./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1922333345 <...> ss permissive=1 [ 18.259982][ T30] audit: type=1400 audit(1754176919.779:63): avc: denied { siginh } for pid=237 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.212' (ED25519) to the list of known hosts. execve("./syz-executor1922333345", ["./syz-executor1922333345"], 0x7ffe92a27360 /* 10 vars */) = 0 brk(NULL) = 0x555570bb1000 brk(0x555570bb1d40) = 0x555570bb1d40 arch_prctl(ARCH_SET_FS, 0x555570bb13c0) = 0 set_tid_address(0x555570bb1690) = 288 set_robust_list(0x555570bb16a0, 24) = 0 rseq(0x555570bb1ce0, 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-executor1922333345", 4096) = 28 getrandom("\x0a\xbb\x8d\x78\x22\x07\x76\x3c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555570bb1d40 brk(0x555570bd2d40) = 0x555570bd2d40 brk(0x555570bd3000) = 0x555570bd3000 mprotect(0x7f57785fe000, 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 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f57786043ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f577859d3a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f577858ea20}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5778519000 mprotect(0x7f577851a000, 131072, PROT_READ|PROT_WRITE) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5778539990, parent_tid=0x7f5778539990, exit_signal=0, stack=0x7f5778519000, stack_size=0x20300, tls=0x7f57785396c0}./strace-static-x86_64: Process 289 attached => {parent_tid=[289]}, 88) = 289 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7f57786043e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f57786043ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] set_robust_list(0x7f57785399a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] mkdir("./file0", 000) = 0 [pid 289] futex(0x7f57786043ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [pid 288] futex(0x7f57786043e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f57786043ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 289] futex(0x7f57786043ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] futex(0x7f57786043e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f57786043e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] <... futex resumed>) = 0 [pid 288] futex(0x7f57786043ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] mount(NULL, "./file0", "fuse", 0, "fd=00000000000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=000"...) = 0 [pid 289] futex(0x7f57786043ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f57786043e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f57786043ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] read(3, "\x68\x00\x00\x00\x1a\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x24\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x01\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 8224) = 104 [pid 289] futex(0x7f57786043ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f57786043e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f57786043ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x29\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfe\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 80) = 80 [pid 289] futex(0x7f57786043ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f57786043e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f57786043ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [ 27.610925][ T30] audit: type=1400 audit(1754176929.189:64): avc: denied { execmem } for pid=288 comm="syz-executor192" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 27.635194][ T30] audit: type=1400 audit(1754176929.209:65): avc: denied { read write } for pid=288 comm="syz-executor192" name="fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 289] read(3, [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7f57786043ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7f57786043fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f57784f8000 [pid 288] mprotect(0x7f57784f9000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5778518990, parent_tid=0x7f5778518990, exit_signal=0, stack=0x7f57784f8000, stack_size=0x20300, tls=0x7f57785186c0} => {parent_tid=[291]}, 88) = 291 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7f57786043f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f57786043fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7f57785189a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] rmdir("./file0/../file0/file0" [pid 289] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x23\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 289] write(3, "\xa5\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 165) = 165 [pid 289] futex(0x7f57786043ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 27.658796][ T30] audit: type=1400 audit(1754176929.209:66): avc: denied { open } for pid=288 comm="syz-executor192" path="/dev/fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 27.682337][ T30] audit: type=1400 audit(1754176929.219:67): avc: denied { mounton } for pid=288 comm="syz-executor192" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 27.705179][ T30] audit: type=1400 audit(1754176929.219:68): avc: denied { mount } for pid=288 comm="syz-executor192" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 27.709214][ T291] general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN [ 27.738975][ T291] KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] [ 27.747398][ T291] CPU: 0 PID: 291 Comm: syz-executor192 Not tainted 5.15.189-syzkaller-00091-gf32b52534f1d #0 [ 27.757631][ T291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 27.767694][ T291] RIP: 0010:do_rmdir+0x1f2/0x6a0 [ 27.772652][ T291] Code: ff ff 49 89 c6 48 3d 01 f0 ff ff 72 0d e8 76 d3 b6 ff 45 89 f7 e9 94 00 00 00 4c 89 74 24 20 4d 8d 7e 30 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 2f 4e f5 ff 49 83 3f 00 4c 8b 34 [ 27.792341][ T291] RSP: 0018:ffffc90000a07e20 EFLAGS: 00010203 [ 27.798420][ T291] RAX: 0000000000000008 RBX: 1ffff92000140fcc RCX: ffff8881069862c0 [ 27.806392][ T291] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881069862c0 [ 27.814375][ T291] RBP: ffffc90000a07ee8 R08: dffffc0000000000 R09: ffffed1024034b82 [ 27.822353][ T291] R10: ffffed1024034b82 R11: 1ffff11024034b81 R12: 00000000ffffff9c [ 27.830414][ T291] R13: dffffc0000000000 R14: 0000000000000015 R15: 0000000000000045 [ 27.838406][ T291] FS: 00007f57785186c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 27.847338][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.854007][ T291] CR2: 00007f5778518d58 CR3: 0000000122182000 CR4: 00000000003506b0 [ 27.861999][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.869965][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.877938][ T291] Call Trace: [ 27.881210][ T291] [ 27.884141][ T291] ? d_delete_notify+0x160/0x160 [ 27.889076][ T291] ? getname_flags+0x206/0x500 [ 27.893837][ T291] __x64_sys_rmdir+0x49/0x50 [ 27.898423][ T291] x64_sys_call+0x25f/0x9a0 [ 27.902919][ T291] do_syscall_64+0x4c/0xa0 [ 27.907334][ T291] ? clear_bhb_loop+0x50/0xa0 [ 27.912004][ T291] ? clear_bhb_loop+0x50/0xa0 [ 27.916675][ T291] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 27.922581][ T291] RIP: 0033:0x7f57785774f9 [ 27.927007][ T291] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 [ 27.946617][ T291] RSP: 002b:00007f5778518218 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [pid 289] futex(0x7f57786043e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 27.955043][ T291] RAX: ffffffffffffffda RBX: 00007f57786043f8 RCX: 00007f57785774f9 [ 27.963053][ T291] RDX: 00007f5778554c86 RSI: 0000000000000000 RDI: 0000200000000200 [ 27.971024][ T291] RBP: 00007f57786043f0 R08: 00007ffc616d45f7 R09: 0000000000000000 [ 27.979002][ T291] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f57785d102c [ 27.986970][ T291] R13: 000020000000c280 R14: 0000200000000200 R15: 00007ffc616d45f8 [ 27.994948][ T291] [ 27.997970][ T291] Modules linked in: [ 28.002739][ T291] ---[ end trace c4f8a03524c30e64 ]--- [ 28.008452][ T291] RIP: 0010:do_rmdir+0x1f2/0x6a0 [ 28.009426][ T30] audit: type=1400 audit(1754176929.579:69): avc: denied { read } for pid=83 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 [ 28.013652][ T291] Code: ff ff 49 89 c6 48 3d 01 f0 ff ff 72 0d e8 76 d3 b6 ff 45 89 f7 e9 94 00 00 00 4c 89 74 24 20 4d 8d 7e 30 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 2f 4e f5 ff 49 83 3f 00 4c 8b 34 [ 28.035301][ T30] audit: type=1400 audit(1754176929.579:70): avc: denied { search } for pid=83 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 [ 28.054865][ T291] RSP: 0018:ffffc90000a07e20 EFLAGS: 00010203 [ 28.076341][ T30] audit: type=1400 audit(1754176929.579:71): avc: denied { write } for pid=83 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 [ 28.082425][ T291] RAX: 0000000000000008 RBX: 1ffff92000140fcc RCX: ffff8881069862c0 [ 28.103787][ T30] audit: type=1400 audit(1754176929.579:72): avc: denied { add_name } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 28.111603][ T291] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881069862c0 [ 28.132109][ T30] audit: type=1400 audit(1754176929.579:73): avc: denied { create } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 28.140021][ T291] RBP: ffffc90000a07ee8 R08: dffffc0000000000 R09: ffffed1024034b82 [ 28.168236][ T291] R10: ffffed1024034b82 R11: 1ffff11024034b81 R12: 00000000ffffff9c [ 28.176236][ T291] R13: dffffc0000000000 R14: 0000000000000015 R15: 0000000000000045 [ 28.184236][ T291] FS: 00007f57785186c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 28.193196][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.199813][ T291] CR2: 00007f5778518d58 CR3: 0000000122182000 CR4: 00000000003506b0 [ 28.207794][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.215973][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.224114][ T291] Kernel panic - not syncing: Fatal exception [ 28.230444][ T291] Kernel Offset: disabled [ 28.234773][ T291] Rebooting in 86400 seconds..