INFO: task syz.3.531:11492 blocked for more than 143 seconds.
Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.531 state:D stack:23584 pid:11492 tgid:11476 ppid:10166 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 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
exfat_lookup+0x143/0x1e70 fs/exfat/namei.c:726
__lookup_slow+0x28c/0x3f0 fs/namei.c:1791
lookup_slow+0x53/0x70 fs/namei.c:1808
walk_component+0x2e1/0x410 fs/namei.c:2112
lookup_last fs/namei.c:2610 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2634
filename_lookup+0x2a3/0x670 fs/namei.c:2663
user_path_at+0x3a/0x60 fs/namei.c:3070
do_mount fs/namespace.c:3844 [inline]
__do_sys_mount fs/namespace.c:4057 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:4034
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: 0033:0x7ff15437fed9
RSP: 002b:00007ff1521f6058 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff154546080 RCX: 00007ff15437fed9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020001000
RBP: 00007ff1543f3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000181000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff154546080 R15: 00007ffc8e2ec058
INFO: task syz.3.531:11495 blocked for more than 144 seconds.
Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.531 state:D stack:23840 pid:11495 tgid:11476 ppid:10166 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 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
exfat_lookup+0x143/0x1e70 fs/exfat/namei.c:726
__lookup_slow+0x28c/0x3f0 fs/namei.c:1791
lookup_slow+0x53/0x70 fs/namei.c:1808
walk_component+0x2e1/0x410 fs/namei.c:2112
lookup_last fs/namei.c:2610 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2634
filename_lookup+0x2a3/0x670 fs/namei.c:2663
user_path_at+0x3a/0x60 fs/namei.c:3070
__do_sys_move_mount fs/namespace.c:4254 [inline]
__se_sys_move_mount+0x1ac/0xd20 fs/namespace.c:4226
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: 0033:0x7ff15437fed9
RSP: 002b:00007ff1521d5058 EFLAGS: 00000246 ORIG_RAX: 00000000000001ad
RAX: ffffffffffffffda RBX: 00007ff154546160 RCX: 00007ff15437fed9
RDX: ffffffffffffffff RSI: 0000000020008080 RDI: ffffffffffffff9c
RBP: 00007ff1543f3cc8 R08: 0000000000000141 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff154546160 R15: 00007ffc8e2ec058
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffff8880b873e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
1 lock held by khungtaskd/30:
#0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by kworker/u8:2/35:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc90000ab7d00 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000ab7d00 ((reaper_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
2 locks held by kworker/u8:6/1327:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc900048efd00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900048efd00 (connector_reaper_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
2 locks held by getty/5570:
#0: ffff88814d7a30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000330b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
5 locks held by syz.3.531/11478:
2 locks held by syz.3.531/11492:
#0: ffff88805f5a3c90 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:828 [inline]
#0: ffff88805f5a3c90 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1807
#1: ffff88807e9340e8 (&sbi->s_lock){+.+.}-{4:4}, at: exfat_lookup+0x143/0x1e70 fs/exfat/namei.c:726
2 locks held by syz.3.531/11495:
#0: ffff88805f5a3c90 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:828 [inline]
#0: ffff88805f5a3c90 (&sb->s_type->i_mutex_key#25){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1807
#1: ffff88807e9340e8 (&sbi->s_lock){+.+.}-{4:4}, at: exfat_lookup+0x143/0x1e70 fs/exfat/namei.c:726
2 locks held by syz.9.620/12396:
#0: ffff888068eea0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888068eea0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88807e9340e8 (&sbi->s_lock){+.+.}-{4:4}, at: exfat_sync_fs+0xb0/0x160 fs/exfat/super.c:56
2 locks held by syz.6.709/13367:
#0: ffff888068eea0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888068eea0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88807e9340e8 (&sbi->s_lock){+.+.}-{4:4}, at: exfat_sync_fs+0xb0/0x160 fs/exfat/super.c:56
1 lock held by syz.3.716/13404:
4 locks held by syz.2.715/13419:
4 locks held by rm/13442:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:unwind_next_frame+0x0/0x22d0 arch/x86/kernel/unwind_orc.c:469
Code: cc cc 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 91 4c 89 f7 e8 63 8a bb 00 eb 87 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 81 ec 98 00 00 00 49
RSP: 0018:ffffc900001169d8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc900001169e0 RCX: ffffffff91773000
RDX: dffffc0000000000 RSI: ffffffff8b16f34b RDI: ffffc900001169e0
RBP: ffffc90000116a70 R08: 0000000000000007 R09: ffffc90000116ad0
R10: ffffc90000116a30 R11: ffffffff818b36a0 R12: ffff88801bee5a00
R13: ffffffff818b36a0 R14: ffffc90000116ac0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa7b8f0d000 CR3: 000000006b8e2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2338 [inline]
slab_free mm/slub.c:4598 [inline]
kfree+0x196/0x430 mm/slub.c:4746
ieee80211_inform_bss+0xbb2/0x1080 net/mac80211/scan.c:160
rdev_inform_bss net/wireless/rdev-ops.h:418 [inline]
cfg80211_inform_single_bss_data+0xec1/0x2070 net/wireless/scan.c:2334
cfg80211_inform_bss_data+0x3ce/0x5e80 net/wireless/scan.c:3189
cfg80211_inform_bss_frame_data+0x3bb/0x720 net/wireless/scan.c:3284
ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1101 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1580 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1969/0x2d70 net/mac80211/ibss.c:1607
ieee80211_iface_process_skb net/mac80211/iface.c:1616 [inline]
ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1670
cfg80211_wiphy_work+0x2db/0x480 net/wireless/core.c:440
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244