INFO: task syz-executor.2:30500 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23744 pid:30500 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
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:2487
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1315 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1341
netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1912
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
__sys_sendto+0x21c/0x320 net/socket.c:2036
__do_sys_sendto net/socket.c:2048 [inline]
__se_sys_sendto net/socket.c:2044 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2044
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+0x44/0xae
RIP: 0033:0x7f304538b8ac
RSP: 002b:00007ffd2ebe8320 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f3046424320 RCX: 00007f304538b8ac
RDX: 0000000000000024 RSI: 00007f3046424370 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007ffd2ebe8374 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007ffd2ebe83c8
R13: 00007f3046424370 R14: 0000000000000004 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by kworker/u4:2/50:
1 lock held by in:imklog/6253:
#0: ffff88801c447770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
3 locks held by syz-executor.4/30371:
2 locks held by syz-executor.2/30500:
#0: ffffffff8d3a0990 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d3a0a48 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d3a0a48 (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 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
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: 30371 Comm: syz-executor.4 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preemption_disabled+0x3f/0x170 lib/smp_processor_id.c:56
Code: 8b 25 1d 37 bd 76 65 8b 1d 8e 91 bd 76 81 e3 ff ff ff 7f 31 ff 89 de 0f 1f 44 00 00 85 db 74 11 0f 1f 44 00 00 44 89 e0 5b 5d <41> 5c 41 5d 41 5e c3 0f 1f 44 00 00 9c 5b 81 e3 00 02 00 00 31 ff
RSP: 0018:ffffc90002b2ec70 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffc90013370000
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 00000000000000f6 R08: 0000000000000001 R09: ffffffff83da7e3d
R10: ffffffff88b957f7 R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff8a052260 R14: dffffc0000000000 R15: ffff8880155e0000
FS: 00007fc18c110700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4d8800cea0 CR3: 000000007cce8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1169 [inline]
rcu_lockdep_current_cpu_online+0x2d/0x150 kernel/rcu/tree.c:1160
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held_common kernel/rcu/update.c:102 [inline]
rcu_read_lock_held+0x21/0x40 kernel/rcu/update.c:309
rht_ptr_rcu include/linux/rhashtable.h:369 [inline]
__rhashtable_lookup include/linux/rhashtable.h:599 [inline]
rhashtable_lookup include/linux/rhashtable.h:638 [inline]
tipc_sk_lookup+0x324/0xaa0 net/tipc/socket.c:2995
tipc_nl_publ_dump+0x315/0xd40 net/tipc/socket.c:3809
__tipc_nl_compat_dumpit+0x2af/0xb40 net/tipc/netlink_compat.c:227
tipc_nl_compat_publ_dump net/tipc/netlink_compat.c:1035 [inline]
tipc_nl_compat_sk_dump+0x4f1/0x890 net/tipc/netlink_compat.c:1087
__tipc_nl_compat_dumpit+0x418/0xb40 net/tipc/netlink_compat.c:238
tipc_nl_compat_dumpit+0x458/0x7f0 net/tipc/netlink_compat.c:321
tipc_nl_compat_handle net/tipc/netlink_compat.c:1286 [inline]
tipc_nl_compat_recv+0x578/0xb40 net/tipc/netlink_compat.c:1324
genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731
genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2487
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1315 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1341
netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1912
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
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+0x44/0xae
RIP: 0033:0x7fc18eb9aae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc18c110188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc18ecadf60 RCX: 00007fc18eb9aae9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000009
RBP: 00007fc18ebf4f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff36f1ff8f R14: 00007fc18c110300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 8b 25 1d 37 bd 76 mov 0x76bd371d(%rip),%esp # 0x76bd3723
6: 65 8b 1d 8e 91 bd 76 mov %gs:0x76bd918e(%rip),%ebx # 0x76bd919b
d: 81 e3 ff ff ff 7f and $0x7fffffff,%ebx
13: 31 ff xor %edi,%edi
15: 89 de mov %ebx,%esi
17: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
1c: 85 db test %ebx,%ebx
1e: 74 11 je 0x31
20: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
25: 44 89 e0 mov %r12d,%eax
28: 5b pop %rbx
29: 5d pop %rbp
* 2a: 41 5c pop %r12 <-- trapping instruction
2c: 41 5d pop %r13
2e: 41 5e pop %r14
30: c3 retq
31: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
36: 9c pushfq
37: 5b pop %rbx
38: 81 e3 00 02 00 00 and $0x200,%ebx
3e: 31 ff xor %edi,%edi