general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 5626 Comm: syz-executor.0 Not tainted 6.1.78-syzkaller-00009-g25216be1ac5e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:dev_map_generic_redirect+0x90/0x7d0 kernel/bpf/devmap.c:664 Code: f1 f1 00 f2 f2 f2 4b 89 04 26 43 c7 44 26 0f f3 f3 f3 f3 43 c6 44 26 13 f3 e8 ac 07 de ff 48 89 d8 48 c1 e8 03 48 89 44 24 48 <42> 80 3c 20 00 74 08 48 89 df e8 f1 04 25 00 48 89 5c 24 18 4c 8b RSP: 0018:ffffc900035d76c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc90002fcb000 RSI: 0000000000000414 RDI: 0000000000000415 ---------------- Code disassembly (best guess): 0: f1 int1 1: f1 int1 2: 00 f2 add %dh,%dl 4: f2 f2 4b 89 04 26 repnz repnz mov %rax,(%r14,%r12,1) a: 43 c7 44 26 0f f3 f3 movl $0xf3f3f3f3,0xf(%r14,%r12,1) 11: f3 f3 13: 43 c6 44 26 13 f3 movb $0xf3,0x13(%r14,%r12,1) 19: e8 ac 07 de ff call 0xffde07ca 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 48 89 44 24 48 mov %rax,0x48(%rsp) * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 f1 04 25 00 call 0x25052a 39: 48 89 5c 24 18 mov %rbx,0x18(%rsp) 3e: 4c rex.WR 3f: 8b .byte 0x8b