Oops: general protection fault, probably for non-canonical address 0xdffffc0000000098: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x00000000000004c0-0x00000000000004c7] CPU: 3 UID: 0 PID: 33 Comm: ksoftirqd/3 Not tainted 6.15.0-syzkaller-13473-gc0c9379f235d #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: 54 a8 2f fb 45 85 e4 0f 85 db 08 00 00 e8 06 ad 2f 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:ffffc900006cf7e0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff868c7236 RDX: 0000000000000098 RSI: ffffffff868c694a RDI: 00000000000004c0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 1ffff920000d9f0a R14: ffffc900006cfc80 R15: ffff88802a024000 FS: 0000000000000000(0000) GS:ffff8880d6a54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555583921588 CR3: 0000000045de7000 CR4: 0000000000352ef0 Call Trace: veth_poll+0x19c/0x9c0 drivers/net/veth.c:979 __napi_poll.constprop.0+0xba/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 run_ksoftirqd kernel/softirq.c:968 [inline] run_ksoftirqd+0x3a/0x60 kernel/softirq.c:960 smpboot_thread_fn+0x3f7/0xae0 kernel/smpboot.c:164 kthread+0x3c5/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 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: 54 a8 2f fb 45 85 e4 0f 85 db 08 00 00 e8 06 ad 2f 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:ffffc900006cf7e0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff868c7236 RDX: 0000000000000098 RSI: ffffffff868c694a RDI: 00000000000004c0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 1ffff920000d9f0a R14: ffffc900006cfc80 R15: ffff88802a024000 FS: 0000000000000000(0000) GS:ffff8880d6a54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555583921588 CR3: 0000000045de7000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 54 push %rsp 1: a8 2f test $0x2f,%al 3: fb sti 4: 45 85 e4 test %r12d,%r12d 7: 0f 85 db 08 00 00 jne 0x8e8 d: e8 06 ad 2f fb call 0xfb2fad18 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