./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1609459259 <...> DUID 00:04:7f:d0:dd:7c:97:ba:cc:c3:b0:c1:8f:9b:5a:1c:d2:07 forked to background, child pid 192 Starting sshd: OK syzkaller syzkaller login: [ 15.057498][ T22] kauditd_printk_skb: 60 callbacks suppressed [ 15.057506][ T22] audit: type=1400 audit(1661043606.599:71): avc: denied { transition } for pid=265 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.061790][ T22] audit: type=1400 audit(1661043606.599:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[10561]" dev="pipefs" ino=10561 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 Warning: Permanently added '10.128.1.13' (ECDSA) to the list of known hosts. execve("./syz-executor1609459259", ["./syz-executor1609459259"], 0x7ffe6fae6b20 /* 10 vars */) = 0 brk(NULL) = 0x55555715e000 brk(0x55555715ec40) = 0x55555715ec40 arch_prctl(ARCH_SET_FS, 0x55555715e300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1609459259", 4096) = 28 brk(0x55555717fc40) = 0x55555717fc40 brk(0x555557180000) = 0x555557180000 mprotect(0x7f0fbe5d5000, 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=0x20000700, license="GPL"}, 21) = 3 [ 21.637655][ T22] audit: type=1400 audit(1661043613.179:73): avc: denied { execmem } for pid=304 comm="syz-executor160" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.657818][ T22] audit: type=1400 audit(1661043613.199:74): avc: denied { prog_load } for pid=304 comm="syz-executor160" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.677245][ T22] audit: type=1400 audit(1661043613.209:75): avc: denied { prog_run } for pid=304 comm="syz-executor160" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.677638][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 21.701641][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.709700][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 21.716632][ T304] CPU: 0 PID: 304 Comm: syz-executor160 Not tainted 5.4.197-syzkaller-00011-gf3c75e616e3f #0 [ 21.726750][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 21.736791][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 21.742706][ 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 23 16 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 05 16 2a fe 48 8b 1b 48 83 c3 68 [ 21.762281][ T304] RSP: 0018:ffff8881dd80fa90 EFLAGS: 00010206 [ 21.768318][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881ddcb2f40 [ 21.776269][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 21.784208][ T304] RBP: ffff8881dd80fae0 R08: ffffffff8362a5e3 R09: ffff8881dd80fb70 [ 21.792157][ T304] R10: ffffed103bb01f70 R11: 1ffff1103bb01f6e R12: dffffc0000000000 [ 21.800094][ T304] R13: 0000000000008000 R14: ffff8881dd83b012 R15: ffff8881dd83b2a0 [ 21.808037][ T304] FS: 000055555715e300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.816936][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.823488][ T304] CR2: 0000000000a40248 CR3: 00000001ddf8d000 CR4: 00000000003406f0 [ 21.831429][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.839378][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.847321][ T304] Call Trace: [ 21.850593][ T304] ? bpf_test_run+0x260/0x640 [ 21.855239][ T304] ? bpf_prog_test_run_skb+0x7a2/0xf00 [ 21.860675][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 21.866445][ T304] ? __se_sys_bpf+0x2b7b/0xb990 [ 21.871263][ T304] ? __schedule+0x8d3/0xfc0 [ 21.875732][ T304] ? cgroup_update_frozen+0x139/0x360 [ 21.881066][ T304] ? _raw_spin_lock_irq+0x6d/0x170 [ 21.886147][ T304] ? _raw_spin_lock_irq+0x6d/0x170 [ 21.891234][ T304] ? ptrace_stop+0x6eb/0xa30 [ 21.895794][ T304] ? syscall_trace_enter+0x5c2/0x860 [ 21.901048][ T304] ? __fpregs_load_activate+0x163/0x310 [ 21.906559][ T304] ? do_syscall_64+0xcb/0x1c0 [ 21.911201][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.917240][ T304] Modules linked in: [ 21.921140][ T304] ---[ end trace a3f48bd1cdd0b94c ]--- [ 21.926578][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 21.932291][ 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 23 16 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 05 16 2a fe 48 8b 1b 48 83 c3 68 [ 21.951891][ T304] RSP: 0018:ffff8881dd80fa90 EFLAGS: 00010206 [ 21.957972][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881ddcb2f40 [ 21.965918][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 21.973879][ T304] RBP: ffff8881dd80fae0 R08: ffffffff8362a5e3 R09: ffff8881dd80fb70 [ 21.981843][ T304] R10: ffffed103bb01f70 R11: 1ffff1103bb01f6e R12: dffffc0000000000 [ 21.989813][ T304] R13: 0000000000008000 R14: ffff8881dd83b012 R15: ffff8881dd83b2a0 [ 21.997817][ T304] FS: 000055555715e300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.006713][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.013294][ T304] CR2: 0000000000a40248 CR3: 00000001ddf8d000 CR4: 00000000003406f0 [ 22.021278][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.029242][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.037198][ T304] Kernel panic - not syncing: Fatal exception [ 22.043392][ T304] Kernel Offset: disabled [ 22.047697][ T304] Rebooting in 86400 seconds..