BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
PGD 80000001217b7067 P4D 80000001217b7067 PUD 11d2dd067 PMD 0
Oops: 0010 [#1] SMP PTI
CPU: 0 PID: 11750 Comm: syz-executor1 Not tainted 4.18.0-rc8+ #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010: (null)
Code: Bad RIP value.
RSP: 0018:ffff88021fc0fd00 EFLAGS: 00010006
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8801245e9d80
RDX: 0000000000010000 RSI: aaaaaaaaaaaab000 RDI: ffff8801216df928
RBP: ffff88021fc0fe28 R08: ffffffff7fffffff R09: ffff88021f0cada8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88021fc3a040 R15: 0000000000000000
FS: 00007f7cbd1d3700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
IPVS: ftp: loaded support on port[0] = 21
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000122f4c000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
hrtimer_interrupt+0x458/0x13d0 kernel/time/hrtimer.c:1518
local_apic_timer_interrupt+0x6b/0x250 arch/x86/kernel/apic/apic.c:1028
smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1056
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:868
</IRQ>
RIP: 0010:msan_get_shadow_origin_ptr+0x187/0x2e0 mm/kmsan/kmsan_instr.c:293
Code: 8b 45 c8 48 89 45 b0 ff 75 b0 9d 48 8b 7d d0 48 8b 47 40 48 85 c0 0f 84 da 00 00 00 45 89 fd 41 81 e5 ff 0f 00 00 4b 8d 0c 2c <48> 83 c1 ff 48 81 f9 01 10 00 00 72 21 48 89 7d d0 31 d2 4c 89 ff
RSP: 0018:ffff88019bf2f0c0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: ffffea0006b253c0 RBX: ffffffff8a1af000 RCX: 0000000000000484
RDX: 0000000000000460 RSI: 0000000000000000 RDI: ffffea0006b25360
RBP: ffff88019bf2f110 R08: 0000000000000000 R09: 0000000000000002
R10: ffffffffffffff00 R11: ffffffff877c9b30 R12: 0000000000000004
R13: 0000000000000480 R14: ffffffff8a1ae000 R15: ffff88011db89480
__msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:349
skb_copy_bits+0x9a5/0xd80 net/core/skbuff.c:2082
skb_copy_bits+0xaa2/0xd80 net/core/skbuff.c:2086
__skb_header_pointer include/linux/skbuff.h:3343 [inline]
skb_header_pointer include/linux/skbuff.h:3352 [inline]
ipv6_skip_exthdr+0x2c3/0x930 net/ipv6/exthdrs_core.c:84
ipv6_get_l4proto+0x190/0x2b0 net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c:83
nf_conntrack_in+0x515/0x1f30 net/netfilter/nf_conntrack_core.c:1388
ipv6_conntrack_local+0xc3/0xf0 net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c:179
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0x15d/0x3e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:242 [inline]
__ip6_local_out+0x562/0x730 net/ipv6/output_core.c:164
ip6_local_out+0xa4/0x1d0 net/ipv6/output_core.c:174
ip6_send_skb net/ipv6/ip6_output.c:1698 [inline]
ip6_push_pending_frames+0x218/0x4d0 net/ipv6/ip6_output.c:1718
rawv6_push_pending_frames net/ipv6/raw.c:616 [inline]
rawv6_sendmsg+0x4129/0x4e80 net/ipv6/raw.c:935
inet_sendmsg+0x49a/0x740 net/ipv4/af_inet.c:798
sock_sendmsg_nosec net/socket.c:642 [inline]
sock_sendmsg net/socket.c:652 [inline]
sock_write_iter+0x3b8/0x470 net/socket.c:921
call_write_iter include/linux/fs.h:1793 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x7ac/0xa50 fs/read_write.c:487
vfs_write+0x467/0x8c0 fs/read_write.c:549
ksys_write fs/read_write.c:598 [inline]
__do_sys_write fs/read_write.c:610 [inline]
__se_sys_write fs/read_write.c:607 [inline]
__x64_sys_write+0x1b7/0x3c0 fs/read_write.c:607
do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457089
Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7cbd1d2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7cbd1d36d4 RCX: 0000000000457089
RDX: 000000000000fdef RSI: 0000000020002ec0 RDI: 0000000000000004
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d7640 R14: 00000000004ca6e6 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
CR2: 0000000000000000
---[ end trace f523f6b8484e67e1 ]---
RIP: 0010: (null)
Code: Bad RIP value.
RSP: 0018:ffff88021fc0fd00 EFLAGS: 00010006
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8801245e9d80
RDX: 0000000000010000 RSI: aaaaaaaaaaaab000 RDI: ffff8801216df928
RBP: ffff88021fc0fe28 R08: ffffffff7fffffff R09: ffff88021f0cada8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88021fc3a040 R15: 0000000000000000
FS: 00007f7cbd1d3700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000122f4c000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600