INFO: task syz-executor.0:6151 blocked for more than 143 seconds.
Not tainted 6.13.0-rc5-syzkaller-g0bc21e701a6f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24128 pid:6151 tgid:6151 ppid:6131 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
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x7e7/0xee0 kernel/locking/mutex.c:735
bdev_release+0x17e/0x700 block/bdev.c:1086
blkdev_release+0x15/0x20 block/fops.c:635
__fput+0x23e/0xa50 fs/file_table.c:450
__do_sys_close fs/open.c:1554 [inline]
__se_sys_close fs/open.c:1539 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1539
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: 0033:0x7f4d8f07890a
RSP: 002b:00007ffc5db66420 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f4d8f07890a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f4d8f18d960 R08: 0000001b32e60000 R09: 7fffffffffffffff
R10: 00007f4d90259038 R11: 0000000000000293 R12: 0000000000017432
R13: 00007f4d8f18bf6c R14: 0000000000017157 R15: 00007f4d8f590000
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by kworker/0:2/57:
1 lock held by klogd/5189:
#0: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
2 locks held by getty/5587:
#0: ffff8880315b30a0 (&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 udevd/6132:
#0: ffff8880255d74c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf0/0xc50 block/bdev.c:903
1 lock held by syz-executor.0/6151:
#0: ffff8880255d74c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x17e/0x700 block/bdev.c:1086
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc5-syzkaller-g0bc21e701a6f #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: 5182 Comm: syslogd Not tainted 6.13.0-rc5-syzkaller-g0bc21e701a6f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0x90 kernel/kcov.c:322
Code: 0a 18 4c 89 44 0a 20 e9 65 c8 50 0a 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <4c> 8b 04 24 65 48 8b 0c 25 00 d6 03 00 65 8b 05 30 5d 64 7e 25 00
RSP: 0018:ffffc90004edf830 EFLAGS: 00000293
RAX: ffffffff814d3fa1 RBX: ffff888011c9ac00 RCX: ffff88807e63da00
RDX: 0000000000000000 RSI: ffff888011c9ac00 RDI: ffffffff7fffffff
RBP: 000000000021a008 R08: ffffffff942a493f R09: 1ffffffff2854927
R10: dffffc0000000000 R11: fffffbfff2854928 R12: ffff88801ac4f140
R13: ffff888011c9ac00 R14: ffff888011c9ac00 R15: ffff88801ac4f140
FS: 00007f27f6ced380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055acdb4e8600 CR3: 0000000031ff8000 CR4: 0000000000350ef0
Call Trace:
__phys_addr+0x23/0x170 arch/x86/mm/physaddr.c:20
virt_to_folio include/linux/mm.h:1295 [inline]
virt_to_slab mm/slab.h:211 [inline]
check_slab_allocation+0x16/0x110 mm/kasan/common.c:219
kasan_slab_pre_free include/linux/kasan.h:198 [inline]
slab_free_hook mm/slub.c:2298 [inline]
slab_free mm/slub.c:4613 [inline]
kfree+0x147/0x430 mm/slub.c:4761
skb_kfree_head net/core/skbuff.c:1086 [inline]
skb_free_head net/core/skbuff.c:1098 [inline]
skb_release_data+0x6a0/0x8a0 net/core/skbuff.c:1125
skb_release_all net/core/skbuff.c:1190 [inline]
__kfree_skb net/core/skbuff.c:1204 [inline]
consume_skb+0x9f/0xf0 net/core/skbuff.c:1436
__unix_dgram_recvmsg+0xcea/0x12f0 net/unix/af_unix.c:2521
sock_recvmsg_nosec net/socket.c:1033 [inline]
sock_recvmsg+0x231/0x280 net/socket.c:1055
sock_read_iter+0x2c4/0x3d0 net/socket.c:1125
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x993/0xb70 fs/read_write.c:565
ksys_read+0x18f/0x2b0 fs/read_write.c:708
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: 0033:0x7f27f6e41b6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe90a3e488 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f27f6e41b6a
RDX: 00000000000000ff RSI: 00005563b68cb950 RDI: 0000000000000000
RBP: 00005563b68cb910 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f27f6fe03a3 R11: 0000000000000246 R12: 00005563b68cb99a
R13: 00005563b68cb950 R14: 0000000000000000 R15: 00007f27f7024a80