INFO: task syz-executor.0:5497 blocked for more than 143 seconds.
Not tainted 6.2.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24408 pid:5497 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb4a/0x5410 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095
__down_read_common kernel/locking/rwsem.c:1260 [inline]
__down_read kernel/locking/rwsem.c:1269 [inline]
down_read+0xe6/0x450 kernel/locking/rwsem.c:1511
inode_lock_shared include/linux/fs.h:766 [inline]
lookup_slow fs/namei.c:1701 [inline]
walk_component+0x296/0x4e0 fs/namei.c:1993
link_path_walk.part.0+0x553/0xb20 fs/namei.c:2320
link_path_walk fs/namei.c:2245 [inline]
path_openat+0x1f6/0x2290 fs/namei.c:3710
do_filp_open+0x1a9/0x3e0 fs/namei.c:3741
do_sys_openat2+0x11e/0x3f0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x11f/0x1d0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa00ac8bc48
RSP: 002b:00007ffd5aa699b0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa00ac8bc48
RDX: 0000000000090800 RSI: 00007fa00ace6bc8 RDI: 00000000ffffff9c
RBP: 00007ffd5aa69a7c R08: 0000000000090800 R09: 00007fa00ace6bc8
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000012bfe R14: 0000000000000009 R15: 00007ffd5aa69ae0
INFO: task syz-executor.0:5583 blocked for more than 143 seconds.
Not tainted 6.2.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26832 pid:5583 ppid:5497 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb4a/0x5410 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x598/0xc20 fs/fuse/dev.c:511
fuse_lookup_name+0x263/0x5e0 fs/fuse/dir.c:392
fuse_lookup.part.0+0xd6/0x2c0 fs/fuse/dir.c:433
__lookup_slow+0x200/0x3f0 fs/namei.c:1685
lookup_slow fs/namei.c:1702 [inline]
walk_component+0x2a3/0x4e0 fs/namei.c:1993
link_path_walk.part.0+0x553/0xb20 fs/namei.c:2320
link_path_walk fs/namei.c:2245 [inline]
path_openat+0x1f6/0x2290 fs/namei.c:3710
do_filp_open+0x1a9/0x3e0 fs/namei.c:3741
do_sys_openat2+0x11e/0x3f0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x11f/0x1d0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa00ac8c0d9
RSP: 002b:00007fa00b97b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa00adabf80 RCX: 00007fa00ac8c0d9
RDX: 0000000000000042 RSI: 0000000020002080 RDI: ffffffffffffff9c
RBP: 00007fa00ace7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd5aa697bf R14: 00007fa00b97b300 R15: 0000000000022000
INFO: task syz-executor.0:5587 blocked for more than 144 seconds.
Not tainted 6.2.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28384 pid:5587 ppid:5497 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb4a/0x5410 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
rwsem_down_write_slowpath+0x600/0x12e0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write_common kernel/locking/rwsem.c:1302 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write_nested+0x1ec/0x220 kernel/locking/rwsem.c:1673
inode_lock_nested include/linux/fs.h:791 [inline]
fuse_reverse_inval_entry+0x42/0x4a0 fs/fuse/dir.c:1184
fuse_notify_delete fs/fuse/dev.c:1550 [inline]
fuse_notify fs/fuse/dev.c:1799 [inline]
fuse_dev_do_write+0x1e41/0x25a0 fs/fuse/dev.c:1874
fuse_dev_write+0x133/0x1c0 fs/fuse/dev.c:1958
call_write_iter include/linux/fs.h:2189 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x823/0xd50 fs/read_write.c:584
ksys_write+0xf2/0x1c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa00ac8c0d9
RSP: 002b:00007fa00b95a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa00adac050 RCX: 00007fa00ac8c0d9
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fa00ace7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd5aa697bf R14: 00007fa00b95a300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
#0: ffffffff8b783f90 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
#0: ffffffff8b783c90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
#0: ffffffff8b784ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by getty/4732:
#0: ffff88802ae80098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900020182f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb73/0x1040 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.0/5497:
#0: ffff88806d93d850 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff88806d93d850 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1701 [inline]
#0: ffff88806d93d850 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x296/0x4e0 fs/namei.c:1993
2 locks held by syz-executor.0/5583:
#0: ffff88806d93d850 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff88806d93d850 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1701 [inline]
#0: ffff88806d93d850 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x296/0x4e0 fs/namei.c:1993
#1: ffff88806d93dcb8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xaf/0xe0 fs/fuse/inode.c:475
2 locks held by syz-executor.0/5587:
#0: ffff888028903338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify_delete fs/fuse/dev.c:1549 [inline]
#0: ffff888028903338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify fs/fuse/dev.c:1799 [inline]
#0: ffff888028903338 (&fc->killsb){.+.+}-{3:3}, at: fuse_dev_do_write+0xb04/0x25a0 fs/fuse/dev.c:1874
#1: ffff88806d93d850 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff88806d93d850 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x42/0x4a0 fs/fuse/dir.c:1184
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.2.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x5b/0x81 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x18/0x106 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x259/0x2d0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0x8c8/0xc60 kernel/hung_task.c:377
kthread+0x298/0x340 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: kcompactd0 Not tainted 6.2.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_release+0x182/0x810 kernel/locking/lockdep.c:5684
Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 2b 06 00 00 45 8b 8e 34 0a 00 00 45 85 c9 0f 85 9e 02 00 00 9c <8f> 04 24 fa 48 c7 c7 c0 82 6b 89 e8 ce ee d2 07 48 89 da 83 e3 07
RSP: 0018:ffffc90000c7fa18 EFLAGS: 00000046
RAX: 0000000000000007 RBX: ffffffff8d60d84c RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff896b8280 RDI: ffff88801667cbb4
RBP: 1ffff9200018ff46 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff90d4d1c8
R13: ffffffff896dd360 R14: ffff88801667c180 R15: 1ffff9200018ff62
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d2b7002028 CR3: 000000000b48e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x1a/0x70 kernel/locking/spinlock.c:194
debug_object_assert_init lib/debugobjects.c:906 [inline]
debug_object_assert_init+0x24a/0x2e0 lib/debugobjects.c:870
debug_timer_assert_init kernel/time/timer.c:792 [inline]
debug_assert_init kernel/time/timer.c:837 [inline]
__mod_timer+0x87/0xca0 kernel/time/timer.c:1020
schedule_timeout+0x11c/0x260 kernel/time/timer.c:2166
kcompactd+0x60d/0xb30 mm/compaction.c:2949
kthread+0x298/0x340 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308