__should_failslab+0x124/0x180 mm/failslab.c:32
should_failslab+0x9/0x14 mm/slab_common.c:1522
slab_pre_alloc_hook mm/slab.h:423 [inline]
slab_alloc_node mm/slab.c:3299 [inline]
kmem_cache_alloc_node+0x56/0x780 mm/slab.c:3642
__alloc_skb+0x111/0x780 net/core/skbuff.c:193
BUG: unable to handle kernel NULL pointer dereference
at 0000000000000000
PGD 1d7b10067
P4D 1d7b10067
PUD 1b596b067
PMD 0
alloc_skb include/linux/skbuff.h:987 [inline]
ip_do_fragment+0xb66/0x2ac0 net/ipv4/ip_output.c:739
Oops: 0010 [#1] SMP KASAN
CPU: 1 PID: 23163 Comm: syz-executor4 Not tainted 4.17.0+ #83
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010: (null)
Code:
Bad RIP value.
RSP: 0018:ffff88018036f3a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801d90ce800 RCX: 1ffffffff10ea785
RDX: ffff88018036fc00 RSI: ffff8801c98ef480 RDI: ffff8801cad68800
RBP: ffff88018036f510 R08: ffff8801be3bad38 R09: 0000000000000006
R10: ffff8801be3ba500 R11: 0000000000000000 R12: 1ffff1003006de79
ip_fragment.constprop.49+0x179/0x240 net/ipv4/ip_output.c:546
R13: ffff88018036fc00 R14: ffff8801d90ce812 R15: ffff8801d90cec58
ip_finish_output+0x6cb/0xf80 net/ipv4/ip_output.c:315
FS: 00007ffa2e371700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d7b11000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
NF_HOOK_COND include/linux/netfilter.h:276 [inline]
ip_output+0x21b/0x850 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:444 [inline]
ip_local_out+0xc5/0x1b0 net/ipv4/ip_output.c:124
ip_queue_xmit+0x9d7/0x1f70 net/ipv4/ip_output.c:504
sock_poll+0x1d1/0x710 net/socket.c:1156
tcp_transmit_skb+0x1bea/0x3ec0 net/ipv4/tcp_output.c:1168
vfs_poll+0x77/0x2a0 fs/select.c:40
ep_item_poll.isra.15+0x2c1/0x390 fs/eventpoll.c:887
ep_insert+0x6b8/0x1c00 fs/eventpoll.c:1459
tcp_write_xmit+0x1626/0x5c00 net/ipv4/tcp_output.c:2363
__tcp_push_pending_frames+0xb2/0x290 net/ipv4/tcp_output.c:2536
tcp_sendmsg_locked+0x2c6b/0x3ee0 net/ipv4/tcp.c:1377
tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1436
inet_sendmsg+0x19f/0x690 net/ipv4/af_inet.c:798
sock_sendmsg_nosec net/socket.c:633 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:643
__sys_sendto+0x3d7/0x670 net/socket.c:1821
__do_sys_sendto net/socket.c:1833 [inline]
__se_sys_sendto net/socket.c:1829 [inline]
__x64_sys_sendto+0xe1/0x1a0 net/socket.c:1829
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4559f9
Code:
1d
ba
fb
ff
c3
66
2e
0f
1f
84
00
00
00
__do_sys_epoll_ctl fs/eventpoll.c:2113 [inline]
__se_sys_epoll_ctl fs/eventpoll.c:1999 [inline]
__x64_sys_epoll_ctl+0xef1/0x10f0 fs/eventpoll.c:1999
00
00
66
90
48
89
f8
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
48 89
f7 48
89
d6
48
89
entry_SYSCALL_64_after_hwframe+0x49/0xbe
ca
RIP: 0033:0x4559f9
4d
Code:
89 c2
1d
4d
ba
89 c8
fb
4c
ff
8b
c3
4c
66
24
2e
08
0f
0f
1f
05
84
<48>
00
3d
00
01
00 00
f0 ff
00
ff
66
0f
90
83
48
eb
89
b9
f8
fb
48 89
ff
f7
c3
48
66
89
2e
d6
0f
48
1f
89
84
ca
00
4d
00
89
00
c2
00
4d
89
RSP: 002b:00007f3e73ae3c68 EFLAGS: 00000246
c8
ORIG_RAX: 000000000000002c
4c 8b
RAX: ffffffffffffffda RBX: 00007f3e73ae46d4 RCX: 00000000004559f9
4c
RDX: fffffffffffffe4e RSI: 0000000020000000 RDI: 0000000000000014
24 08
RBP: 000000000072bea0 R08: 00000000200000c0 R09: 0000000000000006
0f
R10: 00000000000000c0 R11: 0000000000000246 R12: 0000000000000015
05
R13: 00000000004c0d2f R14: 00000000004d0790 R15: 000000000000002a
<48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffa2e370c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
RAX: ffffffffffffffda RBX: 00007ffa2e3716d4 RCX: 00000000004559f9
RDX: 0000000000000014 RSI: 0000000000000001 RDI: 0000000000000015
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bb8e9 R14: 00000000004c83f0 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
CR2: 0000000000000000
---[ end trace 52ad44f27d97cbd9 ]---
RIP: 0010: (null)
Code: Bad RIP value.
RSP: 0018:ffff88018036f3a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801d90ce800 RCX: 1ffffffff10ea785
RDX: ffff88018036fc00 RSI: ffff8801c98ef480 RDI: ffff8801cad68800
RBP: ffff88018036f510 R08: ffff8801be3bad38 R09: 0000000000000006
R10: ffff8801be3ba500 R11: 0000000000000000 R12: 1ffff1003006de79
R13: ffff88018036fc00 R14: ffff8801d90ce812 R15: ffff8801d90cec58
FS: 00007ffa2e371700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d7b11000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400