./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1924407900 <...> Warning: Permanently added '10.128.1.37' (ED25519) to the list of known hosts. execve("./syz-executor1924407900", ["./syz-executor1924407900"], 0x7ffd3d5ceda0 /* 10 vars */) = 0 brk(NULL) = 0x55558a1f3000 brk(0x55558a1f3d40) = 0x55558a1f3d40 arch_prctl(ARCH_SET_FS, 0x55558a1f33c0) = 0 set_tid_address(0x55558a1f3690) = 288 set_robust_list(0x55558a1f36a0, 24) = 0 rseq(0x55558a1f3ce0, 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-executor1924407900", 4096) = 28 getrandom("\x0a\x6c\x56\xf1\xe6\x22\x2f\x82", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558a1f3d40 brk(0x55558a214d40) = 0x55558a214d40 brk(0x55558a215000) = 0x55558a215000 mprotect(0x7f423e0e0000, 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 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f423e0e63ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f423e07f360, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f423e0709e0}, 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) = 0x7f423dffb000 mprotect(0x7f423dffc000, 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=0x7f423e01b990, parent_tid=0x7f423e01b990, exit_signal=0, stack=0x7f423dffb000, stack_size=0x20300, tls=0x7f423e01b6c0}./strace-static-x86_64: Process 289 attached => {parent_tid=[289]}, 88) = 289 [pid 289] set_robust_list(0x7f423e01b9a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f423e0e63e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7f423e0e63e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] <... futex resumed>) = 0 [pid 289] mkdirat(AT_FDCWD, "./file0", 000 [pid 288] futex(0x7f423e0e63ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... mkdirat resumed>) = 0 [pid 289] futex(0x7f423e0e63ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f423e0e63e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f423e0e63ec, 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(0x7f423e0e63ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f423e0e63e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"... [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f423e0e63ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... mount resumed>) = 0 [pid 289] futex(0x7f423e0e63ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [pid 288] futex(0x7f423e0e63e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f423e0e63ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] read(3, "\x38\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\x20\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x83", 8224) = 56 [pid 289] futex(0x7f423e0e63ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [pid 288] futex(0x7f423e0e63e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f423e0e63ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] read(3, [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7f423e0e63ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7f423e0e63fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f423dfda000 [pid 288] mprotect(0x7f423dfdb000, 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=0x7f423dffa990, parent_tid=0x7f423dffa990, exit_signal=0, stack=0x7f423dfda000, stack_size=0x20300, tls=0x7f423dffa6c0} => {parent_tid=[291]}, 88) = 291 ./strace-static-x86_64: Process 291 attached [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7f423e0e63f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f423e0e63fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] set_robust_list(0x7f423dffa9a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x28\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 80) = 80 [pid 291] futex(0x7f423e0e63fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f423e0e63f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f423e0e63fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] unlink("./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, "\x96\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\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"..., 150) = 150 [pid 289] futex(0x7f423e0e63ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 21.187764][ T24] audit: type=1400 audit(1728802540.610:66): 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 [ 21.197641][ T24] audit: type=1400 audit(1728802540.620:67): avc: denied { read write } for pid=288 comm="syz-executor192" name="fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 21.200700][ T24] audit: type=1400 audit(1728802540.620:68): avc: denied { open } for pid=288 comm="syz-executor192" path="/dev/fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 