Re: [PATCH 1/2] fs: reorganize path_openat()

From: kernel test robot
Date: Thu Apr 25 2024 - 04:13:53 EST

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In reply to: Stas Sergeev: "[PATCH 1/2] fs: reorganize path_openat()"
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Hello,

kernel test robot noticed "BUG:sleeping_function_called_from_invalid_context_at_include/linux/sched/mm.h" on:

commit: 831d3c6cc6f05873e33f4aaebafbb9c27618ea0b ("[PATCH 1/2] fs: reorganize path_openat()")
url: https://github.com/intel-lab-lkp/linux/commits/Stas-Sergeev/fs-reorganize-path_openat/20240424-185527
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git 9d1ddab261f3e2af7c384dc02238784ce0cf9f98
patch link: https://lore.kernel.org/all/20240424105248.189032-2-stsp2@xxxxxxxxx/
patch subject: [PATCH 1/2] fs: reorganize path_openat()

in testcase: boot

compiler: clang-17
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

(please refer to attached dmesg/kmsg for entire log/backtrace)

+-------------------------------------------------------------------------------+------------+------------+
| | 9d1ddab261 | 831d3c6cc6 |
+-------------------------------------------------------------------------------+------------+------------+
| boot_successes | 6 | 0 |
| boot_failures | 0 | 6 |
| BUG:sleeping_function_called_from_invalid_context_at_include/linux/sched/mm.h | 0 | 6 |
+-------------------------------------------------------------------------------+------------+------------+

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202404251525.39b4af4e-lkp@xxxxxxxxx

