INFO: task syz-executor:4258 blocked for more than 143 seconds.
Not tainted 6.1.128-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20384 pid:4258 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
io_schedule+0x88/0x100 kernel/sched/core.c:8786
folio_wait_bit_common+0x878/0x1290 mm/filemap.c:1324
truncate_inode_pages_range+0xbb5/0x1340 mm/truncate.c:422
evict+0x53c/0x930 fs/inode.c:707
dispose_list fs/inode.c:738 [inline]
evict_inodes+0x668/0x700 fs/inode.c:792
generic_shutdown_super+0x94/0x340 fs/super.c:480
kill_block_super+0x7a/0xe0 fs/super.c:1470
deactivate_locked_super+0xa0/0x110 fs/super.c:332
cleanup_mnt+0x490/0x520 fs/namespace.c:1186
task_work_run+0x246/0x300 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2fe838e0d7
RSP: 002b:00007ffc2ba75fc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f2fe840e08c RCX: 00007f2fe838e0d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc2ba76080
RBP: 00007ffc2ba76080 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc2ba77110
R13: 00007f2fe840e08c R14: 0000000000039698 R15: 00007ffc2ba77150
Showing all locks held in the system:
2 locks held by kworker/u4:1/11:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32b290 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32ba90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
3 locks held by ksoftirqd/1/21:
1 lock held by khungtaskd/28:
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6510
2 locks held by getty/4003:
#0: ffff88807fb30098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc9000325e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
1 lock held by syz-executor/4258:
#0: ffff88805517c0e0 (&type->s_umount_key#89){+.+.}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:362
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ae/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:fib_rules_lookup+0x9e4/0xd00 net/core/fib_rules.c:330
Code: 5d 41 5e 41 5f 5d c3 e8 ba 4c d1 f8 eb 0c e8 b3 4c d1 f8 eb 05 e8 ac 4c d1 f8 48 8b 44 24 30 48 8d 58 24 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 3a 02 00 00 8b 1b 89 de 83 e6 01 31 ff
RSP: 0018:ffffc900001b7280 EFLAGS: 00000a03
RAX: 1ffff92000036e8c RBX: ffffc900001b7464 RCX: ffff888018c01dc0
RDX: 0000000000000100 RSI: 00000000ffffffff RDI: 00000000ffffffff
RBP: ffffc900001b7390 R08: ffffffff8980e76b R09: ffffffff88b94a62
R10: 0000000000000002 R11: ffff888018c01dc0 R12: ffffc900001b7580
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807edeba00
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22c8d79178 CR3: 000000007de5a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
fib6_rule_lookup+0x1f9/0x620 net/ipv6/fib6_rules.c:108
ip6_route_input_lookup net/ipv6/route.c:2294 [inline]
ip6_route_input+0x830/0xd90 net/ipv6/route.c:2590
ip6_rcv_finish+0x140/0x230 net/ipv6/ip6_input.c:77
NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302
__netif_receive_skb_one_core net/core/dev.c:5538 [inline]
__netif_receive_skb+0x1c6/0x530 net/core/dev.c:5652
process_backlog+0x381/0x760 net/core/dev.c:5980
__napi_poll+0xc7/0x470 net/core/dev.c:6547
napi_poll net/core/dev.c:6614 [inline]
net_rx_action+0x70f/0xeb0 net/core/dev.c:6728
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
run_ksoftirqd+0xc6/0x120 kernel/softirq.c:945
smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295