general protection fault, probably for non-canonical address 0xdffffc000000001c: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000e0-0x00000000000000e7] CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.2.0-rc7-next-20230206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:__netif_receive_skb_core+0x305/0x3a40 net/core/dev.c:5298 Code: 49 bd 00 00 00 00 00 fc ff df c7 44 24 10 01 00 00 00 c6 44 24 2f 00 e8 a9 a5 71 f9 48 8d bb e0 00 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 5e 31 00 00 49 8d be 90 00 RSP: 0018:ffffc900001479d0 EFLAGS: 00010202 RAX: 000000000000001c RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff88801677ba80 RSI: ffffffff8812bfd7 RDI: 00000000000000e0 RBP: 0000000000000000 R08: 0000000000000003 R09: 000000000000ffff R10: 0000000000000000 R11: 0000000000000001 R12: ffff88802cbab000 R13: dffffc0000000000 R14: ffff88802cbab000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020257000 CR3: 0000000053b5f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5483 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599 process_backlog+0x13e/0x6d0 net/core/dev.c:5927 __napi_poll+0xb3/0x520 net/core/dev.c:6488 napi_poll net/core/dev.c:6555 [inline] net_rx_action+0x8d7/0xc50 net/core/dev.c:6665 __do_softirq+0x2e3/0xae3 kernel/softirq.c:571 run_ksoftirqd kernel/softirq.c:934 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:926 smpboot_thread_fn+0x659/0xa30 kernel/smpboot.c:164 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__netif_receive_skb_core+0x305/0x3a40 net/core/dev.c:5298 Code: 49 bd 00 00 00 00 00 fc ff df c7 44 24 10 01 00 00 00 c6 44 24 2f 00 e8 a9 a5 71 f9 48 8d bb e0 00 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 5e 31 00 00 49 8d be 90 00 RSP: 0018:ffffc900001479d0 EFLAGS: 00010202 RAX: 000000000000001c RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff88801677ba80 RSI: ffffffff8812bfd7 RDI: 00000000000000e0 RBP: 0000000000000000 R08: 0000000000000003 R09: 000000000000ffff R10: 0000000000000000 R11: 0000000000000001 R12: ffff88802cbab000 R13: dffffc0000000000 R14: ffff88802cbab000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020257000 CR3: 0000000053b5f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 7: fc ff df a: c7 44 24 10 01 00 00 movl $0x1,0x10(%rsp) 11: 00 12: c6 44 24 2f 00 movb $0x0,0x2f(%rsp) 17: e8 a9 a5 71 f9 callq 0xf971a5c5 1c: 48 8d bb e0 00 00 00 lea 0xe0(%rbx),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 74 08 je 0x3b 33: 3c 03 cmp $0x3,%al 35: 0f 8e 5e 31 00 00 jle 0x3199 3b: 49 rex.WB 3c: 8d .byte 0x8d 3d: be .byte 0xbe 3e: 90 nop