[ 0.591465][ T33] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:315
[ 0.592508][ T33] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 33, name: kworker/u8:2
[ 0.593515][ T33] preempt_count: 0, expected: 0
[ 0.594071][ T33] RCU nest depth: 1, expected: 0
[ 0.594633][ T33] CPU: 0 PID: 33 Comm: kworker/u8:2 Not tainted 6.9.0-rc5-00037-g831d3c6cc6f0 #1
[ 0.595637][ T33] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 0.596216][ T33] Workqueue: async async_run_entry_fn
[ 0.596216][ T33] Call Trace:
[ 0.596216][ T33] <TASK>
[ 0.596216][ T33] dump_stack_lvl (lib/dump_stack.c:116)
[ 0.596216][ T33] __might_resched (kernel/sched/core.c:10198)
[ 0.596216][ T33] kmem_cache_alloc (include/linux/kernel.h:73 include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852)
[ 0.596216][ T33] alloc_empty_file (fs/file_table.c:203)
[ 0.596216][ T33] path_openat (fs/namei.c:3796)
[ 0.596216][ T33] do_filp_open (fs/namei.c:3833)
[ 0.596216][ T33] file_open_name (fs/open.c:1352)
[ 0.596216][ T33] filp_open (fs/open.c:1371)
[ 0.596216][ T33] do_name (init/initramfs.c:373)
[ 0.596216][ T33] flush_buffer (init/initramfs.c:452 init/initramfs.c:464)
[ 0.596216][ T33] ? __pfx_flush_buffer (init/initramfs.c:458)
[ 0.596216][ T33] __gunzip (lib/decompress_inflate.c:161)
[ 0.596216][ T33] ? __pfx_nofill (lib/decompress_inflate.c:37)
[ 0.596216][ T33] unpack_to_rootfs (init/initramfs.c:520)
[ 0.596216][ T33] ? __pfx_error (init/initramfs.c:59)
[ 0.596216][ T33] do_populate_rootfs (init/initramfs.c:714)
[ 0.596216][ T33] async_run_entry_fn (kernel/async.c:136)
[ 0.596216][ T33] process_scheduled_works (kernel/workqueue.c:3259)
[ 0.596216][ T33] worker_thread (include/linux/list.h:373 kernel/workqueue.c:955 kernel/workqueue.c:3417)
[ 0.596216][ T33] ? __pfx_worker_thread (kernel/workqueue.c:3362)
[ 0.596216][ T33] kthread (kernel/kthread.c:390)
[ 0.596216][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 0.596216][ T33] ret_from_fork (arch/x86/kernel/process.c:153)
[ 0.596216][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 0.596216][ T33] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 0.596216][ T33] </TASK>
[ 1.603321][ T33] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:315
[ 1.604448][ T33] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 33, name: kworker/u8:2
[ 1.605466][ T33] preempt_count: 0, expected: 0
[ 1.606028][ T33] RCU nest depth: 1, expected: 0
[ 1.606599][ T33] CPU: 0 PID: 33 Comm: kworker/u8:2 Tainted: G W 6.9.0-rc5-00037-g831d3c6cc6f0 #1
[ 1.607761][ T33] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 1.608136][ T33] Workqueue: async async_run_entry_fn
[ 1.608136][ T33] Call Trace:
[ 1.608136][ T33] <TASK>
[ 1.608136][ T33] dump_stack_lvl (lib/dump_stack.c:116)
[ 1.608136][ T33] __might_resched (kernel/sched/core.c:10198)
[ 1.608136][ T33] kmem_cache_alloc (include/linux/kernel.h:73 include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852)
[ 1.608136][ T33] alloc_empty_file (fs/file_table.c:203)
[ 1.608136][ T33] path_openat (fs/namei.c:3796)
[ 1.608136][ T33] do_filp_open (fs/namei.c:3833)
[ 1.608136][ T33] file_open_name (fs/open.c:1352)
[ 1.608136][ T33] filp_open (fs/open.c:1371)
[ 1.608136][ T33] do_name (init/initramfs.c:373)
[ 1.608136][ T33] flush_buffer (init/initramfs.c:452 init/initramfs.c:464)
[ 1.608136][ T33] ? __pfx_flush_buffer (init/initramfs.c:458)
[ 1.608136][ T33] __gunzip (lib/decompress_inflate.c:161)
[ 1.608136][ T33] ? __pfx_nofill (lib/decompress_inflate.c:37)
[ 1.608136][ T33] unpack_to_rootfs (init/initramfs.c:520)
[ 1.608136][ T33] ? __pfx_error (init/initramfs.c:59)
[ 1.608136][ T33] do_populate_rootfs (init/initramfs.c:714)
[ 1.608136][ T33] async_run_entry_fn (kernel/async.c:136)
[ 1.608136][ T33] process_scheduled_works (kernel/workqueue.c:3259)
[ 1.608136][ T33] worker_thread (include/linux/list.h:373 kernel/workqueue.c:955 kernel/workqueue.c:3417)
[ 1.608136][ T33] ? __pfx_worker_thread (kernel/workqueue.c:3362)
[ 1.608136][ T33] kthread (kernel/kthread.c:390)
[ 1.608136][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 1.608136][ T33] ret_from_fork (arch/x86/kernel/process.c:153)
[ 1.608136][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 1.608136][ T33] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 1.608136][ T33] </TASK>
[ 2.602317][ T33] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:315
[ 2.603414][ T33] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 33, name: kworker/u8:2
[ 2.604433][ T33] preempt_count: 0, expected: 0
