./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1629631400 <...> Warning: Permanently added '10.128.1.112' (ED25519) to the list of known hosts. execve("./syz-executor1629631400", ["./syz-executor1629631400"], 0x7ffdeab66f30 /* 10 vars */) = 0 brk(NULL) = 0x55558396f000 brk(0x55558396fd40) = 0x55558396fd40 arch_prctl(ARCH_SET_FS, 0x55558396f3c0) = 0 set_tid_address(0x55558396f690) = 289 set_robust_list(0x55558396f6a0, 24) = 0 rseq(0x55558396fce0, 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-executor1629631400", 4096) = 28 getrandom("\x84\x57\x22\x98\x79\x66\x40\x35", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558396fd40 brk(0x555583990d40) = 0x555583990d40 brk(0x555583991000) = 0x555583991000 mprotect(0x7f25d96e2000, 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(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f25d9681420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f25d9672aa0}, 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) = 0x7f25d95fd000 mprotect(0x7f25d95fe000, 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=0x7f25d961d990, parent_tid=0x7f25d961d990, exit_signal=0, stack=0x7f25d95fd000, stack_size=0x20300, tls=0x7f25d961d6c0} => {parent_tid=[290]}, 88) = 290 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f25d96e8408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f25d96e840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f25d961d9a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] seccomp(SECCOMP_SET_MODE_FILTER, 0, {len=1, filter=0x200000000380}) = 0 [pid 290] futex(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 290] <... futex resumed>) = 1 [pid 289] futex(0x7f25d96e8408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f25d96e840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] mkdir("./file0", 000) = 0 [pid 290] futex(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 290] <... futex resumed>) = 1 [pid 289] futex(0x7f25d96e8408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f25d96e840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 290] futex(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] futex(0x7f25d96e8408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f25d96e8408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] futex(0x7f25d96e840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 0 [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=0x0000000000000000,group_id=0000000000"...) = 0 [pid 290] futex(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f25d96e8408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f25d96e840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] 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 290] futex(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f25d96e8408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f25d96e840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x2b\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 290] futex(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f25d96e8408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f25d96e840c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [ 23.901069][ T24] audit: type=1400 audit(1744128555.280:66): avc: denied { execmem } for pid=289 comm="syz-executor162" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.923621][ T24] audit: type=1400 audit(1744128555.300:67): avc: denied { read write } for pid=289 comm="syz-executor162" 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 [pid 290] read(3, [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f25d96e841c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f25d95dc000 [pid 289] mprotect(0x7f25d95dd000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f25d95fc990, parent_tid=0x7f25d95fc990, exit_signal=0, stack=0x7f25d95dc000, stack_size=0x20300, tls=0x7f25d95fc6c0} => {parent_tid=[292]}, 88) = 292 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f25d96e8418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f25d96e841c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 292 attached [pid 292] set_robust_list(0x7f25d95fc9a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 290] <... 