./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4135343588 <...> Warning: Permanently added '10.128.0.31' (ED25519) to the list of known hosts. execve("./syz-executor4135343588", ["./syz-executor4135343588"], 0x7ffdf6462890 /* 10 vars */) = 0 brk(NULL) = 0x55556a251000 brk(0x55556a251d00) = 0x55556a251d00 arch_prctl(ARCH_SET_FS, 0x55556a251380) = 0 set_tid_address(0x55556a251650) = 296 set_robust_list(0x55556a251660, 24) = 0 rseq(0x55556a251ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4135343588", 4096) = 28 getrandom("\x08\xef\xa9\xce\xea\xa2\xf1\x5e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556a251d00 brk(0x55556a272d00) = 0x55556a272d00 brk(0x55556a273000) = 0x55556a273000 mprotect(0x7fd35647e000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556a251650) = 297 ./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x55556a251660, 24) = 0 [pid 297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 297] getppid() = 0 [pid 297] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 297] unshare(CLONE_NEWNS) = 0 [pid 297] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 297] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 297] unshare(CLONE_NEWCGROUP) = 0 [pid 297] unshare(CLONE_NEWUTS) = 0 [pid 297] unshare(CLONE_SYSVSEM) = 0 [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] getpid() = 1 [pid 297] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 48 c7 45 d0 fb ff ff ff eb d7 e8 bd bd 40 ff e8 f8 a2 96 ff [ 24.590081][ T297] RSP: 0018:ffffc9000126fd88 EFLAGS: 00010293 [ 24.595778][ T36] audit: type=1400 audit(1750674272.209:72): avc: denied { unmount } for pid=297 comm="syz-executor413" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 24.622226][ T297] [ 24.622236][ T297] RAX: ffffffff8244dd92 RBX: ffff88810c298700 RCX: ffff888101f4df00 [ 24.642582][ T36] audit: type=1400 audit(1750674272.209:73): avc: denied { mounton } for pid=297 comm="syz-executor413" path="/dev/gadgetfs" dev="devtmpfs" ino=434 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1 [ 24.648395][ T297] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000012 [ 24.711345][ T297] RBP: ffffc9000126fdc8 R08: ffff888103714307 R09: 1ffff110206e2860 [ 24.719737][ T297] R10: dffffc0000000000 R11: ffffed10206e2861 R12: ffffffffffffffff [ 24.728043][ T297] R13: 0000000000000012 R14: ffff8881112034a8 R15: ffff88810c298c01 [ 24.736158][ T297] FS: 000055556a251380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 24.745137][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.751968][ T297] CR2: 0000200000001000 CR3: 0000000103f64000 CR4: 00000000003526b0 [ 24.760026][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.768078][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.776115][ T297] Call Trace: [ 24.779412][ T297] [ 24.782631][ T297] ? __cfi_ovl_listxattr+0x10/0x10 [ 24.787946][ T297] listxattr+0x13a/0x360 [ 24.792255][ T297] path_listxattr+0xda/0x1c0 [ 24.796965][ T297] ? getxattr+0x1c0/0x1c0 [ 24.801532][ T297] ? __kasan_check_write+0x18/0x20 [ 24.806850][ T297] __x64_sys_llistxattr+0x81/0x90 [ 24.811968][ T297] x64_sys_call+0x2cb0/0x2ee0 [ 24.816761][ T297] do_syscall_64+0x58/0xf0 [ 24.821229][ T297] ? clear_bhb_loop+0x50/0xa0 [ 24.826103][ T297] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 24.832193][ T297] RIP: 0033:0x7fd35640aa39 [pid 297] llistxattr("./file0", 0x200000000200, 136) = -1 EIO (Input/output error) [pid 297] exit_group(1) = ? [pid 297] +++ exited with 1 +++ [ 24.836635][ T297] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 [ 24.857083][ T297] RSP: 002b:00007ffd435930e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000c3 [ 24.866267][ T297] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fd35640aa39 [ 24.874861][ T297] RDX: 0000000000000088 RSI: 0000200000000200 RDI: 0000200000000000 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=297, si_uid=0, si_status=1, si_utime=0, si_stime=37} --- exit_group(0) = ? +++ exited with 0 +++ [ 24.883572][ T297] RBP: 00007fd35645411a R08: 00000000