INFO: task syz-executor:5965 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller-00176-g20371ba12063 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20464 pid:5965 tgid:5965 ppid:1 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
io_schedule+0x8d/0x110 kernel/sched/core.c:7401
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
folio_wait_writeback+0xe7/0x1e0 mm/page-writeback.c:3189
__filemap_fdatawait_range+0x181/0x410 mm/filemap.c:532
filemap_fdatawait_range+0x25/0x40 mm/filemap.c:559
filemap_fdatawait include/linux/pagemap.h:48 [inline]
__writeback_single_inode+0x1f0/0x10b0 fs/fs-writeback.c:1661
writeback_single_inode+0x21b/0x7a0 fs/fs-writeback.c:1772
write_inode_now+0x1d1/0x260 fs/fs-writeback.c:2822
iput_final fs/inode.c:1825 [inline]
iput+0x5d7/0x930 fs/inode.c:1864
nilfs_dispose_list+0x51d/0x5c0 fs/nilfs2/segment.c:820
nilfs_segctor_destroy fs/nilfs2/segment.c:2797 [inline]
nilfs_detach_log_writer+0x7e3/0xbe0 fs/nilfs2/segment.c:2869
nilfs_put_super+0x4d/0x160 fs/nilfs2/super.c:498
generic_shutdown_super+0x136/0x2d0 fs/super.c:642
kill_block_super+0x44/0x90 fs/super.c:1696
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24f/0x310 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
__do_sys_exit_group kernel/exit.c:1042 [inline]
__se_sys_exit_group kernel/exit.c:1040 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1040
x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
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: 0033:0x7f604df79ef9
RSP: 002b:00007fff39410168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f604dfe783c RCX: 00007f604df79ef9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000005 R08: 00007fff3940df07 R09: 00007fff39411420
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff39411420
R13: 00007f604dfe77dc R14: 000055555576d4a8 R15: 00007fff394124e0
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
3 locks held by kworker/u8:6/1052:
#0: ffff88802a36f148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88802a36f148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc9000436fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc9000436fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa78148 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194
2 locks held by getty/4974:
#0: ffff88802abc70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/0:3/5220:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900036cfd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc900036cfd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88807082d240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
3 locks held by kworker/0:5/5274:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900039a7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc900039a7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88802a835240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
1 lock held by syz-executor/5965:
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
1 lock held by syz.0.210/7252:
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.0.251/7730:
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.0.275/8190:
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.1.293/8193:
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88802369e0e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
6 locks held by syz-executor/8305:
1 lock held by syz-executor/8306:
#0: ffffffff8fa78148 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa78148 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
1 lock held by syz-executor/8422:
#0: ffffffff8fa78148 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa78148 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
1 lock held by syz-executor/8431:
#0: ffffffff8fa78148 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa78148 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
2 locks held by syz.4.300/8623:
3 locks held by dhcpcd-run-hook/8664:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller-00176-g20371ba12063 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
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
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8305 Comm: syz-executor Not tainted 6.11.0-rc5-syzkaller-00176-g20371ba12063 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:unwind_done arch/x86/include/asm/unwind.h:50 [inline]