21.204863][ T24] audit: type=1400 audit(1728802540.620:69): avc: denied { mounton } for pid=288 comm="syz-executor192" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.208379][ T24] audit: type=1400 audit(1728802540.620:70): 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 [ 21.263721][ T291] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 21.275240][ T291] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 21.283485][ T291] CPU: 0 PID: 291 Comm: syz-executor192 Not tainted 5.10.226-syzkaller-00709-ge5e5644ea27f #0 [ 21.293547][ T291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 21.303461][ T291] RIP: 0010:do_unlinkat+0x3b2/0x8b0 [ 21.308482][ T291] Code: de e8 02 8a b6 ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 bf ec ff ff ff 41 29 c7 e9 99 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 02 20 f4 ff 49 8b 45 30 48 89 44 24 28 4c [ 21.327920][ T291] RSP: 0018:ffffc90000b37da0 EFLAGS: 00010207 [ 21.333821][ T291] RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffff8881211d3b40 [ 21.341634][ T291] RDX: ffff8881211d3b40 RSI: 0000000000000000 RDI: 0000000000000036 [ 21.349443][ T291] RBP: ffffc90000b37f18 R08: ffffffff81b42643 R09: ffffed102395a82e [ 21.357256][ T291] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 21.365239][ T291] R13: 0000000000000006 R14: 1ffff1102395a828 R15: dffffc0000000000 [ 21.373054][ T291] FS: 00007f423dffa6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.381948][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.388366][ T291] CR2: 00007f423dffad58 CR3: 0000000119959000 CR4: 00000000003506b0 [ 21.396176][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.403984][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.411792][ T291] Call Trace: [ 21.414928][ T291] ? __die_body+0x62/0xb0 [ 21.419087][ T291] ? die_addr+0x9f/0xd0 [ 21.423081][ T291] ? exc_general_protection+0x3ff/0x490 [ 21.428470][ T291] ? asm_exc_general_protection+0x1e/0x30 [ 21.434016][ T291] ? do_unlinkat+0x333/0x8b0 [ 21.438442][ T291] ? do_unlinkat+0x3b2/0x8b0 [ 21.442869][ T291] ? fsnotify_link_count+0x90/0x90 [ 21.447818][ T291] ? strncpy_from_user+0x18e/0x2d0 [ 21.452761][ T291] ? getname_flags+0x1fd/0x520 [ 21.457455][ T291] __x64_sys_unlink+0x49/0x50 [ 21.461968][ T291] do_syscall_64+0x34/0x70 [ 21.466278][ T291] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.471947][ T291] RIP: 0033:0x7f423e0594b9 [ 21.476207][ 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 [ 21.495641][ T291] RSP: 002b:00007f423dffa218 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 21.503886][ T291] RAX: ffffffffffffffda RBX: 00007f423e0e63f8 RCX: 00007f423e0594b9 [pid 289] futex(0x7f423e0e63e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 21.511696][ T291] RDX: 00007f423e0594b9 RSI: 00000000000f4240 RDI: 0000000020000100 [ 21.519512][ T291] RBP: 00007f423e0e63f0 R08: 0000000000000000 R09: 0000000000000000 [ 21.527339][ T291] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f423e0b3034 [ 21.535141][ T291] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 21.542944][ T291] Modules linked in: [ 21.547703][ T291] ---[ end trace b6a8eb8feee9ceeb ]--- [ 21.552995][ T291] RIP: 0010:do_unlinkat+0x3b2/0x8b0 [ 21.558023][ T291] Code: de e8 02 8a b6 ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 bf ec ff ff ff 41 29 c7 e9 99 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 02 20 f4 ff 49 8b 45 30 48 89 44 24 28 4c [ 21.577463][ T291] RSP: 0018:ffffc90000b37da0 EFLAGS: 00010207 [ 21.583341][ T291] RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffff8881211d3b40 [ 21.591188][ T291] RDX: ffff8881211d3b40 RSI: 0000000000000000 RDI: 0000000000000036 [ 21.598984][ T291] RBP: ffffc90000b37f18 R08: ffffffff81b42643 R09: ffffed102395a82e [ 21.606794][ T291] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [pid 288] exit_group(0) = ? [pid 289] <... futex resumed>) = ? [pid 289] +++ exited with 0 +++ [ 21.614580][ T291] R13: 0000000000000006 R14: 1ffff1102395a828 R15: dffffc0000000000 [ 21.622441][ T291] FS: 00007f423dffa6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.631174][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.637603][ T291] CR2: 00007f423dffad58 CR3: 0000000119959000 CR4: 00000000003506b0 [ 21.645395][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.653229][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.661034][ T291] Kernel panic - not syncing: Fatal exception [ 21.667123][ T291] Kernel Offset: disabled [ 21.671241][ T291] Rebooting in 86400 seconds..