Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 UID: 0 PID: 8631 Comm: syz.0.777 Not tainted 6.10.0-next-20240719-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__cpu_map_flush+0x42/0xd0 Code: e8 13 8c d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 6d f9 3d 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 4f f9 3d 00 4c 8b 23 48 8d 7b c0 RSP: 0000:ffffc9000ea87a50 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffff88802a77da00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffc9000ea87800 RBP: dffffc0000000000 R08: ffffffff896d655a R09: 1ffffffff1f5fb95 R10: dffffc0000000000 R11: fffffbfff1f5fb96 R12: ffffc9000ea87800 R13: ffffc9000ea877c0 R14: ffffc9000ea87800 R15: dffffc0000000000 FS: 00007ff9d0a056c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff9c61c0000 CR3: 00000000535f4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: xdp_do_check_flushed+0x136/0x240 net/core/filter.c:4304 __napi_poll+0xe4/0x490 net/core/dev.c:6774 napi_poll net/core/dev.c:6840 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6962 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 common_interrupt+0x54/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0033:0x7ff9cfa3b5ab Code: cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 <45> 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01 49 89 47 10 83 RSP: 002b:00007ff9d0a044b0 EFLAGS: 00000202 RAX: 00000000009c0bc8 RBX: 00007ff9d0a04550 RCX: 0000000000000065 RDX: 0000000000000015 RSI: 0000000000000001 RDI: 00007ff9d0a045f0 RBP: 0000000000000102 R08: 00007ff9c5800000 R09: 0000000000000000 R10: 0000000000000000 R11: 00007ff9d0a04560 R12: 0000000000000001 R13: 00007ff9cfbf5fa0 R14: 0000000000000000 R15: 00007ff9d0a045f0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__cpu_map_flush+0x42/0xd0 Code: e8 13 8c d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 6d f9 3d 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 4f f9 3d 00 4c 8b 23 48 8d 7b c0 RSP: 0000:ffffc9000ea87a50 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffff88802a77da00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffc9000ea87800 RBP: dffffc0000000000 R08: ffffffff896d655a R09: 1ffffffff1f5fb95 R10: dffffc0000000000 R11: fffffbfff1f5fb96 R12: ffffc9000ea87800 R13: ffffc9000ea877c0 R14: ffffc9000ea87800 R15: dffffc0000000000 FS: 00007ff9d0a056c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff9c61c0000 CR3: 00000000535f4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 13 8c d6 ff call 0xffd68c18 5: 4c 89 f0 mov %r14,%rax 8: 48 c1 e8 03 shr $0x3,%rax c: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 11: 74 08 je 0x1b 13: 4c 89 f7 mov %r14,%rdi 16: e8 6d f9 3d 00 call 0x3df988 1b: 49 8b 1e mov (%r14),%rbx 1e: 4c 39 f3 cmp %r14,%rbx 21: 74 77 je 0x9a 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 4f f9 3d 00 call 0x3df988 39: 4c 8b 23 mov (%rbx),%r12 3c: 48 8d 7b c0 lea -0x40(%rbx),%rdi