INFO: task syz-executor:5819 blocked for more than 143 seconds.
Tainted: G U W L XTNJ syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:23608 pid:5819 tgid:5819 ppid:5818 task_flags:0x440100 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
io_schedule+0xbf/0x130 kernel/sched/core.c:7789
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:250
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xd9/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x910/0x12f0 fs/jbd2/transaction.c:1092
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1242
__ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:241
ext4_reserve_inode_write+0x1be/0x340 fs/ext4/inode.c:6290
__ext4_mark_inode_dirty+0x197/0x840 fs/ext4/inode.c:6465
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6502
__mark_inode_dirty+0x1f7/0x1670 fs/fs-writeback.c:2587
generic_update_time+0xcf/0xf0 fs/inode.c:2155
inode_update_time fs/inode.c:2168 [inline]
file_update_time_flags+0x410/0x520 fs/inode.c:2395
ext4_page_mkwrite+0x33d/0x1880 fs/ext4/inode.c:6668
do_page_mkwrite+0x174/0x380 mm/memory.c:3528
wp_page_shared mm/memory.c:3929 [inline]
do_wp_page+0xb5d/0x5010 mm/memory.c:4148
handle_pte_fault mm/memory.c:6289 [inline]
__handle_mm_fault+0x1bd2/0x2bb0 mm/memory.c:6411
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6580
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x64/0xc0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fe6f6476491
RSP: 002b:00007ffcf10c4b50 EFLAGS: 00010202
RAX: 000000000000011a RBX: 00007ffcf10c5050 RCX: 000000000000011b
RDX: ffffffff84ac1085 RSI: 000055558b913c80 RDI: 00007fe6f4400000
RBP: 000055558b91c4a0 R08: 000055558b913c88 R09: 000000000000005a
R10: 00007fe6f6400000 R11: 00007fe6f67bacc0 R12: 00007ffcf10c4ea0
R13: 00007ffcf10c4c90 R14: 00007ffcf10c4f20 R15: 00007ffcf10c4bb0
INFO: task kworker/u10:14:6045 blocked for more than 143 seconds.
Tainted: G U W L XTNJ syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:14 state:D stack:23544 pid:6045 tgid:6045 ppid:2 task_flags:0x4248060 flags:0x00080000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
io_schedule+0xbf/0x130 kernel/sched/core.c:7789
folio_wait_bit_common+0x3d5/0x9e0 mm/filemap.c:1323
folio_wait_writeback+0x3c/0x90 mm/page-writeback.c:3089
mpage_prepare_extent_to_map+0x4eb/0x1510 fs/ext4/inode.c:2688
ext4_do_writepages+0xa11/0x3c80 fs/ext4/inode.c:2878
ext4_writepages+0x37a/0x7d0 fs/ext4/inode.c:3026
do_writepages+0x27a/0x600 mm/page-writeback.c:2598
__writeback_single_inode+0x168/0x14a0 fs/fs-writeback.c:1737
writeback_sb_inodes+0x72e/0x1ce0 fs/fs-writeback.c:2030
wb_writeback+0x419/0xae0 fs/fs-writeback.c:2216
wb_do_writeback fs/fs-writeback.c:2363 [inline]
wb_workfn+0x14d/0xbb0 fs/fs-writeback.c:2403
process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
process_scheduled_works kernel/workqueue.c:3340 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
INFO: task syz.3.1916:15275 blocked for more than 144 seconds.
