INFO: task syz-executor.0:6137 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller-00187-g8f6629c004b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:19216 pid:6137 tgid:6137 ppid:1 task_flags:0x400140 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
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:887 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1809
walk_component fs/namei.c:2114 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2479
path_openat+0x266/0x3590 fs/namei.c:3985
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1454
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: 0033:0x7fa4246794d1
RSP: 002b:00007ffc1d901670 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa4246794d1
RDX: 0000000000090800 RSI: 00007fa4246d42e6 RDI: 00000000ffffff9c
RBP: 00007ffc1d90173c R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000179ac R14: 000000000001766c R15: 0000000000000009
INFO: task syz-executor.0:6160 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller-00187-g8f6629c004b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22944 pid:6160 tgid:6159 ppid:6137 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
request_wait_answer fs/fuse/dev.c:453 [inline]
__fuse_request_send fs/fuse/dev.c:467 [inline]
__fuse_simple_request+0xe2a/0x1850 fs/fuse/dev.c:561
fuse_simple_request fs/fuse/fuse_i.h:1197 [inline]
fuse_lookup_name+0x429/0x9d0 fs/fuse/dir.c:386
fuse_lookup+0x182/0x600 fs/fuse/dir.c:429
__lookup_slow+0x298/0x400 fs/namei.c:1793
lookup_slow+0x53/0x70 fs/namei.c:1810
walk_component fs/namei.c:2114 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2479
path_openat+0x266/0x3590 fs/namei.c:3985
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1454
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: 0033:0x7fa424679a29
RSP: 002b:00007fa42580d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa42478bf80 RCX: 00007fa424679a29
RDX: 0000000000000042 RSI: 0000000020002080 RDI: ffffffffffffff9c
RBP: 00007fa4246d5170 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa42478bf80 R15: 00007ffc1d901398
INFO: task syz-executor.0:6161 blocked for more than 144 seconds.
Not tainted 6.14.0-rc1-syzkaller-00187-g8f6629c004b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25912 pid:6161 tgid:6159 ppid:6137 task_flags:0x400140 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
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:912 [inline]
fuse_reverse_inval_entry+0x62/0x720 fs/fuse/dir.c:1376
fuse_notify_delete fs/fuse/dev.c:1611 [inline]
fuse_notify fs/fuse/dev.c:1928 [inline]
fuse_dev_do_write+0x47b2/0x6480 fs/fuse/dev.c:2013
fuse_dev_write+0x148/0x1d0 fs/fuse/dev.c:2097
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0xad1/0xd10 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: 0033:0x7fa424679a29
RSP: 002b:00007fa4257ec0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa42478c050 RCX: 00007fa424679a29
RDX: 000000000000002c RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fa4246d5170 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fa42478c050 R15: 00007ffc1d901398
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
2 locks held by kworker/u8:3/53:
#0: ffff8880b873e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
#1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987
2 locks held by getty/5587:
#0: ffff88814d73d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/6137:
#0: ffff888079b50148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline]
#0: ffff888079b50148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
2 locks held by syz-executor.0/6160:
#0: ffff888079b50148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline]
#0: ffff888079b50148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
#1: ffff888079b50610 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xd2/0x120 fs/fuse/inode.c:587
2 locks held by syz-executor.0/6161:
#0: ffff88807d32cb48 (&fc->killsb){.+.+}-{4:4}, at: fuse_notify_delete fs/fuse/dev.c:1610 [inline]
#0: ffff88807d32cb48 (&fc->killsb){.+.+}-{4:4}, at: fuse_notify fs/fuse/dev.c:1928 [inline]
#0: ffff88807d32cb48 (&fc->killsb){.+.+}-{4:4}, at: fuse_dev_do_write+0x4752/0x6480 fs/fuse/dev.c:2013
#1: ffff888079b50148 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline]
#1: ffff888079b50148 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: fuse_reverse_inval_entry+0x62/0x720 fs/fuse/dir.c:1376
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller-00187-g8f6629c004b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
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: 0 Comm: swapper/0 Not tainted 6.14.0-rc1-syzkaller-00187-g8f6629c004b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:pick_next_entity kernel/sched/fair.c:5566 [inline]
RIP: 0010:pick_task_fair+0x2c5/0x4c0 kernel/sched/fair.c:8818
Code: e3 4d 39 e7 7d 72 4c 89 f7 e8 67 d6 01 00 49 89 c5 48 8d 58 51 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 79 80 3b 00 74 40 48 8b 7c 24 08 4c 89 ee ba 01 02 00 00
RSP: 0018:ffffffff8e607a48 EFLAGS: 00000012
RAX: 0000000000000000 RBX: ffff8880323d80d1 RCX: dffffc0000000000
RDX: ffffffff8e607cd0 RSI: ffffffff8e696580 RDI: ffff8880b863ea58
RBP: ffff8880b863ea60 R08: ffffffff815ff6b1 R09: fffffbfff1cc0f54
R10: dffffc0000000000 R11: fffffbfff1cc0f54 R12: ffff8880b863e940
R13: ffff8880323d8080 R14: ffff8880b863ea00 R15: ffff8880b863ea58
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056031fe95600 CR3: 000000000e738000 CR4: 0000000000350ef0
Call Trace:
pick_next_task_fair+0x23/0xc90 kernel/sched/fair.c:8838
__pick_next_task+0xdd/0x400 kernel/sched/core.c:6031
__schedule+0x757/0x4c90 kernel/sched/core.c:6716
schedule_idle+0x56/0x90 kernel/sched/core.c:6882
do_idle+0x567/0x5c0 kernel/sched/idle.c:353
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
rest_init+0x2dc/0x300 init/main.c:743
start_kernel+0x484/0x510 init/main.c:1099
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:515
x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:496
common_startup_64+0x13e/0x147