./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor217372319 <...> Warning: Permanently added '10.128.0.189' (ED25519) to the list of known hosts. execve("./syz-executor217372319", ["./syz-executor217372319"], 0x7ffe94a9f200 /* 10 vars */) = 0 brk(NULL) = 0x55555593a000 brk(0x55555593ad00) = 0x55555593ad00 arch_prctl(ARCH_SET_FS, 0x55555593a380) = 0 set_tid_address(0x55555593a650) = 5066 set_robust_list(0x55555593a660, 24) = 0 rseq(0x55555593aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor217372319", 4096) = 27 getrandom("\x46\xff\x79\x96\x0c\x37\x69\x3c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555593ad00 brk(0x55555595bd00) = 0x55555595bd00 brk(0x55555595c000) = 0x55555595c000 mprotect(0x7f8dd6b13000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555593a650) = 5067 ./strace-static-x86_64: Process 5067 attached [pid 5067] set_robust_list(0x55555593a660, 24) = 0 [pid 5067] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setsid() = 1 [pid 5067] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5067] unshare(CLONE_NEWNS) = 0 [pid 5067] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5067] unshare(CLONE_NEWIPC) = 0 [pid 5067] unshare(CLONE_NEWCGROUP) = 0 [pid 5067] unshare(CLONE_NEWUTS) = 0 [pid 5067] unshare(CLONE_SYSVSEM) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "16777216", 8) = 8 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "536870912", 9) = 9 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "8192", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5067] close(3) = 0 [pid 5067] getpid() = 1 [pid 5067] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<lock){++..}-{2:2}, at: in6_dump_addrs+0xb8/0x1de0 [ 59.323409][ T5067] [ 59.323409][ T5067] stack backtrace: [ 59.329323][ T5067] CPU: 1 PID: 5067 Comm: syz-executor217 Not tainted 6.8.0-rc5-syzkaller-01618-gf8cbf6bde4c8 #0 [ 59.339727][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 59.349772][ T5067] Call Trace: [ 59.353051][ T5067] [ 59.355974][ T5067] dump_stack_lvl+0x1e7/0x2e0 [ 59.360653][ T5067] ? __pfx_dump_stack_lvl+0x10/0x10 [ 59.365839][ T5067] ? __pfx__printk+0x10/0x10 [ 59.370415][ T5067] ? in6_dump_addrs+0xb8/0x1de0 [ 59.375261][ T5067] lockdep_rcu_suspicious+0x220/0x340 [ 59.380622][ T5067] in6_dump_addrs+0x1b47/0x1de0 [ 59.385471][ T5067] ? __pfx_in6_dump_addrs+0x10/0x10 [ 59.390662][ T5067] inet6_dump_addr+0x1597/0x1690 [ 59.395591][ T5067] ? __pfx_inet6_dump_addr+0x10/0x10 [ 59.400867][ T5067] ? __mutex_trylock_common+0x182/0x2e0 [ 59.406411][ T5067] netlink_dump+0x6a6/0xda0 [ 59.410926][ T5067] ? __pfx_netlink_dump+0x10/0x10 [ 59.415955][ T5067] ? __pfx_lock_acquire+0x10/0x10 [ 59.421057][ T5067] __netlink_dump_start+0x59d/0x780 [ 59.426256][ T5067] rtnetlink_rcv_msg+0xcf7/0x10d0 [ 59.431294][ T5067] ? __pfx_inet6_dump_ifacaddr+0x10/0x10 [ 59.436924][ T5067] ? rtnetlink_rcv_msg+0x208/0x10d0 [ 59.442116][ T5067] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 59.447567][ T5067] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 59.453712][ T5067] ? __pfx_validate_chain+0x10/0x10 [ 59.458894][ T5067] ? __pfx_validate_chain+0x10/0x10 [ 59.464103][ T5067] ? mark_lock+0x9a/0x350 [ 59.468429][ T5067] ? __pfx_validate_chain+0x10/0x10 [ 59.473629][ T5067] ? __lock_acquire+0x1345/0x1fd0 [ 59.478657][ T5067] ? mark_lock+0x9a/0x350 [ 59.482990][ T5067] ? __lock_acquire+0x1345/0x1fd0 [ 59.488012][ T5067] ? __pfx_inet6_dump_ifacaddr+0x10/0x10 [ 59.493660][ T5067] netlink_rcv_skb+0x1e3/0x430 [ 59.498420][ T5067] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 59.503875][ T5067] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 59.509164][ T5067] ? netlink_deliver_tap+0x2e/0x1b0 [ 59.514373][ T5067] netlink_unicast+0x7ea/0x980 [ 59.519186][ T5067] ? __pfx_netlink_unicast+0x10/0x10 [ 59.524459][ T5067] ? __virt_addr_valid+0x44e/0x520 [ 59.529579][ T5067] ? __phys_addr_symbol+0x2f/0x70 [ 59.534615][ T5067] ? __check_object_size+0x4bb/0xa00 [ 59.539905][ T5067] ? bpf_lsm_netlink_send+0x9/0x10 [ 59.545011][ T5067] netlink_sendmsg+0x8e0/0xcb0 [ 59.549787][ T5067] ? __pfx_netlink_sendmsg+0x10/0x10 [ 59.555073][ T5067] ? __import_iovec+0x552/0x890 [ 59.559918][ T5067] ? aa_sock_msg_perm+0x91/0x160 [ 59.564848][ T5067] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 59.570121][ T5067] ? security_socket_sendmsg+0x87/0xb0 [ 59.575589][ T5067] ? __pfx_netlink_sendmsg+0x10/0x10 [ 59.580898][ T5067] __sock_sendmsg+0x221/0x270 [ 59.585610][ T5067] ____sys_sendmsg+0x525/0x7d0 [ 59.590372][ T5067] ? __pfx_____sys_sendmsg+0x10/0x10 [ 59.595651][ T5067] ? do_raw_spin_lock+0x14e/0x370 [ 59.600673][ T5067] __sys_sendmsg+0x2b0/0x3a0 [ 59.605258][ T5067] ? __pfx___sys_sendmsg+0x10/0x10 [ 59.610367][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 59.616696][ T5067] ? _raw_spin_unlock_irq+0x2e/0x50 [ 59.621884][ T5067] ? ptrace_notify+0x278/0x380 [ 59.626640][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 59.632953][ T5067] ? exc_page_fault+0x587/0x870 [ 59.637795][ T5067] ? syscall_trace_enter+0x5e/0x150 [ 59.642983][ T5067] do_syscall_64+0xf9/0x240 [ 59.647477][ T5067] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 59.653358][ T5067] RIP: 0033:0x7f8dd6aa06b9 [ 59.657764][ T5067] Code: 48 83 c4 28 c3 e8 27 18 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 [ 59.677355][ T5067] RSP: 002b:00007fff3a285c38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [pid 5067] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x18\x00\x00\x00\x3e\x00\x29\x02\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x00\x00\x04\x00\x00\x00", iov_len=24}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 24 [pid 5067] exit_group(1) = ? [pid 5067] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5067, si_uid=0, si_status=1, si_utime=0, si_stime=15 /* 0.15 s */} --- exit_group(0) = ? +++ exited with 0 +++ [ 59.685761][ T5067] RAX: ffffffffffffffda RBX: 00007f8dd6