Oops: general protection fault, probably for non-canonical address 0xdffffc0000000098: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x00000000000004c0-0x00000000000004c7] CPU: 1 UID: 0 PID: 5857 Comm: sshd-session Not tainted 6.15.0-syzkaller-11802-g1af80d00e1e0 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:netdev_get_tx_queue include/linux/netdevice.h:2636 [inline] RIP: 0010:veth_xdp_rcv.constprop.0+0x142/0xda0 drivers/net/veth.c:912 Code: 84 64 31 fb 45 85 e4 0f 85 db 08 00 00 e8 36 69 31 fb 48 8d bd c0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 18 0c 00 00 44 8b a5 c0 04 00 RSP: 0018:ffffc900006a09b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff868ab616 RDX: 0000000000000098 RSI: ffffffff868aad2a RDI: 00000000000004c0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: ffffc900006a0ff8 R12: 0000000000000001 R13: 1ffff920000d4145 R14: ffffc900006a0e58 R15: ffff88803aa24000 FS: 00007f123fb97300(0000) GS:ffff8880d6865000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb9b5385f98 CR3: 00000000342bf000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: veth_poll+0x19c/0x9c0 drivers/net/veth.c:979 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0xa9f/0xfe0 net/core/dev.c:7605 handle_softirqs+0x219/0x8e0 kernel/softirq.c:579 do_softirq kernel/softirq.c:480 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:467 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:407 spin_unlock_bh include/linux/spinlock.h:396 [inline] __release_sock+0xd4/0x400 net/core/sock.c:3206 release_sock+0x5a/0x220 net/core/sock.c:3767 tcp_sendmsg+0x38/0x50 net/ipv4/tcp.c:1397 inet_sendmsg+0xb9/0x140 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] sock_write_iter+0x4aa/0x5b0 net/socket.c:1131 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x6c4/0x1150 fs/read_write.c:686 ksys_write+0x1f8/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f123f4a7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffde5e8caf0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f123fb97300 RCX: 00007f123f4a7407 RDX: 00000000000001dc RSI: 000055fcfd9a67c0 RDI: 0000000000000004 RBP: 000055fcfd97cc10 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 00007ffde5e8cc40 R14: 0000000000000000 R15: 0000000000000004 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:netdev_get_tx_queue include/linux/netdevice.h:2636 [inline] RIP: 0010:veth_xdp_rcv.constprop.0+0x142/0xda0 drivers/net/veth.c:912 Code: 84 64 31 fb 45 85 e4 0f 85 db 08 00 00 e8 36 69 31 fb 48 8d bd c0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 18 0c 00 00 44 8b a5 c0 04 00 RSP: 0018:ffffc900006a09b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff868ab616 RDX: 0000000000000098 RSI: ffffffff868aad2a RDI: 00000000000004c0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: ffffc900006a0ff8 R12: 0000000000000001 R13: 1ffff920000d4145 R14: ffffc900006a0e58 R15: ffff88803aa24000 FS: 00007f123fb97300(0000) GS:ffff8880d6865000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb9b5385f98 CR3: 00000000342bf000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 84 64 31 fb test %ah,-0x5(%rcx,%rsi,1) 4: 45 85 e4 test %r12d,%r12d 7: 0f 85 db 08 00 00 jne 0x8e8 d: e8 36 69 31 fb call 0xfb316948 12: 48 8d bd c0 04 00 00 lea 0x4c0(%rbp),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e 18 0c 00 00 jle 0xc52 3a: 44 rex.R 3b: 8b .byte 0x8b 3c: a5 movsl %ds:(%rsi),%es:(%rdi) 3d: c0 .byte 0xc0 3e: 04 00 add $0x0,%al