INFO: task syz-executor.0:6128 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-11677-g2ba9f676d0a2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:19488 pid:6128 tgid:6128 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
inode_lock_shared include/linux/fs.h:828 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1807
walk_component fs/namei.c:2112 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2477
path_openat+0x266/0x3590 fs/namei.c:3983
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1428
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: 0033:0x7f4bc167b841
RSP: 002b:00007fff59e86d10 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4bc167b841
RDX: 0000000000090800 RSI: 00007f4bc16d7b46 RDI: 00000000ffffff9c
RBP: 00007fff59e86ddc R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000015d54 R14: 0000000000015a0a R15: 0000000000000009
INFO: task syz-executor.0:6188 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-11677-g2ba9f676d0a2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22720 pid:6188 tgid:6186 ppid:6128 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
request_wait_answer fs/fuse/dev.c:464 [inline]
__fuse_request_send fs/fuse/dev.c:478 [inline]
__fuse_simple_request+0xe2a/0x1850 fs/fuse/dev.c:572
fuse_simple_request fs/fuse/fuse_i.h:1172 [inline]
fuse_lookup_name+0x37b/0x8f0 fs/fuse/dir.c:387
fuse_lookup+0x182/0x600 fs/fuse/dir.c:430
__lookup_slow+0x28e/0x3f0 fs/namei.c:1791
lookup_slow+0x53/0x70 fs/namei.c:1808
walk_component fs/namei.c:2112 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2477
path_openat+0x266/0x3590 fs/namei.c:3983
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1428
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: 0033:0x7f4bc167aa90
RSP: 002b:00007f4bc235cc00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000004000 RCX: 00007f4bc167aa90
RDX: 0000000000004000 RSI: 00007f4bc235cca0 RDI: 00000000ffffff9c
RBP: 00007f4bc235cca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4bc179bf80 R15: 00007fff59e86a68
INFO: task syz-executor.0:6192 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-11677-g2ba9f676d0a2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26200 pid:6192 tgid:6186 ppid:6128 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:853 [inline]
fuse_reverse_inval_entry+0x62/0x720 fs/fuse/dir.c:1373
fuse_notify_delete fs/fuse/dev.c:1609 [inline]
fuse_notify fs/fuse/dev.c:1925 [inline]
fuse_dev_do_write+0x3fe6/0x5d60 fs/fuse/dev.c:2003
fuse_dev_write+0x148/0x1d0 fs/fuse/dev.c:2087
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0xaed/0xd30 fs/read_write.c:679
ksys_write+0x18f/0x2b0 fs/read_write.c:731
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: 0033:0x7f4bc167bdb9
RSP: 002b:00007f4bc233c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4bc179c050 RCX: 00007f4bc167bdb9
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f4bc16d8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4bc179c050 R15: 00007fff59e86a68
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e93c5a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e93c5a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e93c5a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by getty/5583:
#0: ffff88803103f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032fb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/6128:
#0: ffff888077ac0148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:828 [inline]
#0: ffff888077ac0148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1807
2 locks held by syz-executor.0/6188:
#0: ffff888077ac0148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:828 [inline]
#0: ffff888077ac0148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1807
#1: ffff888077ac0610 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xd2/0x120 fs/fuse/inode.c:586
2 locks held by syz-executor.0/6192:
#0: ffff888078eaeb48 (&fc->killsb){.+.+}-{4:4}, at: fuse_notify_delete fs/fuse/dev.c:1608 [inline]
#0: ffff888078eaeb48 (&fc->killsb){.+.+}-{4:4}, at: fuse_notify fs/fuse/dev.c:1925 [inline]
#0: ffff888078eaeb48 (&fc->killsb){.+.+}-{4:4}, at: fuse_dev_do_write+0x3f7c/0x5d60 fs/fuse/dev.c:2003
#1: ffff888077ac0148 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:853 [inline]
#1: ffff888077ac0148 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: fuse_reverse_inval_entry+0x62/0x720 fs/fuse/dir.c:1373
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-11677-g2ba9f676d0a2 #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+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+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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: 966 Comm: kworker/0:2 Not tainted 6.12.0-syzkaller-11677-g2ba9f676d0a2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: 0x0 (events)
RIP: 0010:__resched_curr+0x74/0x440 kernel/sched/core.c:1080
Code: 0a 8e 48 c7 44 24 30 d0 0e 64 81 48 8d 54 24 20 48 c1 ea 03 48 b8 f1 f1 f1 f1 00 f3 f3 f3 48 89 d1 48 89 54 24 18 4a 89 04 2a <48> 8d 9f 00 0b 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48
RSP: 0018:ffffc90003a96fa0 EFLAGS: 00000012
RAX: f3f3f300f1f1f1f1 RBX: ffff8880b873e990 RCX: 1ffff92000752df8
RDX: 1ffff92000752df8 RSI: 0000000000000003 RDI: ffff8880b873e8c0
RBP: ffffc90003a97058 R08: ffffffff901d9bf7 R09: 1ffffffff203b37e
R10: dffffc0000000000 R11: fffffbfff203b37f R12: 0000000000000003
R13: dffffc0000000000 R14: 0000020101290dc8 R15: ffff8880b873e8c0
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056523684e600 CR3: 000000007dc72000 CR4: 0000000000350ef0
Call Trace:
update_curr+0x5b8/0xdb0 kernel/sched/fair.c:1254
dequeue_entity+0x28/0x1a70 kernel/sched/fair.c:5480
dequeue_entities+0x234/0xfb0 kernel/sched/fair.c:7102
dequeue_task_fair+0x2b0/0x540 kernel/sched/fair.c:7196
detach_task kernel/sched/fair.c:9454 [inline]
detach_tasks kernel/sched/fair.c:9590 [inline]
sched_balance_rq+0x5df4/0x8620 kernel/sched/fair.c:11734
sched_balance_newidle+0x6ba/0xfd0 kernel/sched/fair.c:12789
pick_next_task_fair+0x40/0xc90 kernel/sched/fair.c:8937
__pick_next_task+0xdd/0x400 kernel/sched/core.c:6023
__schedule+0x776/0x4c30 kernel/sched/core.c:6709
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
worker_thread+0xa30/0xd30 kernel/workqueue.c:3406
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244