INFO: task kworker/u8:3:52 blocked for more than 143 seconds.
Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D stack:22680 pid:52 tgid:52 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:3)
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
hfsplus_bnode_find+0x34b/0x10c0 fs/hfsplus/bnode.c:479
hfs_bnode_split+0x293/0x1110 fs/hfsplus/brec.c:258
hfsplus_brec_insert+0x3a6/0xde0 fs/hfsplus/brec.c:100
__hfsplus_ext_write_extent+0x36b/0x5c0 fs/hfsplus/extents.c:107
hfsplus_ext_write_extent_locked fs/hfsplus/extents.c:139 [inline]
hfsplus_ext_write_extent+0x16a/0x1f0 fs/hfsplus/extents.c:150
hfsplus_write_inode+0x22/0x5e0 fs/hfsplus/super.c:155
write_inode fs/fs-writeback.c:1525 [inline]
__writeback_single_inode+0x708/0x10d0 fs/fs-writeback.c:1745
writeback_sb_inodes+0x820/0x1360 fs/fs-writeback.c:1976
wb_writeback+0x413/0xb80 fs/fs-writeback.c:2156
wb_do_writeback fs/fs-writeback.c:2303 [inline]
wb_workfn+0x410/0x1080 fs/fs-writeback.c:2343
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
INFO: task syz-executor:5816 blocked for more than 144 seconds.
Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20096 pid:5816 tgid:5816 ppid:1 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:216
__writeback_inodes_sb_nr+0x2d2/0x380 fs/fs-writeback.c:2735
sync_filesystem+0xa4/0x230 fs/sync.c:54
generic_shutdown_super+0x72/0x2d0 fs/super.c:621
kill_block_super+0x44/0x90 fs/super.c:1710
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24f/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:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc01187057
RSP: 002b:00007ffdc6664c98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007efc01187057
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdc6664d50
RBP: 00007ffdc6664d50 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdc6665dd0
R13: 00007efc01201894 R14: 00007ffdc6665e10 R15: 0000000000000017
</TASK>
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/30:
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
4 locks held by kworker/u8:3/52:
#0: ffff8880202f9148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff8880202f9148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc90000bc7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000bc7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffff8880327d5f88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_ext_write_extent+0x8e/0x1f0 fs/hfsplus/extents.c:149
#3: ffff88805e7a40b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x14a/0x1c0 fs/hfsplus/bfind.c:28
2 locks held by getty/5573:
#0: ffff888035b1a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5816:
#0: ffff8880279960e0 (&type->s_umount_key#90){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880279960e0 (&type->s_umount_key#90){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880279960e0 (&type->s_umount_key#90){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
5 locks held by kworker/u8:9/6406:
2 locks held by dhcpcd/7843:
1 lock held by syz.9.417/9428:
1 lock held by syz.4.414/9392:
1 lock held by syz.1.418/9405:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9428 Comm: syz.9.417 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__this_cpu_preempt_check+0x0/0x20 lib/smp_processor_id.c:65
Code: 19 46 f5 e8 e2 ad 48 f5 eb a8 e8 ab e0 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 89 fe 48 c7 c7 e0 dc 5e 8c e9 bd fe ff ff 66 2e 0f
RSP: 0018:ffffc9000475f3b8 EFLAGS: 00000046
RAX: 1ffff110051c9c9a RBX: 0000000000000246 RCX: ffffc9000475f403
RDX: 0000000000000000 RSI: ffff888028e4e4d8 RDI: ffffffff8c0aaae0
RBP: ffffc9000475f4f0 R08: ffffffff90185277 R09: 1ffffffff2030a4e
R10: dffffc0000000000 R11: fffffbfff2030a4f R12: 1ffff920008ebe84
R13: 0000000000000246 R14: ffffc9000475f450 R15: dffffc0000000000
FS: 00007f387b3f56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2f7b23c378 CR3: 00000000484a8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
lock_release+0x5ec/0xa30 kernel/locking/lockdep.c:5872
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
page_ext_put+0xa3/0xc0 mm/page_ext.c:550
__reset_page_owner+0x2de/0x430 mm/page_owner.c:300
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_folios+0xe23/0x1890 mm/page_alloc.c:2706
folios_put_refs+0x76c/0x860 mm/swap.c:962
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x593/0x1820 mm/shmem.c:1044
shmem_truncate_range mm/shmem.c:1156 [inline]
shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1284
evict+0x4e8/0x9a0 fs/inode.c:796
__dentry_kill+0x20d/0x630 fs/dcache.c:625
dput+0x19f/0x2b0 fs/dcache.c:867
__fput+0x5ba/0xa50 fs/file_table.c:458
__do_sys_close fs/open.c:1554 [inline]
__se_sys_close fs/open.c:1539 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1539
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f387a58498a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007f387b3f4e00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f387a58498a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000005598
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f387b3f4ef0 R14: 00007f387b3f4eb0 R15: 00007f386fe00000
</TASK>