89.601981] Redzone [ 89.610801] Padding [ 89.620317] Padding
Details test and crash log: - https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.3-rc6/test... - https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.3-rc6/test... - https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.3-rc6/test...
metadata: git_ref: master git_repo: https://gitlab.com/Linaro/lkft/mirrors/torvalds/linux-mainline git_sha: 09a9639e56c01c7a00d6c0ca63f4c7c41abe075d git_describe: v6.3-rc6 kernel_version: 6.3.0-rc6 kernel-config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2OCXLSEmqxrg13KKFGzyp... build-url: https://gitlab.com/Linaro/lkft/mirrors/torvalds/linux-mainline/-/pipelines/8... artifact-location: https://storage.tuxsuite.com/public/linaro/lkft/builds/2OCXLSEmqxrg13KKFGzyp... toolchain: gcc-11 email-notification: '' build_name: gcc-11-lkftconfig-kselftest
-- Linaro LKFT https://lkft.linaro.org
-- With Best Regards, Andy Shevchenko