kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 354 Comm: syz-executor120 Not tainted 5.4.81-syzkaller-00864-g616dba5e94cf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:cgroup_ancestor include/linux/cgroup.h:587 [inline] RIP: 0010:____bpf_skb_ancestor_cgroup_id net/core/filter.c:4118 [inline] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x270 net/core/filter.c:4107 Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d0 aa 28 fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 2e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 RSP: 0018:ffff8881e88f7558 EFLAGS: 00010203 RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c RBP: 0000000000000080 R08: ffffffff8368f437 R09: ffff8881e88f77e0 R10: ffffed103d11eefe R11: 0000000000000000 R12: dffffc0000000000 R13: dffffc0000000000 R14: fffffffffffffe00 R15: ffff8881e8d22012 FS: 00000000009c3880(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0cd1b48000 CR3: 00000001ef14e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_prog_dcdd7aeecda69f3f+0x9d0/0x1000 bpf_call_func include/linux/filter.h:608 [inline] bpf_test_run+0x278/0x650 net/bpf/test_run.c:44 bpf_prog_test_run_skb+0x7ef/0x1190 net/bpf/test_run.c:310 bpf_prog_test_run kernel/bpf/syscall.c:2123 [inline] __do_sys_bpf+0x3212/0xbfc0 kernel/bpf/syscall.c:2906 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4404a9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fffe9fadec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004404a9 RDX: 0000000000000040 RSI: 0000000020000280 RDI: 000000000000000a RBP: 00000000006cb018 R08: 0000000000000000 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401cb0 R13: 0000000000401d40 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 3066d28a9290449f ]--- RIP: 0010:cgroup_ancestor include/linux/cgroup.h:587 [inline] RIP: 0010:____bpf_skb_ancestor_cgroup_id net/core/filter.c:4118 [inline] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x270 net/core/filter.c:4107 Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d0 aa 28 fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 2e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 RSP: 0018:ffff8881e88f7558 EFLAGS: 00010203 RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c