INFO: task syz-executor.1:12161 blocked for more than 143 seconds.
Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28800 pid:12161 ppid:3624 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0xadf/0x5270 kernel/sched/core.c:6490
schedule+0xda/0x1b0 kernel/sched/core.c:6566
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ca/0x5c0 kernel/sched/completion.c:106
__flush_work+0x58d/0xae0 kernel/workqueue.c:3073
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3160
p9_conn_destroy net/9p/trans_fd.c:890 [inline]
p9_fd_close+0x328/0x580 net/9p/trans_fd.c:920
p9_client_destroy+0xbe/0x370 net/9p/client.c:1018
v9fs_session_init+0x1003/0x1810 fs/9p/v9fs.c:488
v9fs_mount+0xba/0xc90 fs/9p/vfs_super.c:126
legacy_get_tree+0x105/0x220 fs/fs_context.c:610
vfs_get_tree+0x89/0x2f0 fs/super.c:1530
do_new_mount fs/namespace.c:3040 [inline]
path_mount+0x1326/0x1e20 fs/namespace.c:3370
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount fs/namespace.c:3568 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b3808b5a9
RSP: 002b:00007f6b391f6168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6b381ac050 RCX: 00007f6b3808b5a9
RDX: 0000000020000040 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 00007f6b380e6580 R08: 0000000020000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdce5174bf R14: 00007f6b391f6300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x206/0x250 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+0xbf9/0xf30 kernel/hung_task.c:377
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:fib6_table_lookup+0x4cc/0x9c0 net/ipv6/route.c:2175
Code: 70 48 8b 54 24 68 48 8b 34 24 48 8b 7c 24 10 e8 0a 70 fe ff 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 60 48 c7 00 00 00 00 00 40 08 00 00 00 00 48 8b 84 24 f8 00 00 00 65 48 2b 04 25 28 00
RSP: 0018:ffffc900003ceba8 EFLAGS: 00000282
RAX: fffff52000079d85 RBX: ffff8880185e1800 RCX: 0000000000000100
RDX: ffff888012918080 RSI: ffffffff881b7fc6 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000008c07d R12: ffff88804d2f1800
R13: ffffc900003cec48 R14: ffff88801d15c400 R15: ffff88801dbf0180
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0058d5000 CR3: 000000000bc8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ip6_pol_route+0x1c5/0x1190 net/ipv6/route.c:2218
pol_lookup_func include/net/ip6_fib.h:582 [inline]
fib6_rule_lookup+0x111/0x6f0 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2287 [inline]
ip6_route_input+0x619/0xb90 net/ipv6/route.c:2583
ip6_rcv_finish_core.constprop.0+0x1a4/0x5d0 net/ipv6/ip6_input.c:66
ip6_rcv_finish+0x12c/0x2c0 net/ipv6/ip6_input.c:77
ip_sabotage_in net/bridge/br_netfilter_hooks.c:874 [inline]
ip_sabotage_in+0x1fa/0x260 net/bridge/br_netfilter_hooks.c:865
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xc5/0x1f0 net/netfilter/core.c:614
nf_hook.constprop.0+0x3ac/0x650 include/linux/netfilter.h:257
NF_HOOK include/linux/netfilter.h:300 [inline]
ipv6_rcv+0x9e/0x380 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5485
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
netif_receive_skb_internal net/core/dev.c:5685 [inline]
netif_receive_skb+0x12f/0x8d0 net/core/dev.c:5744
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
br_pass_frame_up+0x303/0x410 net/bridge/br_input.c:68
br_handle_frame_finish+0x909/0x1aa0 net/bridge/br_input.c:199
br_nf_hook_thresh+0x2f8/0x3d0 net/bridge/br_netfilter_hooks.c:1041
br_nf_pre_routing_finish_ipv6+0x695/0xef0 net/bridge/br_netfilter_ipv6.c:207
NF_HOOK include/linux/netfilter.h:302 [inline]
br_nf_pre_routing_ipv6+0x417/0x7c0 net/bridge/br_netfilter_ipv6.c:237
br_nf_pre_routing+0x1496/0x1fe0 net/bridge/br_netfilter_hooks.c:507
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
br_handle_frame+0x9c9/0x12d0 net/bridge/br_input.c:399
__netif_receive_skb_core+0x9fe/0x38f0 net/core/dev.c:5379
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5483
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
process_backlog+0x3a0/0x7c0 net/core/dev.c:5927
__napi_poll+0xb3/0x6d0 net/core/dev.c:6494
napi_poll net/core/dev.c:6561 [inline]
net_rx_action+0x9c1/0xd90 net/core/dev.c:6672
__do_softirq+0x1d0/0x9c8 kernel/softirq.c:571
run_ksoftirqd kernel/softirq.c:934 [inline]
run_ksoftirqd+0x2d/0x60 kernel/softirq.c:926
smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306