RIP: 0010:unwind_next_frame+0xa9/0x2a00 arch/x86/kernel/unwind_orc.c:475
Code: e8 03 48 89 44 24 08 42 0f b6 04 28 84 c0 0f 85 6a 20 00 00 44 8b 75 00 31 ff 44 89 f6 e8 2f 68 52 00 44 89 b4 24 8c 00 00 00 <45> 85 f6 0f 84 8a 00 00 00 48 89 5c 24 50 bf 01 00 00 00 e8 af d6
RSP: 0018:ffffc90000006868 EFLAGS: 00000246
RAX: 0000000000000100 RBX: ffffc90000006978 RCX: ffff88802af8bc00
RDX: ffff88802af8bc00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000006940 R08: ffffffff814127f1 R09: ffffc90000006a30
R10: 0000000000000003 R11: ffffffff817f2eb0 R12: ffff88802af8bc00
R13: dffffc0000000000 R14: 0000000000000001 R15: ffffffff8bc014ca
FS: 000055558aa8b500(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e46995c000 CR3: 0000000070ab0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
arch_stack_walk+0x151/0x1b0 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
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
fill_pool lib/debugobjects.c:169 [inline]
debug_objects_fill_pool+0x63f/0x9b0 lib/debugobjects.c:616
debug_object_activate+0x135/0x510 lib/debugobjects.c:705
debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
__call_rcu_common kernel/rcu/tree.c:3091 [inline]
call_rcu+0x97/0xa70 kernel/rcu/tree.c:3210
refdst_drop include/net/dst.h:263 [inline]
skb_dst_drop include/net/dst.h:275 [inline]
skb_release_head_state+0x73/0x250 net/core/skbuff.c:1172
skb_release_all net/core/skbuff.c:1186 [inline]
__kfree_skb net/core/skbuff.c:1202 [inline]
sk_skb_reason_drop+0x170/0x3d0 net/core/skbuff.c:1240
kfree_skb_reason include/linux/skbuff.h:1260 [inline]
kfree_skb include/linux/skbuff.h:1269 [inline]
ip6_tnl_start_xmit+0xa7a/0x1430 net/ipv6/ip6_tunnel.c:1455
__netdev_start_xmit include/linux/netdevice.h:4913 [inline]
netdev_start_xmit include/linux/netdevice.h:4922 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3596
__dev_queue_xmit+0x1b63/0x3e90 net/core/dev.c:4423
neigh_output include/net/neighbour.h:542 [inline]
ip6_finish_output2+0x1001/0x1730 net/ipv6/ip6_output.c:141
ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:226
NF_HOOK include/linux/netfilter.h:314 [inline]
ndisc_send_skb+0xab2/0x1380 net/ipv6/ndisc.c:511
addrconf_rs_timer+0x371/0x670 net/ipv6/addrconf.c:4040
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2417 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
run_timer_base kernel/time/timer.c:2437 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3055
Code: ff ff e8 26 c6 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 18 c6 1f 00 e8 f3 b4 3c 0a 4d 85 f6 74 b6 e8 09 c6 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31
RSP: 0018:ffffc900039f68c0 EFLAGS: 00000293
RAX: 1ffff9200073ed64 RBX: 0000000000000000 RCX: ffff88802af8bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900039f6a70 R08: ffffffff8173c574 R09: 1ffffffff26a0b08
R10: dffffc0000000000 R11: fffffbfff26a0b09 R12: ffffffff8ef25378
R13: ffffffff8ef25320 R14: 0000000000000200 R15: dffffc0000000000
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
vprintk_emit+0x5dc/0x7c0 kernel/printk/printk.c:2348
_printk+0xd5/0x120 kernel/printk/printk.c:2373
batadv_check_known_mac_addr+0x2bd/0x410 net/batman-adv/hard-interface.c:528
batadv_hard_if_event+0x3a5/0x1620 net/batman-adv/hard-interface.c:998
notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
call_netdevice_notifiers_extack net/core/dev.c:2032 [inline]
call_netdevice_notifiers net/core/dev.c:2046 [inline]
dev_set_mac_address+0x3d9/0x510 net/core/dev.c:9101
dev_set_mac_address_user+0x31/0x50 net/core/dev.c:9115
do_setlink+0x8b6/0x41f0 net/core/rtnetlink.c:2855
__rtnl_newlink net/core/rtnetlink.c:3696 [inline]
rtnl_newlink+0x180d/0x20a0 net/core/rtnetlink.c:3743
rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6647
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2212
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: 0033:0x7fa24737bd8c
Code: 2a 5a 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 5a 02 00 48 8b
RSP: 002b:00007ffcdccee6f0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fa248044620 RCX: 00007fa24737bd8c
RDX: 000000000000002c RSI: 00007fa248044670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffcdccee744 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fa248044670 R15: 0000000000000000
</TASK>