INFO: task syz-executor.3:3670 blocked for more than 143 seconds.
Not tainted 6.1.0-rc7-syzkaller-00211-g0ba09b173387 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:18576 pid:3670 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8c9/0xd70 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
schedule_timeout+0x1aa/0x2f0 kernel/time/timer.c:1935
gfs2_gl_hash_clear+0x198/0x300 fs/gfs2/glock.c:2263
gfs2_put_super+0x862/0x8d0 fs/gfs2/super.c:620
generic_shutdown_super+0x130/0x310 fs/super.c:492
kill_block_super+0x79/0xd0 fs/super.c:1428
deactivate_locked_super+0xa7/0xf0 fs/super.c:332
cleanup_mnt+0x494/0x520 fs/namespace.c:1186
task_work_run+0x243/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7fff08d547
RSP: 002b:00007fff69bac028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7fff08d547
RDX: 00007fff69bac0fc RSI: 000000000000000a RDI: 00007fff69bac0f0
RBP: 00007fff69bac0f0 R08: 00000000ffffffff R09: 00007fff69babec0
R10: 0000555555c27873 R11: 0000000000000246 R12: 00007f7fff0e6b24
R13: 00007fff69bad1b0 R14: 0000555555c27810 R15: 00007fff69bad1f0
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d127330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d127b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d127160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3314:
#0: ffff88814b3d5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/3670:
#0: ffff88801d2100e0 (&type->s_umount_key#80){++++}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362
2 locks held by kworker/u4:12/29835:
#0: ffff8880b9839dd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffff8880b9827788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x611/0x9a0 kernel/sched/psi.c:909
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc7-syzkaller-00211-g0ba09b173387 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1104 Comm: kworker/u4:5 Not tainted 6.1.0-rc7-syzkaller-00211-g0ba09b173387 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: bat_events batadv_mcast_mla_update
RIP: 0010:unwind_next_frame+0x1968/0x24c0 arch/x86/kernel/unwind_orc.c:605
Code: 00 48 01 c3 4c 89 e7 48 89 de 4c 89 f2 eb 42 49 8d 5f 02 49 83 c7 03 48 89 d8 48 c1 e8 03 42 8a 04 08 84 c0 0f 85 06 0a 00 00 <4c> 89 f8 48 c1 e8 03 42 8a 04 08 84 c0 0f 85 1c 0a 00 00 48 0f bf
RSP: 0018:ffffc90004c87538 EFLAGS: 00000246
RAX: 1ffffffff1df4b00 RBX: ffffffff8efa5e9a RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000001 RDI: ffffc90004c876e0
RBP: 1ffffffff1df4bd3 R08: dffffc0000000000 R09: dffffc0000000000
R10: fffff52000990edc R11: 1ffff92000990eda R12: ffffc90004c87680
R13: ffffffff8efa5e9c R14: ffffc90004c876d0 R15: ffffffff8efa5e9b
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558cfed2d240 CR3: 0000000073d8b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__unwind_start+0x5b7/0x760 arch/x86/kernel/unwind_orc.c:717
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x76/0xe0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x104/0x1e0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x3d/0x60 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:371 [inline]
__kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380
kmalloc include/linux/slab.h:553 [inline]
batadv_mcast_mla_softif_get_ipv6 net/batman-adv/multicast.c:447 [inline]
batadv_mcast_mla_softif_get net/batman-adv/multicast.c:505 [inline]
__batadv_mcast_mla_update net/batman-adv/multicast.c:879 [inline]
batadv_mcast_mla_update+0x1597/0x3a90 net/batman-adv/multicast.c:916
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306