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\x24\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8231) = 46 [pid 290] write(3, "\xab\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\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\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\x09\x00\x00\x00\x00\x00\x00\x00\x0d\x00\x00\x00"..., 171) = 171 [pid 290] futex(0x7f25d96e840c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.947078][ T24] audit: type=1400 audit(1744128555.300:68): avc: denied { open } for pid=289 comm="syz-executor162" 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 [ 23.970329][ T24] audit: type=1400 audit(1744128555.320:69): avc: denied { mounton } for pid=289 comm="syz-executor162" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.993015][ T24] audit: type=1400 audit(1744128555.320:70): avc: denied { mount } for pid=289 comm="syz-executor162" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.997856][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 24.026317][ T292] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 24.034567][ T292] CPU: 1 PID: 292 Comm: syz-executor162 Not tainted 5.10.234-syzkaller-00152-g2afb6720c0dc #0 [ 24.044651][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 24.054561][ T292] RIP: 0010:do_renameat2+0x790/0x1240 [ 24.059737][ T292] Code: ff ff 48 89 c3 48 3d 01 f0 ff ff 72 16 e8 48 4b b6 ff 41 89 dc 48 8b 1c 24 4c 8b 6c 24 58 e9 60 03 00 00 49 89 dc 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 4c 8b 6c 24 58 0f 85 18 06 00 00 48 89 5c 24 [ 24.079180][ T292] RSP: 0018:ffffc90000b37d00 EFLAGS: 00010206 [ 24.085072][ T292] RAX: 000000000000001b RBX: 000000000000001b RCX: ffff88810d0abb40 [ 24.092881][ T292] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 24.100698][ T292] RBP: ffffc90000b37f08 R08: ffffffff81b6a388 R09: ffffed102126c294 [ 24.108506][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003 [ 24.116326][ T292] R13: 0000000000000000 R14: ffffc90000b37e01 R15: dffffc0000000000 [ 24.124140][ T292] FS: 00007f25d95fc6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.132898][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.139323][ T292] CR2: 00007f25d95fcd58 CR3: 000000011ccdd000 CR4: 00000000003506a0 [ 24.147136][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.154942][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.162754][ T292] Call Trace: [ 24.165973][ T292] ? __die_body+0x62/0xb0 [ 24.170133][ T292] ? die_addr+0x9f/0xd0 [ 24.174128][ T292] ? exc_general_protection+0x3ff/0x490 [ 24.179602][ T292] ? asm_exc_general_protection+0x1e/0x30 [ 24.185151][ T292] ? fast_dput+0x78/0x2a0 [ 24.189324][ T292] ? do_renameat2+0x790/0x1240 [ 24.194007][ T292] ? fsnotify_move+0x290/0x290 [ 24.198608][ T292] ? getname_flags+0x1fd/0x520 [ 24.203207][ T292] __x64_sys_rename+0x86/0x90 [ 24.207718][ T292] do_syscall_64+0x34/0x70 [ 24.211971][ T292] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.217698][ T292] RIP: 0033:0x7f25d965b579 [ 24.221953][ T292] 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 [ 24.241390][ T292] RSP: 002b:00007f25d95fc218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [pid 290] futex(0x7f25d96e8408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 24.249637][ T292] RAX: ffffffffffffffda RBX: 00007f25d96e8418 RCX: 00007f25d965b579 [ 24.257453][ T292] RDX: 00007f25d9638cf6 RSI: 0000200000000140 RDI: 0000200000000100 [ 24.265259][ T292] RBP: 00007f25d96e8410 R08: 00007ffdfe535d37 R09: 0000000000000000 [ 24.273076][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f25d96b5034 [ 24.280982][ T292] R13: 00002000000021c0 R14: 0000200000000100 R15: 00007ffdfe535d38 [ 24.288794][ T292] Modules linked in: [ 24.293482][ T292] ---[ end trace 25fbcb5b38f49bf1 ]--- [ 24.298923][ T292] RIP: 0010:do_renameat2+0x790/0x1240 [ 24.304102][ T292] Code: ff ff 48 89 c3 48 3d 01 f0 ff ff 72 16 e8 48 4b b6 ff 41 89 dc 48 8b 1c 24 4c 8b 6c 24 58 e9 60 03 00 00 49 89 dc 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 4c 8b 6c 24 58 0f 85 18 06 00 00 48 89 5c 24 [ 24.323612][ T292] RSP: 0018:ffffc90000b37d00 EFLAGS: 00010206 [ 24.329488][ T292] RAX: 000000000000001b RBX: 000000000000001b RCX: ffff88810d0abb40 [ 24.337291][ T292] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 24.345089][ T292] RBP: ffffc90000b37f08 R08: ffffffff81b6a388 R09: ffffed102126c294 [ 24.352877][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003 [ 24.360732][ T292] R13: 0000000000000000 R14: ffffc90000b37e01 R15: dffffc0000000000 [ 24.368521][ T292] FS: 00007f25d95fc6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.377355][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.383692][ T292] CR2: 00007f25d95fcd58 CR3: 000000011ccdd000 CR4: 00000000003506a0 [ 24.391551][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.399334][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.407160][ T292] Kernel panic - not syncing: Fatal exception [ 24.413273][ T292] Kernel Offset: disabled [ 24.417418][ T292] Rebooting in 86400 seconds..