[ 2.604985][ T33] RCU nest depth: 1, expected: 0
[ 2.605547][ T33] CPU: 0 PID: 33 Comm: kworker/u8:2 Tainted: G W 6.9.0-rc5-00037-g831d3c6cc6f0 #1
[ 2.606689][ T33] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 2.607825][ T33] Workqueue: async async_run_entry_fn
[ 2.608140][ T33] Call Trace:
[ 2.608140][ T33] <TASK>
[ 2.608140][ T33] dump_stack_lvl (lib/dump_stack.c:116)
[ 2.608140][ T33] __might_resched (kernel/sched/core.c:10198)
[ 2.608140][ T33] kmem_cache_alloc (include/linux/kernel.h:73 include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852)
[ 2.608140][ T33] alloc_empty_file (fs/file_table.c:203)
[ 2.608140][ T33] path_openat (fs/namei.c:3796)
[ 2.608140][ T33] do_filp_open (fs/namei.c:3833)
[ 2.608140][ T33] file_open_name (fs/open.c:1352)
[ 2.608140][ T33] filp_open (fs/open.c:1371)
[ 2.608140][ T33] do_name (init/initramfs.c:373)
[ 2.608140][ T33] flush_buffer (init/initramfs.c:452 init/initramfs.c:464)
[ 2.608140][ T33] ? __pfx_flush_buffer (init/initramfs.c:458)
[ 2.608140][ T33] __gunzip (lib/decompress_inflate.c:161)
[ 2.608140][ T33] ? __pfx_nofill (lib/decompress_inflate.c:37)
[ 2.608140][ T33] unpack_to_rootfs (init/initramfs.c:520)
[ 2.608140][ T33] ? __pfx_error (init/initramfs.c:59)
[ 2.608140][ T33] do_populate_rootfs (init/initramfs.c:714)
[ 2.608140][ T33] async_run_entry_fn (kernel/async.c:136)
[ 2.608140][ T33] process_scheduled_works (kernel/workqueue.c:3259)
[ 2.608140][ T33] worker_thread (include/linux/list.h:373 kernel/workqueue.c:955 kernel/workqueue.c:3417)
[ 2.608140][ T33] ? __pfx_worker_thread (kernel/workqueue.c:3362)
[ 2.608140][ T33] kthread (kernel/kthread.c:390)
[ 2.608140][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 2.608140][ T33] ret_from_fork (arch/x86/kernel/process.c:153)
[ 2.608140][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 2.608140][ T33] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 2.608140][ T33] </TASK>
[ 3.648001][ T33] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:315
[ 3.649103][ T33] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 33, name: kworker/u8:2
[ 3.650109][ T33] preempt_count: 0, expected: 0
[ 3.650660][ T33] RCU nest depth: 1, expected: 0
[ 3.651223][ T33] CPU: 0 PID: 33 Comm: kworker/u8:2 Tainted: G W 6.9.0-rc5-00037-g831d3c6cc6f0 #1
[ 3.651979][ T33] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 3.651979][ T33] Workqueue: async async_run_entry_fn
[ 3.651979][ T33] Call Trace:
[ 3.651979][ T33] <TASK>
[ 3.651979][ T33] dump_stack_lvl (lib/dump_stack.c:116)
[ 3.651979][ T33] __might_resched (kernel/sched/core.c:10198)
[ 3.651979][ T33] kmem_cache_alloc (include/linux/kernel.h:73 include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852)
[ 3.651979][ T33] alloc_empty_file (fs/file_table.c:203)
[ 3.651979][ T33] path_openat (fs/namei.c:3796)
[ 3.651979][ T33] do_filp_open (fs/namei.c:3833)
[ 3.651979][ T33] file_open_name (fs/open.c:1352)
[ 3.651979][ T33] filp_open (fs/open.c:1371)
[ 3.651979][ T33] do_name (init/initramfs.c:373)
[ 3.651979][ T33] flush_buffer (init/initramfs.c:452 init/initramfs.c:464)
[ 3.651979][ T33] ? __pfx_flush_buffer (init/initramfs.c:458)
[ 3.651979][ T33] __gunzip (lib/decompress_inflate.c:161)
[ 3.651979][ T33] ? __pfx_nofill (lib/decompress_inflate.c:37)
[ 3.651979][ T33] unpack_to_rootfs (init/initramfs.c:520)
[ 3.651979][ T33] ? __pfx_error (init/initramfs.c:59)
[ 3.651979][ T33] do_populate_rootfs (init/initramfs.c:714)
[ 3.651979][ T33] async_run_entry_fn (kernel/async.c:136)
[ 3.651979][ T33] process_scheduled_works (kernel/workqueue.c:3259)
[ 3.651979][ T33] worker_thread (include/linux/list.h:373 kernel/workqueue.c:955 kernel/workqueue.c:3417)
[ 3.651979][ T33] ? __pfx_worker_thread (kernel/workqueue.c:3362)
[ 3.651979][ T33] kthread (kernel/kthread.c:390)
[ 3.651979][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 3.651979][ T33] ret_from_fork (arch/x86/kernel/process.c:153)
[ 3.651979][ T33] ? __pfx_kthread (kernel/kthread.c:341)
[ 3.651979][ T33] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 3.651979][ T33] </TASK>
[ 3.705833][ T33] Freeing initrd memory: 185612K

The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240425/202404251525.39b4af4e-lkp@xxxxxxxxx

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Next message: Dragos Tatulea: "Re: [RFC PATCH] net: Fix one page_pool page leak from skb_frag_unref"
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In reply to: Stas Sergeev: "[PATCH 1/2] fs: reorganize path_openat()"
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