./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor457703614 <...> Warning: Permanently added '10.128.1.153' (ED25519) to the list of known hosts. execve("./syz-executor457703614", ["./syz-executor457703614"], 0x7ffddfe9b5d0 /* 10 vars */) = 0 brk(NULL) = 0x55557a6d4000 brk(0x55557a6d4d00) = 0x55557a6d4d00 arch_prctl(ARCH_SET_FS, 0x55557a6d4380) = 0 set_tid_address(0x55557a6d4650) = 5817 set_robust_list(0x55557a6d4660, 24) = 0 rseq(0x55557a6d4ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor457703614", 4096) = 27 getrandom("\x6e\x3f\x2f\x68\x9b\xbe\x8b\x3f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557a6d4d00 brk(0x55557a6f5d00) = 0x55557a6f5d00 brk(0x55557a6f6000) = 0x55557a6f6000 mprotect(0x7f9cedd4e000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 executing program write(1, "executing program\n", 18) = 18 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [ 69.112069][ T30] audit: type=1400 audit(1751598306.095:62): avc: denied { write } for pid=5813 comm="strace-static-x" path="pipe:[4460]" dev="pipefs" ino=4460 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 socketpair(AF_UNIX, SOCK_SEQPACKET, 0, [4, 5]) = 0 ioctl(5, SIOCGIFINDEX, {ifr_name="lo", ifr_ifindex=1}) = 0 sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x2c\x00\x00\x00\x24\x00\x0f\x0d\x2d\xbd\x70\x00\x00\x00\x00\x00\x60\x00\x00\x00\x01\x00\x00\x00\x00\x00\x0a\x00\xff\xff\xff\xff\x00\x00\xff\xff\x08\x00\x01\x00\x64\x72\x72\x00", iov_len=44}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_EOR|MSG_NOSIGNAL|MSG_BATCH) = 44 [ 69.143779][ T30] audit: type=1400 audit(1751598306.125:63): avc: denied { execmem } for pid=5817 comm="syz-executor457" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 6 socketpair(AF_UNIX, SOCK_DGRAM, 0, [7, 8]) = 0 ioctl(8, SIOCGIFINDEX, {ifr_name="lo", ifr_ifindex=1}) = 0 [ 69.224811][ T5817] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN NOPTI [ 69.236893][ T5817] KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] [ 69.245283][ T5817] CPU: 1 UID: 0 PID: 5817 Comm: syz-executor457 Not tainted 6.16.0-rc4-syzkaller-00108-g17bbde2e1716 #0 PREEMPT(full) [ 69.257682][ T5817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 69.267713][ T5817] RIP: 0010:__list_del_entry_valid_or_report+0x20/0x200 [ 69.274659][ T5817] Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 54 55 53 48 89 fb 48 83 c7 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 8b 01 00 00 48 89 da 48 8b 6b 08 48 b8 00 00 00 [ 69.294260][ T5817] RSP: 0018:ffffc9000410f2e8 EFLAGS: 00010202 [ 69.300311][ T5817] RAX: dffffc0000000000 RBX: 0000000000000050 RCX: 1ffff1100f97af5c [ 69.308267][ T5817] RDX: 000000000000000b RSI: ffffffff898bef4c RDI: 0000000000000058 [ 69.316225][ T5817] RBP: 0000000000000050 R08: 0000000000000005 R09: 0000000000000000 [ 69.324186][ T5817] R10: 00000000000a0000 R11: 0000000000000001 R12: ffffffff8ce802e0 [ 69.332142][ T5817] R13: 0000000000000058 R14: ffffffff8ce802c0 R15: ffff88807cbd7800 [ 69.340098][ T5817] FS: 000055557a6d4380(0000) GS:ffff888124852000(0000) knlGS:0000000000000000 [ 69.349012][ T5817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.355579][ T5817] CR2: 0000200000001fc0 CR3: 00000000721d4000 CR4: 00000000003526f0 [ 69.363550][ T5817] Call Trace: [ 69.366831][ T5817] [ 69.369748][ T5817] drr_qlen_notify+0x24/0x150 [ 69.374426][ T5817] qdisc_tree_reduce_backlog+0x221/0x500 [ 69.380046][ T5817] pie_change+0x86e/0xe70 [ 69.384364][ T5817] ? __debug_object_init+0x2de/0x3d0 [ 69.389639][ T5817] ? __pfx___debug_object_init+0x10/0x10 [ 69.395261][ T5817] ? __pfx_pie_change+0x10/0x10 [ 69.400105][ T5817] ? __pfx_pie_timer+0x10/0x10 [ 69.404855][ T5817] ? lockdep_init_map_type+0x5c/0x280 [ 69.410237][ T5817] pie_init+0x364/0x470 [ 69.414402][ T5817] ? __pfx_pie_init+0x10/0x10 [ 69.419084][ T5817] qdisc_create+0x454/0xfc0 [ 69.423583][ T5817] tc_modify_qdisc+0x12bb/0x2130 [ 69.428531][ T5817] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 69.433825][ T5817] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 69.439103][ T5817] rtnetlink_rcv_msg+0x3c6/0xe90 [ 69.444029][ T5817] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 69.449479][ T5817] ? __lock_acquire+0x622/0x1c90 [ 69.454411][ T5817] netlink_rcv_skb+0x155/0x420 [ 69.459176][ T5817] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 