INFO: task syz-executor.4:10876 blocked for more than 143 seconds.
Not tainted 6.4.0-rc5-syzkaller-01229-g97c5209b3d37 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26792 pid:10876 ppid:5043 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
__lock_sock+0x141/0x260 net/core/sock.c:2937
lock_sock_nested+0xda/0xf0 net/core/sock.c:3518
lock_sock include/net/sock.h:1710 [inline]
rawv6_sendmsg+0x154c/0x3d70 net/ipv6/raw.c:918
inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:830
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
____sys_sendmsg+0x344/0x920 net/socket.c:2493
___sys_sendmsg+0x110/0x1b0 net/socket.c:2547
__sys_sendmmsg+0x18f/0x460 net/socket.c:2633
__do_sys_sendmmsg net/socket.c:2662 [inline]
__se_sys_sendmmsg net/socket.c:2659 [inline]
__x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2659
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: 0033:0x7ff3df08c389
RSP: 002b:00007ff3dfe0d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007ff3df1abf80 RCX: 00007ff3df08c389
RDX: 040000000000035c RSI: 0000000020001700 RDI: 0000000000000006
RBP: 00007ff3df0d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7aaac43f R14: 00007ff3dfe0d300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c7984b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c7981b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8c7990c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559
2 locks held by getty/4759:
#0: ffff88802c70a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.4/10876:
#0: ffff8880307f0fb0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1710 [inline]
#0: ffff8880307f0fb0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: rawv6_sendmsg+0x154c/0x3d70 net/ipv6/raw.c:918
1 lock held by syz-executor.4/10882:
1 lock held by syz-executor.0/12558:
#0: ffff8880307f2cb0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1710 [inline]
#0: ffff8880307f2cb0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: rawv6_sendmsg+0x154c/0x3d70 net/ipv6/raw.c:918
1 lock held by syz-executor.0/12560:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc5-syzkaller-01229-g97c5209b3d37 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 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+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12560 Comm: syz-executor.0 Not tainted 6.4.0-rc5-syzkaller-01229-g97c5209b3d37 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:207
Code: 81 e1 00 01 00 00 65 48 8b 14 25 c0 bb 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 0c 16 00 00 85 c0 74 2b 8b 82 e8 15 00 00 <83> f8 02 75 20 48 8b 8a f0 15 00 00 8b 92 ec 15 00 00 48 8b 01 48
RSP: 0018:ffffc90017f3f320 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffff88802b438000 RSI: ffffffff88cabecd RDI: 0000000000000005
RBP: 0000000008000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000008000000 R11: 0000000000094001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888052d93dc0 R15: 000000000000ffd8
FS: 00007f597059b700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c010a43000 CR3: 000000002c043000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__ip6_append_data.isra.0+0x193d/0x4420 net/ipv6/ip6_output.c:1793
ip6_append_data+0x1f4/0x550 net/ipv6/ip6_output.c:1885
rawv6_sendmsg+0x15bb/0x3d70 net/ipv6/raw.c:919
inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:830
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
splice_to_socket+0x954/0xe30 fs/splice.c:917
do_splice_from fs/splice.c:969 [inline]
direct_splice_actor+0x114/0x180 fs/splice.c:1157
splice_direct_to_actor+0x34a/0x9c0 fs/splice.c:1103
do_splice_direct+0x1ad/0x280 fs/splice.c:1209
do_sendfile+0xb19/0x12c0 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64 fs/read_write.c:1308 [inline]
__x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1308
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: 0033:0x7f5971c8c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f597059b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5971dac1f0 RCX: 00007f5971c8c389
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f5971cd7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff7570e9bf R14: 00007f597059b300 R15: 0000000000022000