INFO: task syz-executor:6522 blocked for more than 143 seconds.
Not tainted 6.12.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20824 pid:6522 tgid:6522 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x18a7/0x4b70 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x147/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:752
lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
jfs_umount+0x2ca/0x3a0 fs/jfs/jfs_umount.c:114
jfs_put_super+0x86/0x180 fs/jfs/super.c:194
generic_shutdown_super+0x135/0x2d0 fs/super.c:642
kill_block_super+0x40/0x90 fs/super.c:1696
deactivate_locked_super+0xc0/0x120 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24b/0x310 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x163/0x350 kernel/entry/common.c:218
do_syscall_64+0x8a/0x180 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f362f37fa47
RSP: 002b:00007ffdec0ee718 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f362f37fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdec0ee7d0
RBP: 00007ffdec0ee7d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdec0ef850
R13: 00007f362f3f11cc R14: 000000000001ee22 R15: 00007ffdec0ef890
INFO: task syz-executor:7643 blocked for more than 144 seconds.
Not tainted 6.12.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20488 pid:7643 tgid:7643 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x18a7/0x4b70 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x147/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:752
lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
jfs_umount+0x2ca/0x3a0 fs/jfs/jfs_umount.c:114
jfs_put_super+0x86/0x180 fs/jfs/super.c:194
generic_shutdown_super+0x135/0x2d0 fs/super.c:642
kill_block_super+0x40/0x90 fs/super.c:1696
deactivate_locked_super+0xc0/0x120 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24b/0x310 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x163/0x350 kernel/entry/common.c:218
do_syscall_64+0x8a/0x180 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f7571b7fa47
RSP: 002b:00007fff76c309b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7571b7fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff76c30a70
RBP: 00007fff76c30a70 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff76c31af0
R13: 00007f7571bf11cc R14: 000000000002aa3d R15: 00007fff76c31b30
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e3371e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e3371e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e3371e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:4/61:
3 locks held by udevd/5151:
2 locks held by getty/5530:
#0: ffff888034c920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a2/0x1df0 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/6515:
2 locks held by syz-executor/6522:
#0: ffff88807ed540e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807ed540e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807ed540e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xb1/0xf0 fs/super.c:505
#1: ffffffff8e75ce28 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/7134:
#0: ffff888052d900e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888052d900e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888052d900e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xb1/0xf0 fs/super.c:505
#1: ffffffff8e75ce28 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/7279:
#0: ffff88802429e0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802429e0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802429e0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xb1/0xf0 fs/super.c:505
#1: ffffffff8e75ce28 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/7458:
#0: ffff888024f140e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888024f140e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888024f140e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xb1/0xf0 fs/super.c:505
#1: ffffffff8e75ce28 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/7646:
#0: ffff8880684ec0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880684ec0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880684ec0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xb1/0xf0 fs/super.c:505
#1: ffffffff8e75ce28 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/7647:
#0: ffff888063d280e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888063d280e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888063d280e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xb1/0xf0 fs/super.c:505
#1: ffffffff8e75ce28 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xae/0x530 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz.3.623/9226:
2 locks held by syz.6.624/9228:
2 locks held by syz.5.626/9232:
2 locks held by syz.8.627/9234:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x23d/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x194/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfe4/0x1030 kernel/hung_task.c:379
kthread+0x2ec/0x380 kernel/kthread.c:389
ret_from_fork+0x47/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6515 Comm: syz-executor Not tainted 6.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:depot_fetch_stack+0x1/0xb0 lib/stackdepot.c:440
Code: 90 90 90 90 90 90 90 90 90 85 ff 74 02 eb 1a 31 c0 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <41> 56 53 89 fb 44 8b 35 9b e8 40 15 89 fd 81 e5 ff ff 01 00 ff cd
RSP: 0018:ffffc90004347448 EFLAGS: 00000206
RAX: ffffffff8207631f RBX: 0000000001420001 RCX: ffff8880304a3c00
RDX: 0000000000000000 RSI: 0000000001420001 RDI: 0000000006c201f0
RBP: 0000000000001973 R08: ffffffff820762ff R09: 1ffffffff1f61dad
R10: dffffc0000000000 R11: fffffbfff1f61dae R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88801d472644 R15: 0000000006c201f0
FS: 000055556672f500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fde25272000 CR3: 00000000322fc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
dec_stack_record_count mm/page_owner.c:222 [inline]
__reset_page_owner+0x31c/0x430 mm/page_owner.c:310
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_folios+0xee0/0x1880 mm/page_alloc.c:2686
folios_put_refs+0x764/0x860 mm/swap.c:1007
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x644/0x1cc0 mm/shmem.c:1032
shmem_truncate_range mm/shmem.c:1144 [inline]
shmem_evict_inode+0x29a/0xa90 mm/shmem.c:1272
evict+0x4e4/0x9a0 fs/inode.c:725
__dentry_kill+0x200/0x610 fs/dcache.c:615
dput+0x19b/0x2b0 fs/dcache.c:857
__fput+0x5d2/0x880 fs/file_table.c:439
task_work_run+0x24b/0x310 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x163/0x350 kernel/entry/common.c:218
do_syscall_64+0x8a/0x180 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f1f22f7fa47
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffc69e65a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1f22f7fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffc69e6660
RBP: 00007fffc69e6660 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffc69e76e0
R13: 00007f1f22ff11cc R14: 000000000001d4e4 R15: 00007fffc69e7720