69.464640][ T5817] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 69.469910][ T5817] ? netlink_deliver_tap+0x1ae/0xd30 [ 69.475184][ T5817] ? is_vmalloc_addr+0x86/0xa0 [ 69.479940][ T5817] netlink_unicast+0x53d/0x7f0 [ 69.484684][ T5817] ? __pfx_netlink_unicast+0x10/0x10 [ 69.489953][ T5817] netlink_sendmsg+0x8d1/0xdd0 [ 69.494697][ T5817] ? __pfx_netlink_sendmsg+0x10/0x10 [ 69.499965][ T5817] ____sys_sendmsg+0xa98/0xc70 [ 69.504710][ T5817] ? copy_msghdr_from_user+0x10a/0x160 [ 69.510174][ T5817] ? __pfx_____sys_sendmsg+0x10/0x10 [ 69.515498][ T5817] ? rcu_is_watching+0x12/0xc0 [ 69.520258][ T5817] ? trace_sched_exit_tp+0xde/0x130 [ 69.525446][ T5817] ___sys_sendmsg+0x134/0x1d0 [ 69.530114][ T5817] ? __pfx____sys_sendmsg+0x10/0x10 [ 69.535308][ T5817] ? ptrace_stop.part.0+0x732/0x950 [ 69.540492][ T5817] __sys_sendmsg+0x16d/0x220 [ 69.545067][ T5817] ? __pfx___sys_sendmsg+0x10/0x10 [ 69.550169][ T5817] ? lockdep_hardirqs_on+0x7c/0x110 [ 69.555357][ T5817] ? _raw_spin_unlock_irq+0x2e/0x50 [ 69.560543][ T5817] ? ptrace_notify+0xf1/0x130 [ 69.565209][ T5817] do_syscall_64+0xcd/0x4c0 [ 69.569701][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.575576][ T5817] RIP: 0033:0x7f9cedcdb669 [ 69.579975][ T5817] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 69.599569][ T5817] RSP: 002b:00007ffd67f881b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 69.607963][ T5817] RAX: ffffffffffffffda RBX: 00007ffd67f88388 RCX: 00007f9cedcdb669 [ 69.615920][ T5817] RDX: 0000000000004000 RSI: 0000200000000280 RDI: 0000000000000006 [ 69.623874][ T5817] RBP: 00007f9cedd4e610 R08: 0000000000000004 R09: 00007ffd67f88388 [ 69.631829][ T5817] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001 [ 69.639782][ T5817] R13: 00007ffd67f88378 R14: 0000000000000001 R15: 0000000000000001 [ 69.647753][ T5817] [ 69.650755][ T5817] Modules linked in: [ 69.654715][ T5817] ---[ end trace 0000000000000000 ]--- [ 69.657251][ T30] audit: type=1400 audit(1751598306.645:64): avc: denied { read } for pid=5168 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 69.660184][ T5817] RIP: 0010:__list_del_entry_valid_or_report+0x20/0x200 [ 69.683755][ T30] audit: type=1400 audit(1751598306.645:65): avc: denied { search } for pid=5168 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 69.688861][ T5817] Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 54 55 53 48 89 fb 48 83 c7 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 8b 01 00 00 48 89 da 48 8b 6b 08 48 b8 00 00 00 [ 69.729826][ T30] audit: type=1400 audit(1751598306.645:66): avc: denied { search } for pid=5168 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 69.729857][ T30] audit: type=1400 audit(1751598306.645:67): avc: denied { add_name } for pid=5168 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 69.751165][ T5817] RSP: 0018:ffffc9000410f2e8 EFLAGS: 00010202 [ 69.751184][ T5817] RAX: dffffc0000000000 RBX: 0000000000000050 RCX: 1ffff1100f97af5c [ 69.785836][ T5817] RDX: 000000000000000b RSI: ffffffff898bef4c RDI: 0000000000000058 [ 69.785876][ T30] audit: type=1400 audit(1751598306.645:68): avc: denied { create } for pid=5168 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 69.793791][ T5817] RBP: 0000000000000050 R08: 0000000000000005 R09: 0000000000000000 [ 69.814579][ T30] audit: type=1400 audit(1751598306.645:69): avc: denied { append open } for pid=5168 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=5 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 69.822310][ T5817] R10: 00000000000a0000 R11: 0000000000000001 R12: ffffffff8ce802e0 [ 69.845698][ T30] audit: type=1400 audit(1751598306.645:70): avc: denied { getattr } for pid=5168 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=5 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 69.853214][ T5817] R13: 0000000000000058 R14: ffffffff8ce802c0 R15: ffff88807cbd7800 [ 69.883864][ T5817] FS: 000055557a6d4380(0000) GS:ffff888124852000(0000) knlGS:0000000000000000 [ 69.892828][ T5817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.899472][ T5817] CR2: 0000200000001fc0 CR3: 00000000721d4000 CR4: 00000000003526f0 [ 69.907456][ T5817] Kernel panic - not syncing: Fatal exception in interrupt [ 69.915282][ T5817] Kernel Offset: disabled [ 69.919592][ T5817] Rebooting in 86400 seconds..