INFO: task syz-executor.1:20676 blocked for more than 143 seconds.
Not tainted 5.19.0-rc7-syzkaller-01445-g3c47fb2f4c4d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28320 pid:20676 ppid: 3643 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:734
__sys_sendto+0x236/0x340 net/socket.c:2117
__do_sys_sendto net/socket.c:2129 [inline]
__se_sys_sendto net/socket.c:2125 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2125
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: 0033:0x7fe09723bfcc
RSP: 002b:00007fe0984d5000 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe0984d50f0 RCX: 00007fe09723bfcc
RDX: 000000000000001c RSI: 00007fe0984d5140 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fe0984d5054 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe0984d50a8
R13: 00007fe0984d5140 R14: 0000000000000004 R15: 0000000000000000
INFO: task syz-executor.0:20688 blocked for more than 144 seconds.
Not tainted 5.19.0-rc7-syzkaller-01445-g3c47fb2f4c4d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28320 pid:20688 ppid: 3644 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:734
__sys_sendto+0x236/0x340 net/socket.c:2117
__do_sys_sendto net/socket.c:2129 [inline]
__se_sys_sendto net/socket.c:2125 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2125
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: 0033:0x7f45bb23bfcc
RSP: 002b:00007f45bc435000 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f45bc4350f0 RCX: 00007f45bb23bfcc
RDX: 000000000000001c RSI: 00007f45bc435140 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007f45bc435054 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f45bc4350a8
R13: 00007f45bc435140 R14: 0000000000000004 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bd87120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
4 locks held by kworker/u4:2/41:
#0: ffff8880119bd938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880119bd938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880119bd938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880119bd938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8880119bd938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8880119bd938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90000b27da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d57fdd0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:556
#3: ffffffff8bd912e8 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x630 kernel/rcu/tree.c:4105
1 lock held by kworker/u4:3/46:
#0: ffff8880b9b39f18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:544
3 locks held by kworker/0:2/145:
#0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc9000297fda8 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffff88807a5ff240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1c7/0x2710 drivers/net/netdevsim/fib.c:1475
2 locks held by kworker/u4:5/1038:
2 locks held by getty/3285:
#0: ffff88802685f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
5 locks held by syz-executor.2/20667:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
#2: ffffffff8d5c4ee8 (devlink_mutex){+.+.}-{3:3}, at: devlink_nl_pre_doit+0x2b/0xd60 net/core/devlink.c:714
#3: ffff88807a5fe2f8 (&devlink->lock_key#4){+.+.}-{3:3}, at: nsim_dev_reload_down+0x24/0xf0 drivers/net/netdevsim/dev.c:951
#4: ffffffff8bd912e8 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x630 kernel/rcu/tree.c:4105
2 locks held by syz-executor.1/20676:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.0/20688:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.2/20797:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.1/20798:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.0/20799:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.2/20819:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.1/20822:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.0/20823:
#0: ffffffff8d62c310 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d62c3c8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.19.0-rc7-syzkaller-01445-g3c47fb2f4c4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 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 5.19.0-rc7-syzkaller-01445-g3c47fb2f4c4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x23/0x60 kernel/kcov.c:200
Code: ff ff ff 31 c0 c3 90 65 8b 05 b9 fd 87 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 80 6f 02 00 a9 00 01 ff 00 74 0e <85> c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 83 f8
RSP: 0018:ffffc900001b7128 EFLAGS: 00000206
RAX: 0000000000000100 RBX: ffff88808356fc00 RCX: 0000000000000100
RDX: ffff888011a49d80 RSI: ffffffff874d47a6 RDI: ffff888082dc3200
RBP: ffff8880272213c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000008a07a R12: ffff888082dc3200
R13: 0000000000000000 R14: ffff888082dc3210 R15: ffff888082dc3200
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0086cb4a0 CR3: 000000007f0fb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
refcount_read include/linux/refcount.h:147 [inline]
__skb_ext_put+0x16/0x2e0 net/core/skbuff.c:6493
skb_ext_maybe_cow net/core/skbuff.c:6373 [inline]
skb_ext_add+0x329/0x790 net/core/skbuff.c:6423
nf_bridge_unshare net/bridge/br_netfilter_hooks.c:160 [inline]
br_nf_forward_ip+0xdd/0x1d90 net/bridge/br_netfilter_hooks.c:589
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xc5/0x1f0 net/netfilter/core.c:620
nf_hook+0x3d4/0x680 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
__br_forward+0x19a/0x580 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0x331/0x430 net/bridge/br_forward.c:189
br_flood+0x13a/0x460 net/bridge/br_forward.c:231
br_handle_frame_finish+0x1000/0x1af0 net/bridge/br_input.c:193
br_nf_hook_thresh+0x2f8/0x3d0 net/bridge/br_netfilter_hooks.c:1039
br_nf_pre_routing_finish_ipv6+0x695/0xe20 net/bridge/br_netfilter_ipv6.c:206
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x42d/0x7b0 net/bridge/br_netfilter_ipv6.c:236
br_nf_pre_routing+0x14ef/0x1fd0 net/bridge/br_netfilter_hooks.c:505
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
br_handle_frame+0x8fe/0x12d0 net/bridge/br_input.c:399
__netif_receive_skb_core+0xa13/0x3920 net/core/dev.c:5378
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5482
__netif_receive_skb+0x24/0x1b0 net/core/dev.c:5598
process_backlog+0x3a0/0x7c0 net/core/dev.c:5926
__napi_poll+0xb3/0x6e0 net/core/dev.c:6510
napi_poll net/core/dev.c:6577 [inline]
net_rx_action+0x9c1/0xd90 net/core/dev.c:6688
__do_softirq+0x29b/0x9c2 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+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306