./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3584773626 <...> Warning: Permanently added '10.128.0.173' (ECDSA) to the list of known hosts. execve("./syz-executor3584773626", ["./syz-executor3584773626"], 0x7ffc08277a20 /* 10 vars */) = 0 brk(NULL) = 0x555557181000 brk(0x555557181c40) = 0x555557181c40 arch_prctl(ARCH_SET_FS, 0x555557181300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3584773626", 4096) = 28 brk(0x5555571a2c40) = 0x5555571a2c40 brk(0x5555571a3000) = 0x5555571a3000 mprotect(0x7f5d9fe72000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SCHED_CLS, insn_cnt=4, insns=0x20000c00, license="GPL"}, 21) = 3 [ 21.295917][ T22] audit: type=1400 audit(1652368155.740:73): avc: denied { execmem } for pid=304 comm="syz-executor358" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.315404][ T22] audit: type=1400 audit(1652368155.740:74): avc: denied { prog_load } for pid=304 comm="syz-executor358" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.316112][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 21.334631][ T22] audit: type=1400 audit(1652368155.760:75): avc: denied { prog_run } for pid=304 comm="syz-executor358" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.359024][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.367068][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 21.373978][ T304] CPU: 0 PID: 304 Comm: syz-executor358 Not tainted 5.4.180-syzkaller-00005-gb2ca0128d238 #0 [ 21.384084][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.394127][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 21.399813][ T304] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 13 44 2a fe bb 40 01 00 00 49 03 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 f5 43 2a fe 48 8b 1b 48 83 c3 68 [ 21.419379][ T304] RSP: 0018:ffff8881dd5ffa90 EFLAGS: 00010206 [ 21.425407][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dfac6e40 [ 21.433343][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 21.441278][ T304] RBP: ffff8881dd5ffae0 R08: ffffffff83625ac3 R09: ffff8881dd5ffb70 [ 21.449216][ T304] R10: ffffed103babff70 R11: 1ffff1103babff6e R12: dffffc0000000000 [ 21.457153][ T304] R13: 0000000000008000 R14: ffff8881dd621012 R15: ffff8881dd6212a0 [ 21.465091][ T304] FS: 0000555557181300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.473985][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.480543][ T304] CR2: 0000000001f48258 CR3: 00000001dd4f0000 CR4: 00000000003406f0 [ 21.488498][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.496443][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.504385][ T304] Call Trace: [ 21.507655][ T304] ? bpf_test_run+0x260/0x640 [ 21.512303][ T304] ? bpf_prog_test_run_skb+0x7a2/0xf00 [ 21.517730][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 21.523502][ T304] ? __se_sys_bpf+0x2b7b/0xb990 [ 21.528318][ T304] ? __schedule+0x8d3/0xfc0 [ 21.532788][ T304] ? cgroup_update_frozen+0x139/0x360 [ 21.538122][ T304] ? _raw_spin_lock_irq+0x6d/0x170 [ 21.543195][ T304] ? _raw_spin_lock_irq+0x6d/0x170 [ 21.548272][ T304] ? ptrace_stop+0x6eb/0xa30 [ 21.552832][ T304] ? syscall_trace_enter+0x5c2/0x860 [ 21.558087][ T304] ? check_preemption_disabled+0xde/0x2c0 [ 21.563769][ T304] ? do_syscall_64+0xcb/0x1c0 [ 21.568413][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.574440][ T304] Modules linked in: [ 21.578332][ T304] ---[ end trace 3fcb5726af9dc936 ]--- [ 21.583802][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 21.589514][ T304] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 13 44 2a fe bb 40 01 00 00 49 03 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 f5 43 2a fe 48 8b 1b 48 83 c3 68 [ 21.609115][ T304] RSP: 0018:ffff8881dd5ffa90 EFLAGS: 00010206 [ 21.615158][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dfac6e40 [ 21.623119][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 21.631186][ T304] RBP: ffff8881dd5ffae0 R08: ffffffff83625ac3 R09: ffff8881dd5ffb70 [ 21.639151][ T304] R10: ffffed103babff70 R11: 1ffff1103babff6e R12: dffffc0000000000 [ 21.647099][ T304] R13: 0000000000008000 R14: ffff8881dd621012 R15: ffff8881dd6212a0 [ 21.655065][ T304] FS: 0000555557181300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.663990][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.670564][ T304] CR2: 0000000001f48258 CR3: 00000001dd4f0000 CR4: 00000000003406f0 [ 21.678510][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.686474][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.694439][ T304] Kernel panic - not syncing: Fatal exception [ 21.700646][ T304] Kernel Offset: disabled [ 21.704949][ T304] Rebooting in 86400 seconds..