INFO: task syz-executor:9432 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00125-g0c559323bbaa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24288 pid:9432 tgid:9432 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0xef5/0x5750 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:625
nfsd_umount+0x48/0xe0 fs/nfsd/nfsctl.c:1428
deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
deactivate_super+0xde/0x100 fs/super.c:506
cleanup_mnt+0x222/0x450 fs/namespace.c:1373
task_work_run+0x14e/0x250 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2368f7f327
RSP: 002b:00007ffffd7df018 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f2368ff0134 RCX: 00007f2368f7f327
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffffd7e0150
RBP: 00007ffffd7e013c R08: 0000000000000000 R09: 00007f2369cb6080
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffffd7e0150
R13: 00007f2368ff0134 R14: 000000000004585c R15: 00007ffffd7e0190
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8ddc3178 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
1 lock held by khungtaskd/30:
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:5/148:
2 locks held by getty/4983:
#0: ffff88802ebb30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
5 locks held by kworker/u8:14/6940:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90004717d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8faace90 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
#3: ffffffff8fac2aa8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x8f/0x9b0 net/core/dev.c:11934
#4: ffffffff8ddc3178 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
2 locks held by kworker/u8:56/7371:
#0: ffff8881416cc948 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90003f87d80 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
2 locks held by syz-executor/9432:
#0: ffff88802d9d80e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802d9d80e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802d9d80e0 (&type->s_umount_key#54){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:505
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:625
2 locks held by syz.3.939/9747:
#0: ffffffff8fb60b10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.0.1091/10355:
#0: ffffffff8fb60b10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.1.1098/10379:
#0: ffff88807a7740e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807a7740e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807a7740e0 (&type->s_umount_key#54){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:505
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:625
2 locks held by syz-executor/10593:
#0: ffff88804b6140e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88804b6140e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88804b6140e0 (&type->s_umount_key#54){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:505
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:625
2 locks held by syz.2.1194/10956:
#0: ffffffff8fb60b10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.3.1331/11524:
#0: ffffffff8fb60b10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.0.1343/11569:
#0: ffffffff8fb60b10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d19e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.0.1676/12885:
2 locks held by syz.2.1680/12893:
3 locks held by syz.2.1680/12894:
2 locks held by syz.2.1680/12898:
2 locks held by syz.0.1682/12909:
2 locks held by syz.3.1683/12908:
1 lock held by syz.3.1688/12921:
#0: ffffffff8fac2aa8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x612/0x4960 drivers/net/tun.c:3121
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00125-g0c559323bbaa #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+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 6946 Comm: kworker/u8:20 Not tainted 6.12.0-rc1-syzkaller-00125-g0c559323bbaa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:__sanitizer_cov_trace_switch+0x5a/0x90 kernel/kcov.c:352
Code: 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 4c 89 e2 4c 89 ef 48 83 c3 01 48 8b 4c 24 28 e8 8c fd ff ff 49 39 de 75 e2 5b <5d> 41 5c 41 5d 41 5e c3 cc cc cc cc 48 83 f8 40 41 bd 07 00 00 00
RSP: 0018:ffffc9000463f670 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000006 RCX: ffffffff8a9067a1
RDX: ffff88802dd9da00 RSI: 00000000000000f4 RDI: 0000000000000001
RBP: ffffffff8c9dfb80 R08: 0000000000000001 R09: 00000000000000f4
R10: 0000000000000000 R11: 000000000000004f R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000020 R15: ffff88806b3bc975
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1bf5908178 CR3: 000000000db7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
_ieee802_11_parse_elems_full+0x271/0x4300 net/mac80211/parse.c:293
ieee802_11_parse_elems_full+0x8bc/0x1630 net/mac80211/parse.c:984
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2383 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2390 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1575 [inline]
ieee80211_ibss_rx_queued_mgmt+0xc54/0x3030 net/mac80211/ibss.c:1606
ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline]
ieee80211_iface_work+0xc0b/0xf00 net/mac80211/iface.c:1657
cfg80211_wiphy_work+0x3d9/0x550 net/wireless/core.c:440
process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244