INFO: task syz-executor:9445 blocked for more than 143 seconds.
Not tainted 6.16.0-rc2-syzkaller-00378-gb67ec639010f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21704 pid:9445 tgid:9445 ppid:1 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16a2/0x4cb0 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x724/0xe80 kernel/locking/mutex.c:747
lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
jfs_umount+0x2ef/0x3c0 fs/jfs/jfs_umount.c:114
jfs_put_super+0x8c/0x190 fs/jfs/super.c:194
generic_shutdown_super+0x135/0x2c0 fs/super.c:643
kill_block_super+0x44/0x90 fs/super.c:1755
deactivate_locked_super+0xb9/0x130 fs/super.c:474
cleanup_mnt+0x425/0x4c0 fs/namespace.c:1417
task_work_run+0x1d1/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbf1578fc57
RSP: 002b:00007ffe1b6b0718 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fbf15810925 RCX: 00007fbf1578fc57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe1b6b07d0
RBP: 00007ffe1b6b07d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe1b6b1860
R13: 00007fbf15810925 R14: 00000000000514bc R15: 00007ffe1b6b18a0
Showing all locks held in the system:
2 locks held by kworker/u8:0/12:
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffff8880b8623f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39e/0x6d0 kernel/sched/psi.c:987
1 lock held by khungtaskd/31:
#0: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
2 locks held by kworker/u8:3/49:
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90000b97bc0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000b97bc0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
2 locks held by getty/5577:
#0: ffff888030ddb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
1 lock held by syz.5.157/6984:
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
2 locks held by syz-executor/8308:
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570fe8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/9445:
#0: ffff88806ca180e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88806ca180e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff88806ca180e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570fe8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz.5.377/9508:
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
2 locks held by syz-executor/10293:
#0: ffff8880476a60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff8880476a60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff8880476a60e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570fe8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz.6.496/10393:
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
2 locks held by syz-executor/10396:
#0: ffff888059cb40e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff888059cb40e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff888059cb40e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570fe8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/10955:
#0: ffff8880598960e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff8880598960e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff8880598960e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570fe8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/11738:
#0: ffff888080ece0e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff888080ece0e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff888080ece0e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
#1: ffffffff8e570fe8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz.6.671/11961:
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff888061ec60e0 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
1 lock held by syz.9.708/12252:
#0: ffff888059cb40e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
#0: ffff888059cb40e0 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
2 locks held by rm/12322:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc2-syzkaller-00378-gb67ec639010f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:470
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 12200 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller-00378-gb67ec639010f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:io_serial_out+0x7c/0xc0 drivers/tty/serial/8250/8250_port.c:416
Code: 32 80 fc 44 89 f9 d3 e5 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 2c 8a e1 fc 41 03 2e 89 d8 89 ea ee <5b> 41 5c 41 5e 41 5f 5d e9 87 f8 21 06 cc 44 89 f9 80 e1 07 38 c1
RSP: 0018:ffffc9000ba2e310 EFLAGS: 00000002
RAX: 0000000000000032 RBX: 0000000000000032 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00000000000003f8 R08: ffff888024790237 R09: 1ffff110048f2046
R10: dffffc0000000000 R11: ffffffff85401910 R12: dffffc0000000000
R13: ffffffff99a8f8cd R14: ffffffff99d94520 R15: 0000000000000000
FS: 0000555582748500(0000) GS:ffff888125c85000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1792747eb8 CR3: 000000003afbc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_port_out include/linux/serial_core.h:798 [inline]
serial8250_console_putchar drivers/tty/serial/8250/8250_port.c:3306 [inline]
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:-1 [inline]
serial8250_console_write+0x1410/0x1ba0 drivers/tty/serial/8250/8250_port.c:3456
console_emit_next_record kernel/printk/printk.c:3138 [inline]
console_flush_all+0x728/0xc40 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xc4/0x270 kernel/printk/printk.c:3325
vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450
_printk+0xcf/0x120 kernel/printk/printk.c:2475
netdev_info+0x10a/0x160 net/core/dev.c:12564
__dev_set_promiscuity+0x307/0x740 net/core/dev.c:9270
__dev_set_rx_mode+0x17c/0x260 net/core/dev.c:-1
dev_uc_add+0xc8/0x120 net/core/dev_addr_lists.c:693
macsec_dev_open+0xd9/0x530 drivers/net/macsec.c:3634
__dev_open+0x470/0x880 net/core/dev.c:1683
__dev_change_flags+0x1ea/0x6d0 net/core/dev.c:9458
netif_change_flags+0x88/0x1a0 net/core/dev.c:9521
do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3141
rtnl_changelink net/core/rtnetlink.c:3759 [inline]
__rtnl_newlink net/core/rtnetlink.c:3918 [inline]
rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:727
__sys_sendto+0x3bd/0x520 net/socket.c:2180
__do_sys_sendto net/socket.c:2187 [inline]
__se_sys_sendto net/socket.c:2183 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2183
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb1a1907bc
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007ffcfb06aca0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fdb1aee4620 RCX: 00007fdb1a1907bc
RDX: 000000000000002c RSI: 00007fdb1aee4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffcfb06acf4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fdb1aee4670 R15: 0000000000000000