Tainted: G U W L XTNJ syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1916 state:D stack:26664 pid:15275 tgid:15275 ppid:5834 task_flags:0x440040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
io_schedule+0xbf/0x130 kernel/sched/core.c:7789
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:250
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xd9/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x910/0x12f0 fs/jbd2/transaction.c:1092
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1242
__ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:241
ext4_reserve_inode_write+0x1be/0x340 fs/ext4/inode.c:6290
__ext4_mark_inode_dirty+0x197/0x840 fs/ext4/inode.c:6465
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6502
__mark_inode_dirty+0x1f7/0x1670 fs/fs-writeback.c:2587
generic_update_time+0xcf/0xf0 fs/inode.c:2155
inode_update_time fs/inode.c:2168 [inline]
file_update_time_flags+0x410/0x520 fs/inode.c:2395
ext4_page_mkwrite+0x33d/0x1880 fs/ext4/inode.c:6668
do_page_mkwrite+0x174/0x380 mm/memory.c:3528
do_shared_fault mm/memory.c:5831 [inline]
do_fault+0x3fc/0x1ad0 mm/memory.c:5893
do_pte_missing mm/memory.c:4401 [inline]
handle_pte_fault mm/memory.c:6273 [inline]
__handle_mm_fault+0x1919/0x2bb0 mm/memory.c:6411
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6580
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x64/0xc0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7feb1846f17a
RSP: 002b:00007ffe43712040 EFLAGS: 00010202
RAX: 0000001b314eb000 RBX: 00007feb19315720 RCX: 0000001b314eaff8
RDX: 0000001b31124220 RSI: 0000000000000008 RDI: 00007feb19315720
RBP: ffffffff816e5f86 R08: 00007feb187e6038 R09: 00007feb187d2000
R10: 00007feb17fff008 R11: 000000000000000d R12: 000000000000000d
R13: 00000000000000a4 R14: ffffffff816e556d R15: 0000000000000167
INFO: task syz.3.1916:15280 blocked for more than 144 seconds.
Tainted: G U W L XTNJ syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1916 state:D stack:24040 pid:15280 tgid:15275 ppid:5834 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
wb_wait_for_completion fs/fs-writeback.c:226 [inline]
wb_wait_for_completion+0x1a6/0x260 fs/fs-writeback.c:222
sync_inodes_sb+0x1e7/0xc10 fs/fs-writeback.c:2894
sync_filesystem fs/sync.c:64 [inline]
sync_filesystem+0x177/0x290 fs/sync.c:30
fs_bdev_sync+0x2c/0x40 fs/super.c:1490
blkdev_flushbuf block/ioctl.c:515 [inline]
blkdev_common_ioctl+0x2250/0x2b80 block/ioctl.c:653
blkdev_ioctl+0x2b5/0x6e0 block/ioctl.c:786
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl fs/ioctl.c:583 [inline]
__x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb1858f7c9
RSP: 002b:00007feb19398038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007feb187e5fa0 RCX: 00007feb1858f7c9
RDX: 0000000000000000 RSI: 0000000000001261 RDI: 0000000000000006
RBP: 00007feb18613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feb187e6038 R14: 00007feb187e5fa0 R15: 00007ffe43711fb8
INFO: task syz.4.1917:15284 blocked for more than 144 seconds.
Tainted: G U W L XTNJ syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1917 state:D stack:26664 pid:15284 tgid:15284 ppid:8936 task_flags:0x440040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
io_schedule+0xbf/0x130 kernel/sched/core.c:7789
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:250
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xd9/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x910/0x12f0 fs/jbd2/transaction.c:1092
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1242
__ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:241
ext4_reserve_inode_write+0x1be/0x340 fs/ext4/inode.c:6290
__ext4_mark_inode_dirty+0x197/0x840 fs/ext4/inode.c:6465
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6502
__mark_inode_dirty+0x1f7/0x1670 fs/fs-writeback.c:2587
generic_update_time+0xcf/0xf0 fs/inode.c:2155
inode_update_time fs/inode.c:2168 [inline]
file_update_time_flags+0x410/0x520 fs/inode.c:2395
ext4_page_mkwrite+0x33d/0x1880 fs/ext4/inode.c:6668
do_page_mkwrite+0x174/0x380 mm/memory.c:3528
do_shared_fault mm/memory.c:5831 [inline]
do_fault+0x3fc/0x1ad0 mm/memory.c:5893
do_pte_missing mm/memory.c:4401 [inline]
handle_pte_fault mm/memory.c:6273 [inline]
__handle_mm_fault+0x1919/0x2bb0 mm/memory.c:6411
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6580
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x64/0xc0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fe7ea86f922
RSP: 002b:00007ffc1cbddd70 EFLAGS: 00010202
RAX: 000000000002e008 RBX: 00007fe7eb715720 RCX: 0000000000000000
RDX: 0000001b336f6000 RSI: 0000000000000008 RDI: 00007fe7eb715720
RBP: 0000000000000936 R08: 00007fe7e9bfb058 R09: 00007fe7eabd2000
R10: 00007fe7e9bfb008 R11: 0000000000000012 R12: ffffffff823378d9
R13: 00007fe7eabe6218 R14: 00000000000001c9 R15: fffffffffffd2000
INFO: task udevd:15292 blocked for more than 145 seconds.
