INFO: task syz-executor.1:5099 blocked for more than 143 seconds.
Not tainted 6.3.0-rc5-syzkaller-00032-g99ddf2254feb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:20952 pid:5099 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6625
schedule+0xc3/0x180 kernel/sched/core.c:6701
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
gfs2_gl_hash_clear+0x1a3/0x310 fs/gfs2/glock.c:2198
gfs2_put_super+0x827/0x890 fs/gfs2/super.c:633
generic_shutdown_super+0x134/0x340 fs/super.c:500
kill_block_super+0x7e/0xe0 fs/super.c:1407
deactivate_locked_super+0xa4/0x110 fs/super.c:331
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb91a48d5d7
RSP: 002b:00007fffd24444c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb91a48d5d7
RDX: 00007fffd244459a RSI: 000000000000000a RDI: 00007fffd2444590
RBP: 00007fffd2444590 R08: 00000000ffffffff R09: 00007fffd2444360
R10: 00005555573b48b3 R11: 0000000000000246 R12: 00007fb91a4e6cdc
R13: 00007fffd2445650 R14: 00005555573b4810 R15: 00007fffd2445690
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25530 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf25d30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf25360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4742:
#0: ffff88814b258098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.1/5099:
#0: ffff88807ccf40e0 (&type->s_umount_key#60){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc5-syzkaller-00032-g99ddf2254feb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2846 Comm: kworker/u4:6 Not tainted 6.3.0-rc5-syzkaller-00032-g99ddf2254feb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: phy6 ieee80211_iface_work
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3745 [inline]
RIP: 0010:validate_chain+0x185/0x58e0 kernel/locking/lockdep.c:3800
Code: 8d 1c c5 40 b1 19 90 48 89 d8 48 c1 e8 03 48 89 44 24 58 42 80 3c 20 00 74 08 48 89 df e8 63 52 75 00 48 89 5c 24 20 48 8b 1b <48> 85 db 74 48 48 83 c3 f8 74 42 4c 8d 7b 18 4c 89 f8 48 c1 e8 03
RSP: 0018:ffffc9000bf07480 EFLAGS: 00000046
RAX: 1ffffffff2042eba RBX: ffffffff9039b9a8 RCX: ffffffff816ac839
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff902db1c0
RBP: ffffc9000bf07730 R08: dffffc0000000000 R09: fffffbfff205b639
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888028e6e268 R14: d9f84860eb5b131f R15: 1ffff110051cdc4d
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bf36f08600 CR3: 000000000cd30000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5056
lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:984 [inline]
debug_check_no_obj_freed+0xd6/0x650 lib/debugobjects.c:1027
slab_free_hook mm/slub.c:1756 [inline]
slab_free_freelist_hook mm/slub.c:1807 [inline]
slab_free mm/slub.c:3787 [inline]
kmem_cache_free+0x246/0x520 mm/slub.c:3809
skb_kfree_head net/core/skbuff.c:855 [inline]
skb_free_head net/core/skbuff.c:870 [inline]
skb_release_data+0x4ee/0x810 net/core/skbuff.c:899
skb_release_all net/core/skbuff.c:964 [inline]
__kfree_skb net/core/skbuff.c:978 [inline]
kfree_skb_reason+0x186/0x340 net/core/skbuff.c:1011
kfree_skb include/linux/skbuff.h:1225 [inline]
ieee80211_iface_work+0x264/0xd00 net/mac80211/iface.c:1639
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308