INFO: task syz-executor.4:3711 blocked for more than 143 seconds.
Not tainted 5.16.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23640 pid: 3711 ppid: 3707 flags:0x20000000
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
get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
do_ip6t_get_ctl+0x152/0xa10 net/ipv6/netfilter/ip6_tables.c:1663
nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1495
tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4252
__sys_getsockopt+0x21f/0x5f0 net/socket.c:2220
__do_compat_sys_socketcall+0x513/0x660 net/compat.c:495
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f1c549
RSP: 002b:00000000f75ad650 EFLAGS: 00000286 ORIG_RAX: 0000000000000066
RAX: ffffffffffffffda RBX: 000000000000000f RCX: 00000000f75ad668
RDX: 00000000f75ad6d8 RSI: 00000000f75ad6d8 RDI: 00000000f75ad72c
RBP: 00000000f7054a60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by klogd/2960:
2 locks held by getty/3282:
#0: ffff88807f288098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by syz-executor.4/3711:
#0: ffff888022860e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
1 lock held by syz-executor.1/7639:
#0: ffff888022860e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: translate_compat_table+0x1b2/0x18d0 net/ipv6/netfilter/ip6_tables.c:1424
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc5-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: 2960 Comm: klogd Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_pc+0x5c/0x60 kernel/kcov.c:210
Code: 82 80 15 00 00 83 f8 02 75 20 48 8b 8a 88 15 00 00 8b 92 84 15 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 34 c1 48 89 01 0f 1f 00 41 55 41 54 49 89 fc 55 48 bd eb 83 b5 80 46 86 c8 61
RSP: 0018:ffffc90001aaf800 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88807d671d00 RSI: ffffffff8134de84 RDI: 0000000000000003
RBP: ffff8880b47578c0 R08: 0000000000000000 R09: 000000000000002e
R10: ffffffff8134de7a R11: 000000000000003f R12: 00000000347578c0
R13: 000000000000002e R14: ffffea0000000000 R15: ffff8880276d5580
FS: 00007f0454373800(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff57881d990 CR3: 0000000022065000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__phys_addr+0xc4/0x140 arch/x86/mm/physaddr.c:31
virt_to_head_page include/linux/mm.h:861 [inline]
___cache_free+0x20/0x360 mm/slub.c:3520
qlink_free mm/kasan/quarantine.c:146 [inline]
qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
__kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3234 [inline]
__kmalloc_node_track_caller+0x238/0x360 mm/slub.c:4956
kmalloc_reserve net/core/skbuff.c:354 [inline]
__alloc_skb+0xde/0x340 net/core/skbuff.c:426
alloc_skb include/linux/skbuff.h:1126 [inline]
alloc_skb_with_frags+0x93/0x620 net/core/skbuff.c:6078
sock_alloc_send_pskb+0x783/0x910 net/core/sock.c:2575
unix_dgram_sendmsg+0x3ec/0x1950 net/unix/af_unix.c:1811
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: 0033:0x7f045450f0ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffda0402798 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f045450f0ac
RDX: 000000000000004d RSI: 000055ab63425230 RDI: 0000000000000003
RBP: 000055ab6341e910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007f045468a77d R15: 00007ffda04028a8
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 80 15 00 00 83 f8 02 adcb $0x2,-0x77d0000(%rip) # 0xf8830007
7: 75 20 jne 0x29
9: 48 8b 8a 88 15 00 00 mov 0x1588(%rdx),%rcx
10: 8b 92 84 15 00 00 mov 0x1584(%rdx),%edx
16: 48 8b 01 mov (%rcx),%rax
19: 48 83 c0 01 add $0x1,%rax
1d: 48 39 c2 cmp %rax,%rdx
20: 76 07 jbe 0x29
22: 48 89 34 c1 mov %rsi,(%rcx,%rax,8)
26: 48 89 01 mov %rax,(%rcx)
* 29: c3 retq <-- trapping instruction
2a: 0f 1f 00 nopl (%rax)
2d: 41 55 push %r13
2f: 41 54 push %r12
31: 49 89 fc mov %rdi,%r12
34: 55 push %rbp
35: 48 bd eb 83 b5 80 46 movabs $0x61c8864680b583eb,%rbp
3c: 86 c8 61