Tainted: G U W L XTNJ syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:26056 pid:15292 tgid:15292 ppid:14541 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
io_schedule+0xbf/0x130 kernel/sched/core.c:7789
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:250
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xd9/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
__wait_on_buffer+0x64/0x70 fs/buffer.c:123
wait_on_buffer include/linux/buffer_head.h:420 [inline]
__ext4_get_inode_loc+0x1085/0x1510 fs/ext4/inode.c:4930
ext4_get_inode_loc+0xbd/0x160 fs/ext4/inode.c:4963
ext4_xattr_ibody_get+0x106/0x4b0 fs/ext4/xattr.c:648
ext4_xattr_get+0x165/0x780 fs/ext4/xattr.c:709
__vfs_getxattr+0x13d/0x1a0 fs/xattr.c:423
get_vfs_caps_from_disk+0x140/0x550 security/commoncap.c:694
get_file_caps security/commoncap.c:785 [inline]
cap_bprm_creds_from_file+0x66b/0x1cd0 security/commoncap.c:931
security_bprm_creds_from_file+0x1e3/0x210 security/security.c:777
bprm_creds_from_file fs/exec.c:1594 [inline]
begin_new_exec+0x11c/0x3770 fs/exec.c:1105
load_elf_binary+0x8e7/0x4fe0 fs/binfmt_elf.c:1010
search_binary_handler fs/exec.c:1669 [inline]
exec_binprm fs/exec.c:1701 [inline]
bprm_execve fs/exec.c:1753 [inline]
bprm_execve+0x8c2/0x1620 fs/exec.c:1729
do_execveat_common.isra.0+0x4a5/0x610 fs/exec.c:1859
do_execve fs/exec.c:1933 [inline]
__do_sys_execve fs/exec.c:2009 [inline]
__se_sys_execve fs/exec.c:2004 [inline]
__x64_sys_execve+0x8e/0xb0 fs/exec.c:2004
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe3402f2107
RSP: 002b:00007ffee4b617b8 EFLAGS: 00000206 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00005597e77dd140 RCX: 00007fe3402f2107
RDX: 00005598232c09d0 RSI: 00007ffee4b618d0 RDI: 00007ffee4b620d0
RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000206 R12: 00005598232c09d0
R13: 00007ffee4b618d0 R14: 000000000000000e R15: 000000000000000b
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e3c9520 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e3c9520 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8e3c9520 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6775
1 lock held by klogd/5191:
#0: ffff8880b843add8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:647 [inline]
#0: ffff8880b843add8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:632
3 locks held by syz-executor/5819:
#0: ffff888075e9c808 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x117/0x580 mm/mmap_lock.c:259
#1: ffff88814e6a4518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x174/0x380 mm/memory.c:3528
#2: ffff88814e6a8950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x5e7/0x1410 fs/jbd2/transaction.c:444
3 locks held by kworker/u10:14/6045:
#0: ffff88801eefc948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x128d/0x1b20 kernel/workqueue.c:3232
#1: ffffc90004d37c90 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x914/0x1b20 kernel/workqueue.c:3233
#2: ffff88814e6a6b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x27a/0x600 mm/page-writeback.c:2598
2 locks held by getty/12463:
#0: ffff88814e6700a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900046ab2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x1510 drivers/tty/n_tty.c:2211
3 locks held by syz.3.1916/15275:
#0: ffff88805d24a808 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x117/0x580 mm/mmap_lock.c:259
#1: ffff88814e6a4518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x174/0x380 mm/memory.c:3528
#2: ffff88814e6a8950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x5e7/0x1410 fs/jbd2/transaction.c:444
2 locks held by syz.3.1916/15280:
