INFO: task syz-executor.0:5397 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-next-20240703-syzkaller-10451-g0b58e108042b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:19600 pid:5397 tgid:5397 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5248 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6600
__schedule_loop kernel/sched/core.c:6677 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6692
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6749
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:809 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1734
walk_component fs/namei.c:2030 [inline]
link_path_walk+0x9ea/0xea0 fs/namei.c:2357
path_openat+0x25d/0x3470 fs/namei.c:3839
do_filp_open+0x235/0x490 fs/namei.c:3870
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_openat fs/open.c:1447 [inline]
__se_sys_openat fs/open.c:1442 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1442
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: 0033:0x7f6ab287c311
RSP: 002b:00007fffdaab7b60 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6ab287c311
RDX: 0000000000090800 RSI: 00007f6ab28d7b46 RDI: 00000000ffffff9c
RBP: 00007fffdaab7c2c R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000017933 R14: 00000000000175e7 R15: 0000000000000009
INFO: task syz-executor.0:5464 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-next-20240703-syzkaller-10451-g0b58e108042b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23232 pid:5464 tgid:5462 ppid:5397 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5248 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6600
__schedule_loop kernel/sched/core.c:6677 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6692
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513
fuse_lookup_name+0x32e/0x890 fs/fuse/dir.c:386
fuse_lookup+0x182/0x600 fs/fuse/dir.c:429
__lookup_slow+0x28c/0x3f0 fs/namei.c:1718
lookup_slow+0x53/0x70 fs/namei.c:1735
walk_component fs/namei.c:2030 [inline]
link_path_walk+0x9ea/0xea0 fs/namei.c:2357
path_openat+0x25d/0x3470 fs/namei.c:3839
do_filp_open+0x235/0x490 fs/namei.c:3870
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_openat fs/open.c:1447 [inline]
__se_sys_openat fs/open.c:1442 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1442
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: 0033:0x7f6ab287b560
RSP: 002b:00007f6ab3635c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000004000 RCX: 00007f6ab287b560
RDX: 0000000000004000 RSI: 00007f6ab3635ca0 RDI: 00000000ffffff9c
RBP: 00007f6ab3635ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6ab299bf80 R15: 00007fffdaab78b8
INFO: task syz-executor.0:5468 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-next-20240703-syzkaller-10451-g0b58e108042b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26736 pid:5468 tgid:5462 ppid:5397 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5248 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6600
__schedule_loop kernel/sched/core.c:6677 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6692
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6749
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:834 [inline]
fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1360
fuse_notify_delete fs/fuse/dev.c:1552 [inline]
fuse_notify fs/fuse/dev.c:1857 [inline]
fuse_dev_do_write+0x38c7/0x59a0 fs/fuse/dev.c:1935
fuse_dev_write+0x149/0x1d0 fs/fuse/dev.c:2019
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
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: 0033:0x7f6ab287c859
RSP: 002b:00007f6ab36150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6ab299c050 RCX: 00007f6ab287c859
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f6ab28d8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f6ab299c050 R15: 00007fffdaab78b8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:333 [inline]
#0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:845 [inline]
#0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6704
2 locks held by kworker/0:2/1155:
2 locks held by getty/4849:
#0: ffff88802adde0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5397:
#0: ffff888075d00148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:809 [inline]
#0: ffff888075d00148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
2 locks held by syz-executor.0/5464:
#0: ffff888075d00148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:809 [inline]
#0: ffff888075d00148 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
#1: ffff888075d00610 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:554
2 locks held by syz-executor.0/5468:
#0: ffff888025047338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify_delete fs/fuse/dev.c:1551 [inline]
#0: ffff888025047338 (&fc->killsb){.+.+}-{3:3}, at: fuse_notify fs/fuse/dev.c:1857 [inline]
#0: ffff888025047338 (&fc->killsb){.+.+}-{3:3}, at: fuse_dev_do_write+0x3865/0x59a0 fs/fuse/dev.c:1935
#1: ffff888075d00148 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:834 [inline]
#1: ffff888075d00148 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1360
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-next-20240703-syzkaller-10451-g0b58e108042b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__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:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 1095 Comm: kworker/u8:5 Not tainted 6.10.0-rc6-next-20240703-syzkaller-10451-g0b58e108042b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: 0x0 (events_unbound)
RIP: 0010:rq_unpin_lock kernel/sched/sched.h:1712 [inline]
RIP: 0010:prepare_lock_switch kernel/sched/core.c:4985 [inline]
RIP: 0010:context_switch kernel/sched/core.c:5245 [inline]
RIP: 0010:__schedule+0x1731/0x4a60 kernel/sched/core.c:6600
Code: 00 00 00 fc ff df 48 8b 4c 24 40 80 3c 01 00 74 0a 48 8b 7c 24 20 e8 ee 18 60 f6 48 8b 44 24 20 48 8b 18 eb 05 48 8b 5c 24 10 <48> 83 c3 18 49 be 00 00 00 00 00 fc ff df 48 8b 84 24 c8 00 00 00
RSP: 0018:ffffc90003fffba0 EFLAGS: 00000046
RAX: ffff8880b943ea00 RBX: ffff8880b943ea00 RCX: 1ffff11017287ef3
RDX: dffffc0000000000 RSI: ffffffff8bcada80 RDI: ffff888074a41570
RBP: ffffc90003fffd88 R08: ffffffff81338a11 R09: 1ffff1100e9460ef
R10: dffffc0000000000 R11: ffffed100e9460f0 R12: ffff888022964150
R13: 1ffff1100452c82a R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562d8f9f6600 CR3: 000000002dce2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__schedule_loop kernel/sched/core.c:6677 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6692
worker_thread+0xa2c/0xd40 kernel/workqueue.c:3398
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