INFO: task syz-executor.4:592 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-13115-gee3f96b16468 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28176 pid:592 ppid:568 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xcce/0x5b20 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
schedule_timeout+0x276/0x2b0 kernel/time/timer.c:2143
___down_common kernel/locking/semaphore.c:225 [inline]
__down_common+0x3b2/0x8b0 kernel/locking/semaphore.c:246
down+0x74/0xa0 kernel/locking/semaphore.c:63
console_lock+0x2c/0x80 kernel/printk/printk.c:2609
vcs_open+0x66/0xc0 drivers/tty/vt/vc_screen.c:756
chrdev_open+0x26a/0x770 fs/char_dev.c:414
do_dentry_open+0x6cc/0x13f0 fs/open.c:920
do_open fs/namei.c:3560 [inline]
path_openat+0x1baa/0x2750 fs/namei.c:3715
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_openat fs/open.c:1380 [inline]
__se_sys_openat fs/open.c:1375 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1375
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7861a8c0f9
RSP: 002b:00007f78627e7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7861bac2c0 RCX: 00007f7861a8c0f9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f7861ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe85ccfb2f R14: 00007f78627e7300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794e70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794b70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
4 locks held by ksoftirqd/0/15:
1 lock held by khungtaskd/27:
#0: ffffffff8c7959c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by getty/4756:
#0: ffff88802bd22098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:7/22187:
2 locks held by syz-executor.4/525:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.2.0-syzkaller-13115-gee3f96b16468 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x316/0x3e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x33f/0x460 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe94/0x11e0 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.2.0-syzkaller-13115-gee3f96b16468 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
RIP: 0010:stack_trace_consume_entry+0xe/0x160 kernel/stacktrace.c:83
Code: e8 b7 9b 63 00 e9 29 fd ff ff e8 cd 9b 63 00 e9 ed fc ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 83 ec 08 48 c1 ea 03 0f b6
RSP: 0018:ffffc900001469d8 EFLAGS: 00000282
RAX: dffffc0000000000 RBX: ffffffff8172dac0 RCX: 0000000000000000
RDX: 1ffff92000028d45 RSI: ffffffff81d65032 RDI: ffffc90000146a98
RBP: ffffc90000146a68 R08: ffffffff8f01f4e4 R09: ffffc90000146a14
R10: 0000000000000000 R11: ffffc90000146b00 R12: ffffc90000146a98
R13: 0000000000000000 R14: ffff88801722ba80 R15: ffffea0002a3a5c0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00a06d000 CR3: 00000000ae2b4000 CR4: 0000000000350ef0
Call Trace:
arch_stack_walk+0x71/0xf0 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:521
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
slab_free mm/slub.c:3787 [inline]
kmem_cache_free+0xec/0x4e0 mm/slub.c:3809
kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:924
__kfree_skb net/core/skbuff.c:981 [inline]
kfree_skb_reason+0x1b8/0x510 net/core/skbuff.c:1013
icmpv6_rcv+0x6d1/0x1670 net/ipv6/icmp.c:1029
ip6_protocol_deliver_rcu+0x2dd/0x12a0 net/ipv6/ip6_input.c:439
ip6_input_finish+0x150/0x2f0 net/ipv6/ip6_input.c:484
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip6_input+0xa0/0xd0 net/ipv6/ip6_input.c:493
ip6_mc_input+0x40b/0xf50 net/ipv6/ip6_input.c:587
dst_input include/net/dst.h:454 [inline]
ip6_rcv_finish+0x197/0x2c0 net/ipv6/ip6_input.c:79
ip_sabotage_in net/bridge/br_netfilter_hooks.c:875 [inline]
ip_sabotage_in+0x208/0x270 net/bridge/br_netfilter_hooks.c:865
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:614
nf_hook.constprop.0+0x408/0x710 include/linux/netfilter.h:257
NF_HOOK include/linux/netfilter.h:300 [inline]
ipv6_rcv+0xa2/0x380 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5479
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5593
netif_receive_skb_internal net/core/dev.c:5679 [inline]
netif_receive_skb+0x16d/0xa70 net/core/dev.c:5738
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
br_pass_frame_up+0x303/0x430 net/bridge/br_input.c:68
br_handle_frame_finish+0xae9/0x1d90 net/bridge/br_input.c:216
br_nf_hook_thresh+0x2fb/0x3f0 net/bridge/br_netfilter_hooks.c:1042
br_nf_pre_routing_finish_ipv6+0x699/0xf30 net/bridge/br_netfilter_ipv6.c:207
NF_HOOK include/linux/netfilter.h:302 [inline]
br_nf_pre_routing_ipv6+0x41b/0x830 net/bridge/br_netfilter_ipv6.c:237
br_nf_pre_routing+0xd80/0x14f0 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:272 [inline]
br_handle_frame+0x9cd/0x1320 net/bridge/br_input.c:416
__netif_receive_skb_core+0xa2e/0x3a40 net/core/dev.c:5373
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5477
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5593
process_backlog+0x279/0x850 net/core/dev.c:5921
__napi_poll+0xb8/0x870 net/core/dev.c:6482
napi_poll net/core/dev.c:6549 [inline]
net_rx_action+0x9fd/0xdc0 net/core/dev.c:6659
__do_softirq+0x2e3/0xae3 kernel/softirq.c:571
run_ksoftirqd kernel/softirq.c:934 [inline]
run_ksoftirqd+0x31/0x60 kernel/softirq.c:926
smpboot_thread_fn+0x659/0xa20 kernel/smpboot.c:164
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308