INFO: task syz-executor.1:2031 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28152 pid: 2031 ppid: 16565 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
rwsem_down_write_slowpath+0x761/0x1130 kernel/locking/rwsem.c:1117
__down_write_common kernel/locking/rwsem.c:1272 [inline]
__down_write_common kernel/locking/rwsem.c:1269 [inline]
__down_write kernel/locking/rwsem.c:1281 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1528
inode_lock include/linux/fs.h:783 [inline]
fuse_flush+0x20b/0x5d0 fs/fuse/file.c:490
filp_close+0xb4/0x170 fs/open.c:1310
close_fd+0x6f/0xa0 fs/file.c:642
__do_sys_close fs/open.c:1329 [inline]
__se_sys_close fs/open.c:1327 [inline]
__x64_sys_close+0x2f/0xa0 fs/open.c:1327
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fcaf26fe72b
RSP: 002b:00007ffdf5736df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fcaf26fe72b
RDX: 0000001b2e02a71c RSI: ffffffff8939db02 RDI: 0000000000000006
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2e02a100
R10: 0000000000000365 R11: 0000000000000293 R12: 00007fcaf285fb60
R13: 00007fcaf285fb60 R14: 00007fcaf285ef60 R15: 0000000000194f73
</TASK>
INFO: task syz-executor.1:2069 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28120 pid: 2069 ppid: 16565 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
fuse_direct_IO+0x716/0xf40 fs/fuse/file.c:2887
generic_file_direct_write+0x1e8/0x540 mm/filemap.c:3670
fuse_cache_write_iter fs/fuse/file.c:1325 [inline]
fuse_file_write_iter+0x5c1/0xbb0 fs/fuse/file.c:1605
call_write_iter include/linux/fs.h:2161 [inline]
aio_write+0x350/0x7a0 fs/aio.c:1577
__io_submit_one fs/aio.c:1832 [inline]
io_submit_one+0xe09/0x1b80 fs/aio.c:1879
__do_sys_io_submit fs/aio.c:1938 [inline]
__se_sys_io_submit fs/aio.c:1908 [inline]
__x64_sys_io_submit+0x18c/0x330 fs/aio.c:1908
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fcaf274bae9
RSP: 002b:00007fcaefca0188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007fcaf285f020 RCX: 00007fcaf274bae9
RDX: 0000000020000780 RSI: 0000000000000004 RDI: 00007fcaf283a000
RBP: 00007fcaf27a5f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdf5736d8f R14: 00007fcaefca0300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.1:2111 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28768 pid: 2111 ppid: 2031 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
rwsem_down_write_slowpath+0x761/0x1130 kernel/locking/rwsem.c:1117
__down_write_common kernel/locking/rwsem.c:1272 [inline]
__down_write_common kernel/locking/rwsem.c:1269 [inline]
__down_write kernel/locking/rwsem.c:1281 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1528
inode_lock include/linux/fs.h:783 [inline]
fuse_flush+0x20b/0x5d0 fs/fuse/file.c:490
filp_close+0xb4/0x170 fs/open.c:1310
close_files fs/file.c:403 [inline]
put_files_struct fs/file.c:418 [inline]
put_files_struct+0x1d0/0x350 fs/file.c:415
exit_files+0x7e/0xa0 fs/file.c:435
do_exit+0xbdd/0x2b40 kernel/exit.c:827
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x21d0 kernel/signal.c:2820
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fcaf274bae9
RSP: 002b:00007fcaefc7f218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fcaf285f0e8 RCX: 00007fcaf274bae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcaf285f0e8
RBP: 00007fcaf285f0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcaf285f0ec
R13: 00007ffdf5736d8f R14: 00007fcaefc7f300 R15: 0000000000022000
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b983920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446
1 lock held by in:imklog/6175:
1 lock held by syz-executor.1/2031:
#0: ffff88818a8c2310 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#0: ffff88818a8c2310 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: fuse_flush+0x20b/0x5d0 fs/fuse/file.c:490
1 lock held by syz-executor.1/2069:
#0: ffff88818a8c2310 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#0: ffff88818a8c2310 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: fuse_cache_write_iter fs/fuse/file.c:1306 [inline]
#0: ffff88818a8c2310 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: fuse_file_write_iter+0x3c1/0xbb0 fs/fuse/file.c:1605
1 lock held by syz-executor.1/2111:
#0: ffff88818a8c2310 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:783 [inline]
#0: ffff88818a8c2310 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: fuse_flush+0x20b/0x5d0 fs/fuse/file.c:490
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8617 Comm: kworker/u4:8 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:debug_object_activate+0xa6/0x3e0 lib/debugobjects.c:656
Code: 48 c7 44 24 50 00 00 00 00 48 c7 44 24 40 00 00 00 00 48 c7 44 24 48 00 00 00 00 85 c0 c7 44 24 50 05 00 00 00 48 89 74 24 60 <75> 45 48 ba 00 00 00 00 00 fc ff df 49 01 d6 49 c7 06 00 00 00 00
RSP: 0018:ffffc900189f7960 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880b9c28280 RCX: 0000000000000000
RDX: ffff888080488000 RSI: ffffffff898df180 RDI: ffffc900189f7b88
RBP: ffffc900189f7b88 R08: 0000000000028280 R09: 0000000000000003
R10: ffffffff8166d297 R11: 0000000000000000 R12: ffff8880b9c282c8
R13: dffffc0000000000 R14: 1ffff9200313ef2e R15: 00000000ffffffff
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f987390e010 CR3: 000000000b68e000 CR4: 0000000000350ef0
Call Trace:
<TASK>
debug_timer_activate kernel/time/timer.c:729 [inline]
__mod_timer+0x77d/0xe30 kernel/time/timer.c:1050
schedule_timeout+0x145/0x2a0 kernel/time/timer.c:1880
toggle_allocation_gate mm/kfence/core.c:633 [inline]
toggle_allocation_gate+0x305/0x390 mm/kfence/core.c:618
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
----------------
Code disassembly (best guess):
0: 48 c7 44 24 50 00 00 movq $0x0,0x50(%rsp)
7: 00 00
9: 48 c7 44 24 40 00 00 movq $0x0,0x40(%rsp)
10: 00 00
12: 48 c7 44 24 48 00 00 movq $0x0,0x48(%rsp)
19: 00 00
1b: 85 c0 test %eax,%eax
1d: c7 44 24 50 05 00 00 movl $0x5,0x50(%rsp)
24: 00
25: 48 89 74 24 60 mov %rsi,0x60(%rsp)
* 2a: 75 45 jne 0x71 <-- trapping instruction
2c: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
33: fc ff df
36: 49 01 d6 add %rdx,%r14
39: 49 c7 06 00 00 00 00 movq $0x0,(%r14)