INFO: task syz.2.775:9080 blocked for more than 143 seconds.
Not tainted 6.13.0-rc6-syzkaller-00231-g77a903cd8e5a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.775 state:D stack:26048 pid:9080 tgid:9080 ppid:5813 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
bdev_release+0x15a/0x6d0 block/bdev.c:1086
blkdev_release+0x15/0x20 block/fops.c:635
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbbd0385d29
RSP: 002b:00007ffe7961b4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fbbd0577ba0 RCX: 00007fbbd0385d29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fbbd0577ba0 R08: 0000000000005934 R09: 00007ffe7961b79f
R10: 00007fbbd0577ac0 R11: 0000000000000246 R12: 0000000000055483
R13: 00007ffe7961b5b0 R14: 0000000000000032 R15: ffffffffffffffff
INFO: task syz.2.775:9085 blocked for more than 144 seconds.
Not tainted 6.13.0-rc6-syzkaller-00231-g77a903cd8e5a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.775 state:D stack:27632 pid:9085 tgid:9080 ppid:5813 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
bdev_release+0x15a/0x6d0 block/bdev.c:1086
blkdev_release+0x15/0x20 block/fops.c:635
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbbd0385d29
RSP: 002b:00007fbbce1d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fbbd0576080 RCX: 00007fbbd0385d29
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000009
RBP: 00007fbbd0401b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fbbd0576080 R15: 00007ffe7961b348
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by getty/5569:
#0: ffff888036b320a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5802:
#0: ffff8880b863ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline]
#0: ffff8880b863ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:591
1 lock held by udevd/8743:
#0: ffff88814473e4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe20 block/bdev.c:903
1 lock held by syz.2.775/9080:
#0: ffff88814473e4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x15a/0x6d0 block/bdev.c:1086
1 lock held by syz.2.775/9085:
#0: ffff88814473e4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x15a/0x6d0 block/bdev.c:1086
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc6-syzkaller-00231-g77a903cd8e5a #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+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 5180 Comm: klogd Not tainted 6.13.0-rc6-syzkaller-00231-g77a903cd8e5a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:kernel_text_address+0x5/0x100 kernel/extable.c:95
Code: 90 89 44 24 04 e8 1b 3e 98 00 8b 44 24 04 eb a9 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 53 <48> 89 fb 48 83 ec 08 48 81 ff 00 00 00 81 72 18 48 81 ff 00 00 60
RSP: 0018:ffffc90003d7f530 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffffff8900eb51 RCX: 0000000000000000
RDX: 1ffff920007afeb6 RSI: ffffc90003d7fa58 RDI: ffffffff8900eb51
RBP: ffffc90003d7f5b0 R08: ffffc90003d7f59c R09: ffffffff9180b5ea
R10: ffffc90003d7f568 R11: 00000000000804c3 R12: ffffffff8185d410
R13: ffffc90003d7f628 R14: 0000000000000000 R15: ffff88807b4e0000
FS: 00007ff34cc5a500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2520f452d8 CR3: 0000000034eb2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x59/0xa0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0xa7/0x100 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
kmem_cache_alloc_node_noprof+0x223/0x3c0 mm/slub.c:4220
__alloc_skb+0x2b1/0x380 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1323 [inline]
alloc_skb_with_frags+0xe4/0x850 net/core/skbuff.c:6612
sock_alloc_send_pskb+0x7f1/0x980 net/core/sock.c:2884
unix_dgram_sendmsg+0x4b8/0x19e0 net/unix/af_unix.c:2027
sock_sendmsg_nosec net/socket.c:711 [inline]
__sock_sendmsg net/socket.c:726 [inline]
__sys_sendto+0x488/0x4f0 net/socket.c:2197
__do_sys_sendto net/socket.c:2204 [inline]
__se_sys_sendto net/socket.c:2200 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2200
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff34cdbc9b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd600a2ab8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff34cdbc9b5
RDX: 000000000000004d RSI: 0000561ab8215450 RDI: 0000000000000003
RBP: 0000561ab820d2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007ff34cf4a212 R14: 00007ffd600a2bb8 R15: 0000000000000000