Hello,
syzbot found the following crash on:
HEAD commit:7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1744dc8310
kernel config: https://syzkaller.appspot.com/x/.config?x=183dd243398ba7ec
dashboard link: https://syzkaller.appspot.com/bug?extid=bb3d7a24f705078b1286
compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/
c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+bb3d7a24f705078b1...@syzkaller.appspotmail.com
[ cut here ]
WARNING: CPU: 0 PID: 17717 at drivers/net/ipvlan/ipvlan_l3s.c:148
ipvlan_unregister_nf_hook drivers/net/ipvlan/ipvlan_l3s.c:148 [inline]
WARNING: CPU: 0 PID: 17717 at drivers/net/ipvlan/ipvlan_l3s.c:148
ipvlan_l3s_unregister+0x145/0x1d0 drivers/net/ipvlan/ipvlan_l3s.c:221
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 17717 Comm: syz-executor.3 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google
01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1f0/0x31e lib/dump_stack.c:118
panic+0x264/0x7a0 kernel/panic.c:231
__warn+0x227/0x250 kernel/panic.c:600
report_bug+0x1b1/0x2e0 lib/bug.c:198
handle_bug+0x42/0x80 arch/x86/kernel/traps.c:235
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:255
asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563
RIP: 0010:ipvlan_unregister_nf_hook drivers/net/ipvlan/ipvlan_l3s.c:148 [inline]
RIP: 0010:ipvlan_l3s_unregister+0x145/0x1d0 drivers/net/ipvlan/ipvlan_l3s.c:221
Code: 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 92 94 dc fc 49 c7 06 00 00
00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 0b 95 9d fc <0f> 0b eb c8 e8 02 95 9d
fc c6 05 79 32 92 04 01 48 c7 c7 6c c6 e9
RSP: 0018:c90019d57330 EFLAGS: 00010287
RAX: 84d6e705 RBX: 111013b08b98 RCX: 0004
RDX: c9000f539000 RSI: 06d7 RDI: 06d8
RBP: R08: 84d6e68e R09: fbfff12da576
R10: fbfff12da576 R11: R12: dc00
R13: 88809d845cc0 R14: 88804bd08000 R15: 888055fd6100
ipvlan_set_port_mode+0x33e/0x420 drivers/net/ipvlan/ipvlan_main.c:37
ipvlan_nl_changelink+0x18a/0x340 drivers/net/ipvlan/ipvlan_main.c:435
__rtnl_newlink net/core/rtnetlink.c:3255 [inline]
rtnl_newlink+0x15e3/0x1bf0 net/core/rtnetlink.c:3397
rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5460
netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2469
netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
netlink_unicast+0x786/0x940 net/netlink/af_netlink.c:1329
netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1918
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
sys_sendmsg+0x519/0x800 net/socket.c:2352
___sys_sendmsg net/socket.c:2406 [inline]
__sys_sendmsg+0x2b1/0x360 net/socket.c:2439
do_syscall_64+0x73/0xe0 arch/x86/entry/common.c:359
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cb29
Code: Bad RIP value.
RSP: 002b:7f7160e6cc78 EFLAGS: 0246 ORIG_RAX: 002e
RAX: ffda RBX: 00502760 RCX: 0045cb29
RDX: RSI: 2040 RDI: 0003
RBP: 0078bf00 R08: R09:
R10: R11: 0246 R12:
R13: 0a43 R14: 004cd2a1 R15: 7f7160e6d6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
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