INFO: task syz.2.958:10222 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00349-g8f602276d390 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.958 state:D stack:27248 pid:10222 tgid:10216 ppid:6970 flags:0x00000004
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_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg net/socket.c:744 [inline]
____sys_sendmsg+0x9ae/0xb40 net/socket.c:2602
___sys_sendmsg+0x135/0x1e0 net/socket.c:2656
__sys_sendmsg+0x117/0x1f0 net/socket.c:2685
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f744897dff9
RSP: 002b:00007f744969a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7448b36058 RCX: 00007f744897dff9
RDX: 0000000000008004 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007f74489f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7448b36058 R15: 00007ffefa8fd128
Showing all locks held in the system:
3 locks held by kworker/u8:1/12:
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
2 locks held by kworker/1:2/938:
#0: ffff88802e570548 ((wq_completion)smc_hs_wq){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc900039afd80 ((work_completion)(&smc->connect_work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
2 locks held by getty/4991:
#0: ffff88802e6870a0 (&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
3 locks held by syz-executor/5223:
#0: ffff888028613730 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:704 [inline]
#0: ffff888028613730 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6228
#1: ffff88814aeb8518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162
#2: ffff8880790554d8 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:870 [inline]
#2: ffff8880790554d8 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_page_mkwrite+0x37e/0x1760 fs/ext4/inode.c:6104
3 locks held by kworker/1:4/5278:
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204
#1: ffffc90004037d80 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205
#2: ffffffff8ddc2fc0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:4562
2 locks held by kworker/u8:32/5757:
2 locks held by syz-executor/9453:
#0: ffff888063cf40e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888063cf40e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888063cf40e0 (&type->s_umount_key#50){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:505
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:625
2 locks held by syz-executor/9581:
#0: ffff88801ee920e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88801ee920e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88801ee920e0 (&type->s_umount_key#50){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:505
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:625
2 locks held by syz.2.958/10217:
#0: ffffffff8fb61190 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.2.958/10222:
#0: ffffffff8fb61190 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.2.1024/10535:
#0: ffffffff8fb61190 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz.2.1050/10801:
#0: ffffffff8fb61190 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_get_doit+0x1c7/0x740 fs/nfsd/nfsctl.c:1755
2 locks held by syz.0.1105/11048:
#0: ffffffff8fb61190 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_threads_set_doit+0x694/0xbe0 fs/nfsd/nfsctl.c:1671
2 locks held by syz-executor/11152:
#0: ffff888144a840e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888144a840e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888144a840e0 (&type->s_umount_key#50){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:505
#1: ffffffff8e1d1868 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:625
3 locks held by syz.1.1194/11734:
5 locks held by syz.1.1197/11748:
2 locks held by syz.2.1229/11881:
2 locks held by syz.2.1233/11893:
4 locks held by syz.0.1245/11940:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00349-g8f602276d390 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.12.0-rc1-syzkaller-00349-g8f602276d390 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:mark_held_locks+0xa6/0xe0 kernel/locking/lockdep.c:4309
Code: 7f 04 84 c0 75 4e 0f b6 46 22 89 c2 83 e2 03 80 fa 01 89 ea 83 da ff a8 04 74 0c 4c 89 e7 e8 f1 f2 ff ff 85 c0 74 12 83 c3 01 <41> 39 9c 24 d8 0a 00 00 7f a9 b8 01 00 00 00 48 83 c4 08 5b 5d 41
RSP: 0018:ffffc90000117940 EFLAGS: 00000006
RAX: 0000000000000001 RBX: 0000000000000003 RCX: 1ffffffff2d36b27
RDX: 0000000000000001 RSI: 0000000000000040 RDI: ffffffff969b5938
RBP: 0000000000000006 R08: 0000000000000000 R09: fffffbfff2d31595
R10: ffffffff9698acaf R11: 0000000000000000 R12: ffff88801cec5a00
R13: dffffc0000000000 R14: ffff88801cec64e0 R15: ffff888073117c50
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe4b0f2f40 CR3: 000000007ec64000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4347 [inline]
lockdep_hardirqs_on_prepare+0x27a/0x420 kernel/locking/lockdep.c:4406
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
__local_bh_enable_ip+0xa4/0x120 kernel/softirq.c:387
spin_unlock_bh include/linux/spinlock.h:396 [inline]
cfg80211_put_bss+0x1b4/0x280 net/wireless/scan.c:3308
ieee80211_rx_bss_put net/mac80211/scan.c:37 [inline]
ieee80211_rx_bss_put+0x43/0x60 net/mac80211/scan.c:32
ieee80211_rx_bss_info net/mac80211/ibss.c:1172 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1ace/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