INFO: task syz-executor.2:5088 blocked for more than 143 seconds.
Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23712 pid:5088 tgid:5088 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:544
fuse_lookup+0x14d/0x430 fs/fuse/dir.c:424
__lookup_slow+0x24d/0x450 fs/namei.c:1694
lookup_slow fs/namei.c:1711 [inline]
walk_component+0x349/0x5a0 fs/namei.c:2002
link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329
link_path_walk fs/namei.c:2254 [inline]
path_openat+0x23f/0x2c50 fs/namei.c:3775
do_filp_open+0x1de/0x430 fs/namei.c:3809
do_sys_openat2+0x176/0x1e0 fs/open.c:1437
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1463
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff0a187c741
RSP: 002b:00007ffc206f7c70 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000013af RCX: 00007ff0a187c741
RDX: 0000000000090800 RSI: 00007ff0a18c845d RDI: 00000000ffffff9c
RBP: 00007ffc206f7d3c R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 000000000017567a R14: 0000000000175565 R15: 0000000000000010
INFO: task syz-executor.2:29599 blocked for more than 143 seconds.
Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26800 pid:29599 tgid:29597 ppid:5088 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:747
fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:544
fuse_lookup+0x14d/0x430 fs/fuse/dir.c:424
__lookup_slow+0x24d/0x450 fs/namei.c:1694
lookup_slow fs/namei.c:1711 [inline]
walk_component+0x349/0x5a0 fs/namei.c:2002
link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329
link_path_walk fs/namei.c:2254 [inline]
path_openat+0x23f/0x2c50 fs/namei.c:3775
do_filp_open+0x1de/0x430 fs/namei.c:3809
do_sys_openat2+0x176/0x1e0 fs/open.c:1437
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1463
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff0a187b8e0
RSP: 002b:00007ff0a25c9e20 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff0a187b8e0
RDX: 0000000000000002 RSI: 00007ff0a25c9f40 RDI: 00000000ffffff9c
RBP: 00007ff0a25c9f40 R08: 0000000000000000 R09: 00000000000004ef
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006
R13: 00007ff0a25c9f3c R14: 00007ff0a25c9f40 R15: 00007ff097fff000
INFO: task syz-executor.2:29600 blocked for more than 144 seconds.
Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27680 pid:29600 tgid:29597 ppid:5088 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
request_wait_answer+0x4f4/0x8f0 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x504/0xd20 fs/fuse/dev.c:513
fuse_lookup_name+0x1df/0x580 fs/fuse/dir.c:386
fuse_lookup+0x1ad/0x430 fs/fuse/dir.c:425
__lookup_slow+0x24d/0x450 fs/namei.c:1694
lookup_slow fs/namei.c:1711 [inline]
walk_component+0x349/0x5a0 fs/namei.c:2002
link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329
link_path_walk fs/namei.c:2254 [inline]
path_openat+0x23f/0x2c50 fs/namei.c:3775
do_filp_open+0x1de/0x430 fs/namei.c:3809
do_sys_openat2+0x176/0x1e0 fs/open.c:1437
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1463
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff0a187cce9
RSP: 002b:00007ff0a25a90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ff0a199c050 RCX: 00007ff0a187cce9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007ff0a18c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff0a199c050 R15: 00007ffc206f79c8
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8cfa7d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfa7d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfa7d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
1 lock held by udevd/4509:
2 locks held by getty/4816:
#0: ffff88814a68a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900020782f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.2/5088:
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1710 [inline]
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x33b/0x5a0 fs/namei.c:2002
#1: ffff8880830d9d88 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:544
2 locks held by syz-executor.2/29599:
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1710 [inline]
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x33b/0x5a0 fs/namei.c:2002
#1: ffff8880830d9d88 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:544
2 locks held by syz-executor.2/29600:
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1710 [inline]
#0: ffff8880830d9910 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x33b/0x5a0 fs/namei.c:2002
#1: ffff8880830d9d88 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:544
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4509 Comm: udevd Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:mark_lock+0x49/0xc50 kernel/locking/lockdep.c:4639
Code: 81 ec 10 01 00 00 48 c7 44 24 30 b3 8a b5 41 48 8d 44 24 30 48 c7 44 24 38 88 9f 81 8c 48 c1 e8 03 48 c7 44 24 40 90 95 66 81 <49> 89 c7 48 01 d0 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08
RSP: 0018:ffffc9000348fab0 EFLAGS: 00000806
RAX: 1ffff92000691f5c RBX: 0000000000000001 RCX: 1ffffffff23eadd2
RDX: dffffc0000000000 RSI: ffff88807ba4eb28 RDI: ffff88807ba4e040
RBP: ffffc9000348fbf0 R08: 0000000000000000 R09: fffffbfff23e21e5
R10: ffffffff91f10f2f R11: 0000000000000003 R12: ffff88807ba4e040
R13: dffffc0000000000 R14: 0000000000000002 R15: ffff888140065000
FS: 00007f3d343cec80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b7c8d9d600 CR3: 000000007bef4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4274
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4359 [inline]
lockdep_hardirqs_on_prepare+0x139/0x420 kernel/locking/lockdep.c:4311
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
qlink_free mm/kasan/quarantine.c:171 [inline]
qlist_free_all+0xe0/0x1b0 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:763 [inline]
slab_alloc_node mm/slab.c:3237 [inline]
slab_alloc mm/slab.c:3246 [inline]
__kmem_cache_alloc_lru mm/slab.c:3423 [inline]
kmem_cache_alloc_lru+0x202/0x630 mm/slab.c:3439
__d_alloc+0x32/0xac0 fs/dcache.c:1768
d_alloc+0x4e/0x220 fs/dcache.c:1848
lookup_one_qstr_excl+0xc7/0x180 fs/namei.c:1605
do_unlinkat+0x29c/0x740 fs/namei.c:4370
__do_sys_unlink fs/namei.c:4430 [inline]
__se_sys_unlink fs/namei.c:4428 [inline]
__x64_sys_unlink+0xc8/0x110 fs/namei.c:4428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f3d33f17da7
Code: f0 ff ff 73 01 c3 48 8b 0d 7e 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe61528db8 EFLAGS: 00000202 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3d33f17da7
RDX: 0000000000000000 RSI: 00000000641381c0 RDI: 00005634d40bf0d8
RBP: 00005634d592c830 R08: 00000000641e2fe7 R09: 0000000000000001
R10: 00007ffe6153b080 R11: 0000000000000202 R12: 0000000000000bb8
R13: 00005634d592f6a0 R14: 0000000000000000 R15: 0000000000000000