INFO: task syz.2.18:5389 blocked for more than 143 seconds.
Not tainted 5.15.180-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.18 state:D
stack:23808 pid: 5389 ppid: 4976 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_timeout+0xac/0x300 kernel/time/timer.c:1890
do_wait_for_common+0x2d9/0x480 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
kthread_stop+0x178/0x580 kernel/kthread.c:666
gfs2_make_fs_ro+0x14d/0x5f0 fs/gfs2/super.c:533
signal_our_withdraw fs/gfs2/util.c:166 [inline]
gfs2_withdraw+0x5fb/0x14e0 fs/gfs2/util.c:343
gfs2_metatype_check_ii+0x75/0x90 fs/gfs2/util.c:520
gfs2_metatype_check_i fs/gfs2/util.h:129 [inline]
gfs2_quota_init+0xe06/0x1110 fs/gfs2/quota.c:1406
gfs2_make_fs_rw+0x436/0x5b0 fs/gfs2/super.c:155
gfs2_fill_super+0x23e8/0x2750 fs/gfs2/ops_fstype.c:1276
get_tree_bdev+0x3fe/0x620 fs/super.c:1325
gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x2ba/0xb40 fs/namespace.c:3012
do_mount fs/namespace.c:3355 [inline]
__do_sys_mount fs/namespace.c:3563 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc41238b90a
RSP: 002b:00007fc4115fae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc4115faef0 RCX: 00007fc41238b90a
RDX: 0000200000000400 RSI: 0000200000012500 RDI: 00007fc4115faeb0
RBP: 0000200000000400 R08: 00007fc4115faef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
R13: 00007fc4115faeb0 R14: 00000000000125bb R15: 00002000000004c0
INFO: task gfs2_quotad:5395 blocked for more than 144 seconds.
Not tainted 5.15.180-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:gfs2_quotad state:D stack:26136 pid: 5395 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
bit_wait+0xe/0xc0 kernel/sched/wait_bit.c:199
__wait_on_bit+0xb9/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d0/0x250 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:76 [inline]
__gfs2_glock_dq+0x699/0x9e0 fs/gfs2/glock.c:1588
gfs2_glock_dq fs/gfs2/glock.c:1652 [inline]
gfs2_glock_dq_uninit+0x51/0x110 fs/gfs2/glock.c:1672
gfs2_statfs_sync+0x7d5/0x860 fs/gfs2/super.c:310
quotad_check_timeo fs/gfs2/quota.c:1519 [inline]
gfs2_quotad+0x3a8/0x900 fs/gfs2/quota.c:1581
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0:
ffffffff8cb1f560
(rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/3546:
#0:
ffff888020fb8518
(
&disk->open_mutex
){+.+.}-{3:3}
, at: blkdev_get_by_dev+0x14d/0xa50 block/bdev.c:820
2 locks held by getty/3920:
#0:
ffff88802c637098
(
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1:
ffffc900025ae2e8
(
&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/1:17/4266:
#0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000316fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8cb23b28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#2: ffffffff8cb23b28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
2 locks held by kworker/1:18/4267:
#0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000317fd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
1 lock held by syz-executor/4981:
#0: ffff888147110468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
1 lock held by syz.2.18/5389:
#0: ffff888077f7c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
1 lock held by syz.5.316/6283:
#0: ffff888147116468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
2 locks held by syz.0.317/6285:
#0: ffff888020fa4518 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:915
#1: ffff8880210a7468 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:2070
2 locks held by syz.4.318/6287:
#0: ffff888020fb7518 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:915
#1: ffff888147113468 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:2070
1 lock held by syz.1.319/6289:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:369
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4241 Comm: kworker/u4:5 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: phy17 ieee80211_iface_work
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:52 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline]
RIP: 0010:unwind_next_frame+0x51d/0x1fa0 arch/x86/kernel/unwind_orc.c:448
Code: 49 89 fe 48 89 e8 4c 29 f0 48 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 46 48 89 d8 48 c1 e8 03 0f b6 04 10 <84> c0 75 27 48 63 03 48 01 d8 48 8d 4b 04 4c 39 e8 4c 0f 46 f1 48
RSP: 0018:ffffc900030ff668 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffffff8e1feb68 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8e8c47d2 RDI: ffffffff8e1feb4c
RBP: ffffffff8e1feb68 R08: 000000000000000c R09: ffffc900030ff810
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8e1feb64
R13: ffffffff81ca8c9e R14: ffffffff8e1feb68 R15: ffffc900030ff720
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2cf282d000 CR3: 000000002b485000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0x91/0x1f0 mm/slub.c:3515
kfree_skb include/linux/skbuff.h:1118 [inline]
ieee80211_iface_work+0x251/0xcc0 net/mac80211/iface.c:1512
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287