./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2216400208 <...> Warning: Permanently added '10.128.0.15' (ED25519) to the list of known hosts. execve("./syz-executor2216400208", ["./syz-executor2216400208"], 0x7fff50df5e50 /* 10 vars */) = 0 brk(NULL) = 0x55558f5bb000 brk(0x55558f5bbe00) = 0x55558f5bbe00 arch_prctl(ARCH_SET_FS, 0x55558f5bb480) = 0 set_tid_address(0x55558f5bb750) = 296 set_robust_list(0x55558f5bb760, 24) = 0 rseq(0x55558f5bbda0, 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-executor2216400208", 4096) = 28 getrandom("\x7d\x28\x9b\xb6\x95\xd0\x8b\x04", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558f5bbe00 brk(0x55558f5dce00) = 0x55558f5dce00 brk(0x55558f5dd000) = 0x55558f5dd000 mprotect(0x7fbf8f340000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7fbf8f29bd80, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fbf8f2a3320}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7fbf8f29bd80, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fbf8f2a3320}, NULL, 8) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x55558f5bb760, 24) = 0 [pid 297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 296] <... clone resumed>, child_tidptr=0x55558f5bb750) = 297 [pid 297] <... prctl resumed>) = 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 31 c0 e9 b6 00 00 00 41 83 fd 0a 0f 87 aa 00 00 00 44 89 6c [ 26.133578][ T36] audit: type=1400 audit(1750306608.360:72): avc: denied { unmount } for pid=297 comm="syz-executor221" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 26.159408][ T297] RSP: 0018:ffffc9000126f680 EFLAGS: 00010246 [ 26.179137][ T36] audit: type=1400 audit(1750306608.380:73): avc: denied { mounton } for pid=297 comm="syz-executor221" path="/dev/gadgetfs" dev="devtmpfs" ino=434 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1 [ 26.198640][ T297] [ 26.198648][ T297] RAX: 0000000000000000 RBX: 1ffff9200024ded4 RCX: 0000000000000000 [ 26.237859][ T297] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000126f728 [ 26.245836][ T297] RBP: ffffc9000126f7a8 R08: ffffc9000126f727 R09: 0000000000000000 [ 26.253825][ T297] R10: ffffc9000126f710 R11: fffff5200024dee5 R12: ffffc9000126f6c0 [ 26.261850][ T297] R13: 0000000000000016 R14: dffffc0000000000 R15: 0000000000000000 [ 26.269853][ T297] FS: 000055558f5bb480(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 26.278882][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.285501][ T297] CR2: 0000200000006000 CR3: 0000000100680000 CR4: 00000000003526b0 [ 26.293482][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.301650][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.309623][ T297] Call Trace: [ 26.312912][ T297] [ 26.315855][ T297] ? __cfi___alloc_pages_noprof+0x10/0x10 [ 26.321580][ T297] ? __kasan_slab_alloc+0x73/0x90 [ 26.326598][ T297] ? hashtab_init+0xdb/0x1f0 [ 26.331184][ T297] ___kmalloc_large_node+0x9c/0x1d0 [ 26.336373][ T297] ? ebitmap_read+0x21d/0x990 [ 26.341051][ T297] ? hashtab_init+0xdb/0x1f0 [ 26.345633][ T297] __kmalloc_large_node_noprof+0x1e/0xe0 [ 26.351264][ T297] ? hashtab_init+0xdb/0x1f0 [ 26.355847][ T297] __kmalloc_noprof+0x26d/0x450 [ 26.360709][ T297] hashtab_init+0xdb/0x1f0 [ 26.365119][ T297] ? policydb_read+0x86f/0x28c0 [ 26.369996][ T297] symtab_init+0x44/0x70 [ 26.374243][ T297] policydb_read+0x8fe/0x28c0 [ 26.378914][ T297] ? kasan_save_alloc_info+0x40/0x50 [ 26.384230][ T297] ? __cfi_policydb_read+0x10/0x10 [ 26.389340][ T297] ? security_load_policy+0x128/0x12f0 [ 26.394809][ T297] security_load_policy+0x162/0x12f0 [ 26.400107][ T297] ? irqentry_exit+0x4a/0x60 [ 26.404680][ T297] ? exc_page_fault+0x66/0xc0 [ 26.409330][ T297] ? asm_exc_page_fault+0x2b/0x30 [ 26.414349][ T297] ? __cfi_security_load_policy+0x10/0x10 [ 26.420165][ T297] ? rep_movs_alternative+0x4a/0xa0 [ 26.425347][ T297] sel_write_load+0x298/0x5e0 [ 26.430024][ T297] ? __cfi_sel_write_load+0x10/0x10 [ 26.435233][ T297] ? bpf_lsm_file_permission+0xd/0x20 [ 26.440604][ T297] ? __cfi_sel_write_load+0x10/0x10 [ 26.445798][ T297] vfs_write+0x3c0/0xe80 [ 26.450039][ T297] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 26.455580][ T297] ? __cfi_vfs_write+0x10/0x10 [ 26.460371][ T297] ? __asan_memset+0x39/0x50 [ 26.464955][ T297] ? ptrace_stop+0x6c9/0x8c0 [ 26.469534][ T297] ? __kasan_check_read+0x15/0x20 [ 26.474768][ T297] ksys_write+0x141/0x250 [ 26.479115][ T297] ? __cfi_ksys_write+0x10/0x10 [ 26.484059][ T297] ? __kasan_check_write+0x18/0x20 [ 26.489198][ T297] __x64_sys_write+0x7f/0x90 [ 26.493825][ T297] x64_sys_call+0x271c/0x2ee0 [ 26.498516][ T297] do_syscall_64+0x58/0xf0 [ 26.502947][ T297] ? clear_bhb_loop+0x35/0x90 [ 26.507621][ T297] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 26.513540][ T297] RIP: 0033:0x7fbf8f2cd1b9 [ 26.517972][ 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 [ 26.537774][ T297] RSP: 002b:00007fff7eea0508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 26.546233][ T297] RAX: ffffffffffffffda RBX: 00007fbf8f31615d RCX: 00007fbf8f2cd1b9 [ 26.554221][ T297] RDX: 000000000000606c RSI: 0000200000000000 RDI: 0000000000000003 [ 26.562330][ T297] RBP: 00007fbf8f31612d R08: 00007fbf8f31b19c R09: 00007fbf8f31b19c [ 26.570340][ T297] R10: 00007fbf8f31b19c R11: 0000000000000246 R12: 00007fbf8f31b19c [pid 297] write(3, 0x200000000000, 24684) = -1 ENOMEM (Cannot allocate memory) [pid 297] exit_group(1) = ? [pid 297] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=297, si_uid=0, si_status=1, si_utime=0, si_stime=55} --- exit_group(0) = ? +++ exited with 0 +++ [ 26.578318][ T297]