#0: ffff88814e6a40e0 (&type->s_umount_key#32){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff88814e6a40e0 (&type->s_umount_key#32){++++}-{4:4}, at: super_lock+0x31c/0x3f0 fs/super.c:121
#1: ffff88802972a820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:397 [inline]
#1: ffff88802972a820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x1cd/0xc10 fs/fs-writeback.c:2892
3 locks held by syz.4.1917/15284:
#0: ffff888030537808 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x117/0x580 mm/mmap_lock.c:259
#1: ffff88814e6a4518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x174/0x380 mm/memory.c:3528
#2: ffff88814e6a8950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x5e7/0x1410 fs/jbd2/transaction.c:444
2 locks held by udevd/15292:
#0: ffff8880287685e0 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: prepare_bprm_creds fs/exec.c:1360 [inline]
#0: ffff8880287685e0 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: bprm_execve+0xa4/0x1620 fs/exec.c:1733
#1: ffff888077d180c8 (&ei->xattr_sem){.+.+}-{4:4}, at: ext4_xattr_get+0x14d/0x780 fs/ext4/xattr.c:708
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Tainted: G U W L XTNJ syzkaller #0 PREEMPT(full)
Tainted: [U]=USER, [W]=WARN, [L]=SOFTLOCKUP, [X]=AUX, [T]=RANDSTRUCT, [N]=TEST, [J]=FWCTL
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x133/0x180 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xe66/0x1180 kernel/hung_task.c:515
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7451 Comm: kworker/u10:44 Tainted: G U W L XTNJ syzkaller #0 PREEMPT(full)
Tainted: [U]=USER, [W]=WARN, [L]=SOFTLOCKUP, [X]=AUX, [T]=RANDSTRUCT, [N]=TEST, [J]=FWCTL
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:post_alloc_hook+0x141/0x220 mm/page_alloc.c:1849
Code: 49 83 c5 40 4d 39 ef 75 c1 e8 db 20 0e 00 eb 79 eb 6a 41 83 fe 1f 0f 87 84 16 08 ff 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f 9a b2 5f 09 41 0f b6 d5 44 89 f6 48 89 ef e8 ab 24 0e 00 84 c0
RSP: 0018:ffffc90003557448 EFLAGS: 00000286
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: fffff520006aae6e
RDX: 0000000000000000 RSI: ffffffff8daa490a RDI: ffff88802ae02304
RBP: 0000000000000030 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff88802ae029b0 R12: ffffea0001f11c00
R13: ffffffff93b44fc0 R14: 00000000000d2820 R15: ffff88813fffbb80
FS: 0000000000000000(0000) GS:ffff8881248fc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ca3c4b2660 CR3: 00000000319bc000 CR4: 00000000003526f0
Call Trace:
prep_new_page mm/page_alloc.c:1854 [inline]
get_page_from_freelist+0xd0b/0x31a0 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x25f/0x2430 mm/page_alloc.c:5210
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2486
alloc_slab_page mm/slub.c:3075 [inline]
allocate_slab mm/slub.c:3248 [inline]
new_slab+0x2c3/0x430 mm/slub.c:3302
___slab_alloc+0xe18/0x1c90 mm/slub.c:4656
__slab_alloc.constprop.0+0x63/0x110 mm/slub.c:4779
__slab_alloc_node mm/slub.c:4855 [inline]
slab_alloc_node mm/slub.c:5251 [inline]
__do_kmalloc_node mm/slub.c:5656 [inline]
__kmalloc_node_track_caller_noprof+0x4d6/0x930 mm/slub.c:5764
kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:608
__alloc_skb+0x186/0x410 net/core/skbuff.c:690
alloc_skb include/linux/skbuff.h:1383 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:818 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:875 [inline]
nsim_dev_trap_report_work+0x2b1/0xcf0 drivers/net/netdevsim/dev.c:921
process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
process_scheduled_works kernel/workqueue.c:3340 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246