./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3910509423 <...> forked to background, child pid 192 no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 16.128406][ T23] kauditd_printk_skb: 60 callbacks suppressed [ 16.128414][ T23] audit: type=1400 audit(1669624461.830:71): 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 [ 16.132496][ T23] audit: type=1400 audit(1669624461.830:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[765]" dev="pipefs" ino=765 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts. execve("./syz-executor3910509423", ["./syz-executor3910509423"], 0x7ffc0ea3bd30 /* 10 vars */) = 0 brk(NULL) = 0x5555561b8000 brk(0x5555561b8c40) = 0x5555561b8c40 arch_prctl(ARCH_SET_FS, 0x5555561b8300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3910509423", 4096) = 28 brk(0x5555561d9c40) = 0x5555561d9c40 brk(0x5555561da000) = 0x5555561da000 mprotect(0x7fcfd3e46000, 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_ACT, insn_cnt=14, insns=0x200009c0, license="syzkaller", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 3 [ 23.717108][ T23] audit: type=1400 audit(1669624469.420:73): avc: denied { execmem } for pid=304 comm="syz-executor391" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.736672][ T23] audit: type=1400 audit(1669624469.420:74): avc: denied { prog_load } for pid=304 comm="syz-executor391" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 23.737306][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 23.755889][ T23] audit: type=1400 audit(1669624469.440:75): avc: denied { prog_run } for pid=304 comm="syz-executor391" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 23.780227][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.788286][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 23.795193][ T304] CPU: 1 PID: 304 Comm: syz-executor391 Not tainted 5.4.210-syzkaller-00006-gc80a5b2e7f63 #0 [ 23.805301][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 23.815348][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 23.821816][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 a0 64 14 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 3e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 [ 23.841396][ T304] RSP: 0018:ffff8881dd7674b8 EFLAGS: 00010203 [ 23.847438][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 23.855379][ T304] RDX: ffff8881de340000 RSI: 0000000000000080 RDI: 000000000000011c [ 23.863324][ T304] RBP: 0000000000000080 R08: ffffffff837f3ed7 R09: ffff8881dd767760 [ 23.871264][ T304] R10: ffffed103baeceee R11: 1ffff1103baeceec R12: dffffc0000000000 [ 23.879315][ T304] R13: fffffffa79a4ce14 R14: 0000000000000000 R15: ffff8881e29d6812 [ 23.887515][ T304] FS: 00005555561b8300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.896519][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.903084][ T304] CR2: 00007f116d277a70 CR3: 00000001e2f51000 CR4: 00000000003406e0 [ 23.911036][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.918981][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.926921][ T304] Call Trace: [ 23.930187][ T304] ? __kasan_kmalloc+0x131/0x1e0 [ 23.935103][ T304] ? kmem_cache_alloc+0xd0/0x210 [ 23.940011][ T304] ? build_skb+0x27/0x450 [ 23.944318][ T304] ? bpf_prog_test_run_skb+0x3f6/0xf80 [ 23.949754][ T304] ? __se_sys_bpf+0x2bbc/0xbba0 [ 23.954756][ T304] ? do_syscall_64+0xcb/0x1c0 [ 23.959406][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 23.965444][ T304] ? common_interrupt+0xa/0xf [ 23.970123][ T304] ? ktime_get+0xfd/0x130 [ 23.975392][ T304] ? bpf_test_run+0x2b4/0x6a0 [ 23.980036][ T304] ? bpf_ctx_init+0x1b0/0x1b0 [ 23.984681][ T304] ? bpf_prog_test_run_skb+0x842/0xf80 [ 23.990108][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 23.995877][ T304] ? __fdget+0x14f/0x200 [ 24.000087][ T304] ? bpf_prog_get+0x183/0x1b0 [ 24.004730][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 24.010504][ T304] ? __se_sys_bpf+0x2bbc/0xbba0 [ 24.015323][ T304] ? check_preemption_disabled+0x9e/0x330 [ 24.021006][ T304] ? rcu_softirq_qs+0x90/0x90 [ 24.025647][ T304] ? debug_smp_processor_id+0x20/0x20 [ 24.030982][ T304] ? check_preemption_disabled+0x9e/0x330 [ 24.036679][ T304] ? check_preemption_disabled+0x9e/0x330 [ 24.042366][ T304] ? debug_smp_processor_id+0x20/0x20 [ 24.047706][ T304] ? switch_mm_irqs_off+0x542/0x960 [ 24.052877][ T304] ? debug_smp_processor_id+0x20/0x20 [ 24.058221][ T304] ? __x64_sys_bpf+0x80/0x80 [ 24.062783][ T304] ? switch_mm+0x100/0x100 [ 24.067172][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 24.072338][ T304] ? finish_task_switch+0x130/0x560 [ 24.077502][ T304] ? __schedule+0x98e/0x1050 [ 24.082056][ T304] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 24.087133][ T304] ? _raw_spin_lock_irqsave+0x210/0x210 [ 24.092642][ T304] ? cgroup_update_frozen+0x139/0x360 [ 24.097977][ T304] ? cgroup_update_frozen+0x139/0x360 [ 24.103326][ T304] ? cgroup_leave_frozen+0x13b/0x290 [ 24.108587][ T304] ? ptrace_stop+0x6eb/0xa30 [ 24.113148][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 24.118327][ T304] ? ptrace_notify+0x248/0x340 [ 24.123065][ T304] ? do_notify_parent+0xa40/0xa40 [ 24.128063][ T304] ? check_preemption_disabled+0x154/0x330 [ 24.133842][ T304] ? syscall_trace_enter+0x652/0x940 [ 24.139097][ T304] ? switch_fpu_return+0x10/0x10 [ 24.144001][ T304] ? do_syscall_64+0xcb/0x1c0 [ 24.148651][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 24.154679][ T304] Modules linked in: [ 24.158604][ T304] ---[ end trace 76c071e7264fde2d ]--- [ 24.164046][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 24.170546][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 a0 64 14 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 3e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 [ 24.190142][ T304] RSP: 0018:ffff8881dd7674b8 EFLAGS: 00010203 [ 24.196200][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 24.204146][ T304] RDX: ffff8881de340000 RSI: 0000000000000080 RDI: 000000000000011c [ 24.212130][ T304] RBP: 0000000000000080 R08: ffffffff837f3ed7 R09: ffff8881dd767760 [ 24.220117][ T304] R10: ffffed103baeceee R11: 1ffff1103baeceec R12: dffffc0000000000 [ 24.228091][ T304] R13: fffffffa79a4ce14 R14: 0000000000000000 R15: ffff8881e29d6812 [ 24.236063][ T304] FS: 00005555561b8300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.244962][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.251546][ T304] CR2: 00007f116d277a70 CR3: 00000001e2f51000 CR4: 00000000003406e0 [ 24.259525][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.267496][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.275443][ T304] Kernel panic - not syncing: Fatal exception [ 24.281637][ T304] Kernel Offset: disabled [ 24.285936][ T304] Rebooting in 86400 seconds..