skbuff: skb_under_panic: text:ffffffff89ac860b len:-1767820556 put:-1767820580 head:ffff888023c7b300 data:ffff887f8d2680e4 tail:0xd8 end:0x140 dev:bond0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:206! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 UID: 0 PID: 8828 Comm: syz.3.720 Not tainted 6.13.0-rc2-syzkaller-00036-g231825b2e1ff #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:206 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 80 bf 7a 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 fa 8c 82 f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 14 97 05 f9 4c RSP: 0000:ffffc9000389eb30 EFLAGS: 00010282 RAX: 0000000000000098 RBX: ffff88802640fe00 RCX: ffffc9000c001000 RDX: 0000000000000000 RSI: ffffffff817978a6 RDI: 0000000000000005 RBP: ffffffff8c7ad320 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffffffff89ac860b R13: 0000000096a132dc R14: ffff8880667f8120 R15: 0000000000000140 FS: 0000000000000000(0000) GS:ffff88802b600000(0063) knlGS:00000000f50d6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002f80dff8 CR3: 000000006c5fa000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_under_panic net/core/skbuff.c:216 [inline] skb_push+0xca/0xf0 net/core/skbuff.c:2636 ipgre_header+0x6b/0x6d0 net/ipv4/ip_gre.c:891 dev_hard_header include/linux/netdevice.h:3222 [inline] arp_create+0x423/0x960 net/ipv4/arp.c:578 arp_send_dst net/ipv4/arp.c:314 [inline] arp_send_dst net/ipv4/arp.c:301 [inline] arp_send+0xad/0x100 net/ipv4/arp.c:328 inetdev_send_gratuitous_arp net/ipv4/devinet.c:1579 [inline] inetdev_event+0x2d8/0x16b0 net/ipv4/devinet.c:1646 notifier_call_chain+0xb7/0x410 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline] call_netdevice_notifiers net/core/dev.c:2048 [inline] dev_open net/core/dev.c:1517 [inline] dev_open+0x144/0x160 net/core/dev.c:1505 bond_setup_by_slave drivers/net/bonding/bond_main.c:1648 [inline] bond_enslave+0x2acb/0x5df0 drivers/net/bonding/bond_main.c:2043 do_set_master+0x1bc/0x230 net/core/rtnetlink.c:2917 do_setlink.constprop.0+0xa0d/0x3f20 net/core/rtnetlink.c:3116 rtnl_changelink net/core/rtnetlink.c:3723 [inline] __rtnl_newlink net/core/rtnetlink.c:3874 [inline] rtnl_newlink+0x12e6/0x1d00 net/core/rtnetlink.c:4009 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6919 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] ____sys_sendmsg+0x9ae/0xb40 net/socket.c:2583 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637 __sys_sendmsg+0x16e/0x220 net/socket.c:2669 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f87579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f50d655c EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000600 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:206 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 80 bf 7a 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 fa 8c 82 f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 14 97 05 f9 4c RSP: 0000:ffffc9000389eb30 EFLAGS: 00010282 RAX: 0000000000000098 RBX: ffff88802640fe00 RCX: ffffc9000c001000 RDX: 0000000000000000 RSI: ffffffff817978a6 RDI: 0000000000000005 RBP: ffffffff8c7ad320 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffffffff89ac860b R13: 0000000096a132dc R14: ffff8880667f8120 R15: 0000000000000140 FS: 0000000000000000(0000) GS:ffff88802b700000(0063) knlGS:00000000f50d6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020efd000 CR3: 000000006c5fa000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi