INFO: task syz-executor.3:27869 blocked for more than 143 seconds.
Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26832 pid:27869 ppid: 15328 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 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:2494
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
netlink_unicast+0x539/0x7e0 net/netlink/af_netlink.c:1343
netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
____sys_sendmsg+0x6e8/0x810 net/socket.c:2413
___sys_sendmsg+0xf3/0x170 net/socket.c:2467
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2496
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: 0033:0x7eff4c461fe9
RSP: 002b:00007eff4ad53168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007eff4c5752a0 RCX: 00007eff4c461fe9
RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000005
RBP: 00007eff4c4bc08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd68164c9f R14: 00007eff4ad53300 R15: 0000000000022000
INFO: task syz-executor.1:27876 blocked for more than 143 seconds.
Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26696 pid:27876 ppid: 23407 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 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:2494
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
netlink_unicast+0x539/0x7e0 net/netlink/af_netlink.c:1343
netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
__sys_sendto+0x21c/0x320 net/socket.c:2040
__do_sys_sendto net/socket.c:2052 [inline]
__se_sys_sendto net/socket.c:2048 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2048
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: 0033:0x7fde44e19dac
RSP: 002b:00007fde437db000 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fde437db0f0 RCX: 00007fde44e19dac
RDX: 0000000000000020 RSI: 00007fde437db140 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fde437db054 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fde437db0a8
R13: 00007fde437db140 R14: 0000000000000004 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb84620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3282:
#0: ffff88814b05e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002ba32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
3 locks held by syz-executor.3/27868:
2 locks held by syz-executor.3/27869:
#0: ffffffff8d3aeef0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d3aefa8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d3aefa8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
2 locks held by syz-executor.1/27876:
#0: ffffffff8d3aeef0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d3aefa8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d3aefa8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 27868 Comm: syz-executor.3 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_switch+0xb2/0xf0 kernel/kcov.c:322
Code: 34 ed 28 00 00 00 48 39 f7 72 1b 48 83 c2 01 48 89 5c 30 e0 48 89 6c 30 e8 4c 89 5c 30 f0 4e 89 4c e8 20 48 89 10 48 83 c1 01 <49> 39 ca 75 95 5b 5d 41 5c 41 5d c3 48 83 f8 40 bb 07 00 00 00 0f
RSP: 0018:ffffc9000590ec48 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff8880502bd700 RDI: 0000000000000003
RBP: 0000000000000001 R08: ffffffff8a050f40 R09: ffffffff83db74fd
R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880502bd700
R13: 000000002581fb3b R14: 000000002581fb3b R15: 000000002581fb3b
FS: 00007eff4ad74700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005600807dd680 CR3: 000000007f08d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
jhash2 include/linux/jhash.h:135 [inline]
rhashtable_jhash2+0x14d/0x2d0 lib/rhashtable.c:970
rht_key_hashfn include/linux/rhashtable.h:159 [inline]
__rhashtable_lookup include/linux/rhashtable.h:596 [inline]
rhashtable_lookup include/linux/rhashtable.h:638 [inline]
tipc_sk_lookup+0x284/0xaa0 net/tipc/socket.c:2997
tipc_nl_publ_dump+0x315/0xce0 net/tipc/socket.c:3811
__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+0x4f1/0x8a0 net/tipc/netlink_compat.c:1087
__tipc_nl_compat_dumpit+0x418/0xb40 net/tipc/netlink_compat.c:238
tipc_nl_compat_dumpit+0x458/0x800 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:2494
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
netlink_unicast+0x539/0x7e0 net/netlink/af_netlink.c:1343
netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
____sys_sendmsg+0x6e8/0x810 net/socket.c:2413
___sys_sendmsg+0xf3/0x170 net/socket.c:2467
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2496
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: 0033:0x7eff4c461fe9
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:00007eff4ad74168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007eff4c5751d0 RCX: 00007eff4c461fe9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000006
RBP: 00007eff4c4bc08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd68164c9f R14: 00007eff4ad74300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 34 ed xor $0xed,%al
2: 28 00 sub %al,(%rax)
4: 00 00 add %al,(%rax)
6: 48 39 f7 cmp %rsi,%rdi
9: 72 1b jb 0x26
b: 48 83 c2 01 add $0x1,%rdx
f: 48 89 5c 30 e0 mov %rbx,-0x20(%rax,%rsi,1)
14: 48 89 6c 30 e8 mov %rbp,-0x18(%rax,%rsi,1)
19: 4c 89 5c 30 f0 mov %r11,-0x10(%rax,%rsi,1)
1e: 4e 89 4c e8 20 mov %r9,0x20(%rax,%r13,8)
23: 48 89 10 mov %rdx,(%rax)
26: 48 83 c1 01 add $0x1,%rcx
* 2a: 49 39 ca cmp %rcx,%r10 <-- trapping instruction
2d: 75 95 jne 0xffffffc4
2f: 5b pop %rbx
30: 5d pop %rbp
31: 41 5c pop %r12
33: 41 5d pop %r13
35: c3 retq
36: 48 83 f8 40 cmp $0x40,%rax
3a: bb 07 00 00 00 mov $0x7,%ebx
3f: 0f .byte 0xf