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: 22163 Comm: syz-executor.5 Not tainted 6.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:bpf_prog_offload_verifier_prep+0xaa/0x170 kernel/bpf/offload.c:295 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a1 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 10 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 93 00 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffffc900002ef7f8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffc900003d8000 RCX: ffffc9000a8a3000 RDX: 0000000000000000 RSI: ffffffff81a926d6 RDI: ffff88807a785190 RBP: ffff88807a785180 R08: 0000000000000001 R09: fffffbfff1991d15 R10: ffffffff8cc8e8af R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000005 R14: 0000000000000001 R15: ffffc900003d8050 FS: 00007fd31fd0a6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5ecef9d988 CR3: 00000000262f8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_check+0x566f/0xabf0 kernel/bpf/verifier.c:19762 bpf_prog_load+0x153a/0x2260 kernel/bpf/syscall.c:2708 __sys_bpf+0xbb6/0x4e60 kernel/bpf/syscall.c:5335 __do_sys_bpf kernel/bpf/syscall.c:5439 [inline] __se_sys_bpf kernel/bpf/syscall.c:5437 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5437 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd31f07cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd31fd0a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fd31f19c050 RCX: 00007fd31f07cae9 RDX: 0000000000000090 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007fd31f0c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fd31f19c050 R15: 00007fffeb6c8618 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bpf_prog_offload_verifier_prep+0xaa/0x170 kernel/bpf/offload.c:295 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a1 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 10 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 93 00 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffffc900002ef7f8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffc900003d8000 RCX: ffffc9000a8a3000 RDX: 0000000000000000 RSI: ffffffff81a926d6 RDI: ffff88807a785190 RBP: ffff88807a785180 R08: 0000000000000001 R09: fffffbfff1991d15 R10: ffffffff8cc8e8af R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000005 R14: 0000000000000001 R15: ffffc900003d8050 FS: 00007fd31fd0a6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5ecef98000 CR3: 00000000262f8000 CR4: 00000000003506e0 DR0: 00000000fff40027 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: df 48 89 fisttps -0x77(%rax) 3: fa cli 4: 48 c1 ea 03 shr $0x3,%rdx 8: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) c: 0f 85 a1 00 00 00 jne 0xb3 12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 19: fc ff df 1c: 4c 8b 65 10 mov 0x10(%rbp),%r12 20: 4c 89 e2 mov %r12,%rdx 23: 48 c1 ea 03 shr $0x3,%rdx * 27: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2b: 0f 85 93 00 00 00 jne 0xc4 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 4d rex.WRB 3c: 8b .byte 0x8b