------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:2178! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 16371 Comm: syz.2.2764 Not tainted 6.14.0-rc4-syzkaller-00052-gac9c34d1e45a #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:pskb_expand_head+0x6ce/0x1240 net/core/skbuff.c:2178 Code: 7f 05 e8 35 98 f1 f8 8b 44 24 40 8b 74 24 44 29 f0 01 83 e0 00 00 00 e9 70 ff ff ff e8 4b 5e 8f f8 90 0f 0b e8 43 5e 8f f8 90 <0f> 0b e8 3b 5e 8f f8 41 81 cd 00 00 02 00 e9 46 fb ff ff e8 2a 5e RSP: 0018:ffffc9000d6f7160 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffff88806c1f9400 RCX: ffffc900273e9000 RDX: 0000000000080000 RSI: ffffffff892a810d RDI: 0000000000000005 RBP: ffff88806c1f94cc R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000005 R12: 0000000000000002 R13: 0000000000000820 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f5066b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000008000601c CR3: 0000000054770000 CR4: 0000000000352ef0 Call Trace: __skb_pad+0x18a/0x610 net/core/skbuff.c:2466 __skb_put_padto include/linux/skbuff.h:3843 [inline] skb_put_padto include/linux/skbuff.h:3862 [inline] eth_skb_pad include/linux/etherdevice.h:656 [inline] e1000_xmit_frame+0x2d99/0x5800 drivers/net/ethernet/intel/e1000/e1000_main.c:3128 __netdev_start_xmit include/linux/netdevice.h:5151 [inline] netdev_start_xmit include/linux/netdevice.h:5160 [inline] xmit_one net/core/dev.c:3806 [inline] dev_hard_start_xmit+0x9a/0x7b0 net/core/dev.c:3822 sch_direct_xmit+0x1ae/0xc30 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:4045 [inline] __dev_queue_xmit+0x13d4/0x43e0 net/core/dev.c:4621 dev_queue_xmit include/linux/netdevice.h:3313 [inline] llc_sap_action_send_test_c+0x268/0x320 net/llc/llc_s_ac.c:144 llc_exec_sap_trans_actions net/llc/llc_sap.c:153 [inline] llc_sap_next_state net/llc/llc_sap.c:182 [inline] llc_sap_state_process+0x239/0x510 net/llc/llc_sap.c:209 llc_ui_sendmsg+0xd0d/0x14e0 net/llc/af_llc.c:993 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:733 [inline] ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2573 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2627 __sys_sendmmsg+0x2fa/0x420 net/socket.c:2709 __compat_sys_sendmmsg net/compat.c:360 [inline] __do_compat_sys_sendmmsg net/compat.c:367 [inline] __se_compat_sys_sendmmsg net/compat.c:364 [inline] __ia32_compat_sys_sendmmsg+0x9d/0x100 net/compat.c:364 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: 0023:0xf73de579 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:00000000f506655c EFLAGS: 00000296 ORIG_RAX: 0000000000000159 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000080000c40 RDX: 00000000842c97f7 RSI: 0000000000008014 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pskb_expand_head+0x6ce/0x1240 net/core/skbuff.c:2178 Code: 7f 05 e8 35 98 f1 f8 8b 44 24 40 8b 74 24 44 29 f0 01 83 e0 00 00 00 e9 70 ff ff ff e8 4b 5e 8f f8 90 0f 0b e8 43 5e 8f f8 90 <0f> 0b e8 3b 5e 8f f8 41 81 cd 00 00 02 00 e9 46 fb ff ff e8 2a 5e RSP: 0018:ffffc9000d6f7160 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffff88806c1f9400 RCX: ffffc900273e9000 RDX: 0000000000080000 RSI: ffffffff892a810d RDI: 0000000000000005 RBP: ffff88806c1f94cc R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000005 R12: 0000000000000002 R13: 0000000000000820 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f5066b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000008000601c CR3: 0000000054770000 CR4: 0000000000352ef0 ---------------- 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