./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2846251191 <...> Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. execve("./syz-executor2846251191", ["./syz-executor2846251191"], 0x7ffcbfadf4d0 /* 10 vars */) = 0 brk(NULL) = 0x555556453000 brk(0x555556453c40) = 0x555556453c40 arch_prctl(ARCH_SET_FS, 0x555556453300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2846251191", 4096) = 28 brk(0x555556474c40) = 0x555556474c40 brk(0x555556475000) = 0x555556475000 mprotect(0x7fa3ceef3000, 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 [ 24.520050][ T22] audit: type=1400 audit(1652369610.969:73): avc: denied { execmem } for pid=303 comm="syz-executor284" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.539673][ T22] audit: type=1400 audit(1652369610.969:74): avc: denied { prog_load } for pid=303 comm="syz-executor284" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 24.558984][ T22] audit: type=1400 audit(1652369611.009:75): avc: denied { prog_run } for pid=303 comm="syz-executor284" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 24.559649][ T303] kasan: CONFIG_KASAN_INLINE enabled [ 24.583359][ T303] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.591509][ T303] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 24.598420][ T303] CPU: 0 PID: 303 Comm: syz-executor284 Not tainted 5.4.180-syzkaller-00005-gb2ca0128d238 #0 [ 24.608531][ T303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.618576][ T303] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 24.624261][ T303] 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 [ 24.643840][ T303] RSP: 0018:ffff8881de677a90 EFLAGS: 00010206 [ 24.649869][ T303] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881e2eb1f80 [ 24.657809][ T303] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 24.665747][ T303] RBP: ffff8881de677ae0 R08: ffffffff83625ac3 R09: ffff8881de677b70 [ 24.673686][ T303] R10: ffffed103bccef70 R11: 1ffff1103bccef6e R12: dffffc0000000000 [ 24.681623][ T303] R13: 0000000000008000 R14: ffff8881de6d5812 R15: ffff8881de6d5aa0 [ 24.689561][ T303] FS: 0000555556453300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 24.698453][ T303] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.705002][ T303] CR2: 0000561a741d80c8 CR3: 00000001de5de000 CR4: 00000000003406f0 [ 24.712944][ T303] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.720889][ T303] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.728826][ T303] Call Trace: [ 24.732092][ T303] ? bpf_test_run+0x260/0x640 [ 24.736737][ T303] ? bpf_prog_test_run_skb+0x7a2/0xf00 [ 24.742161][ T303] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 24.747934][ T303] ? __se_sys_bpf+0x2b7b/0xb990 [ 24.752755][ T303] ? __schedule+0x8d3/0xfc0 [ 24.757225][ T303] ? cgroup_update_frozen+0x139/0x360 [ 24.762563][ T303] ? _raw_spin_lock_irq+0x6d/0x170 [ 24.767657][ T303] ? _raw_spin_lock_irq+0x6d/0x170 [ 24.772754][ T303] ? ptrace_stop+0x6eb/0xa30 [ 24.777336][ T303] ? syscall_trace_enter+0x5c2/0x860 [ 24.782593][ T303] ? __fpregs_load_activate+0x163/0x310 [ 24.788116][ T303] ? do_syscall_64+0xcb/0x1c0 [ 24.792768][ T303] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 24.798820][ T303] Modules linked in: [ 24.802746][ T303] ---[ end trace d08066d7f9f214bc ]--- [ 24.808360][ T303] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 24.814079][ T303] 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 [ 24.833684][ T303] RSP: 0018:ffff8881de677a90 EFLAGS: 00010206 [ 24.839729][ T303] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881e2eb1f80 [ 24.847737][ T303] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 24.855801][ T303] RBP: ffff8881de677ae0 R08: ffffffff83625ac3 R09: ffff8881de677b70 [ 24.863874][ T303] R10: ffffed103bccef70 R11: 1ffff1103bccef6e R12: dffffc0000000000 [ 24.871837][ T303] R13: 0000000000008000 R14: ffff8881de6d5812 R15: ffff8881de6d5aa0 [ 24.879826][ T303] FS: 0000555556453300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 24.888749][ T303] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.895327][ T303] CR2: 0000561a741d80c8 CR3: 00000001de5de000 CR4: 00000000003406f0 [ 24.903281][ T303] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.911250][ T303] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.919212][ T303] Kernel panic - not syncing: Fatal exception [ 24.925451][ T303] Kernel Offset: disabled [ 24.929750][ T303] Rebooting in 86400 seconds..