./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3756730860 <...> Warning: Permanently added '10.128.0.40' (ED25519) to the list of known hosts. execve("./syz-executor3756730860", ["./syz-executor3756730860"], 0x7ffcf725bc40 /* 10 vars */) = 0 brk(NULL) = 0x555555dc5000 brk(0x555555dc5d40) = 0x555555dc5d40 arch_prctl(ARCH_SET_FS, 0x555555dc53c0) = 0 set_tid_address(0x555555dc5690) = 286 set_robust_list(0x555555dc56a0, 24) = 0 rseq(0x555555dc5ce0, 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-executor3756730860", 4096) = 28 getrandom("\xa1\x65\xee\x13\x69\x94\x03\xd4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555dc5d40 brk(0x555555de6d40) = 0x555555de6d40 brk(0x555555de7000) = 0x555555de7000 mprotect(0x7fa39402f000, 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(0x7fa3940353ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fa393fcc520, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa393fbdba0}, 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) = 0x7fa393f48000 mprotect(0x7fa393f49000, 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=0x7fa393f68990, parent_tid=0x7fa393f68990, exit_signal=0, stack=0x7fa393f48000, stack_size=0x20300, tls=0x7fa393f686c0}./strace-static-x86_64: Process 287 attached [pid 287] set_robust_list(0x7fa393f689a0, 24) = 0 [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] futex(0x7fa3940353e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... clone3 resumed> => {parent_tid=[287]}, 88) = 287 [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 286] futex(0x7fa3940353e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] <... futex resumed>) = 0 [pid 287] mkdirat(AT_FDCWD, "./file0", 000 [pid 286] futex(0x7fa3940353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... mkdirat resumed>) = 0 [pid 287] futex(0x7fa3940353ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 287] <... futex resumed>) = 1 [pid 286] futex(0x7fa3940353e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fa3940353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 287] futex(0x7fa3940353ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] futex(0x7fa3940353e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fa3940353e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7fa3940353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 0 [pid 287] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 287] futex(0x7fa3940353ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 287] <... futex resumed>) = 1 [pid 286] futex(0x7fa3940353e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] read(3, [pid 286] <... futex resumed>) = 0 [pid 287] <... read resumed>"\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", 8192) = 56 [pid 286] futex(0x7fa3940353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x26\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 287] futex(0x7fa3940353ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 287] <... futex resumed>) = 1 [pid 286] futex(0x7fa3940353e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] read(3, [pid 286] <... futex resumed>) = 0 [ 20.261120][ T24] audit: type=1400 audit(1719813767.500:66): avc: denied { execmem } for pid=286 comm="syz-executor375" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.271199][ T24] audit: type=1400 audit(1719813767.510:67): avc: denied { read write } for pid=286 comm="syz-executor375" 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 [ 20.274313][ T24] audit: type=1400 audit(1719813767.510:68): avc: denied { open } for pid=286 comm="syz-executor375" 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 [ 20.279599][ T24] audit: type=1400 audit(1719813767.520:69): avc: denied { mounton } for pid=286 comm="syz-executor375" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 286] futex(0x7fa3940353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fa3940353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fa3940353fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fa393f27000 [pid 286] mprotect(0x7fa393f28000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fa393f47990, parent_tid=0x7fa393f47990, exit_signal=0, stack=0x7fa393f27000, stack_size=0x20300, tls=0x7fa393f476c0}./strace-static-x86_64: Process 289 attached [pid 289] set_robust_list(0x7fa393f479a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7fa3940353f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... clone3 resumed> => {parent_tid=[289]}, 88) = 289 [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 286] futex(0x7fa3940353f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7fa3940353fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 0 [pid 289] openat(AT_FDCWD, "./file0", O_RDONLY [pid 287] <... read resumed>"\x30\x00\x00\x00\x1b\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\x21\x01\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 287] write(3, "\x20\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", 32) = 32 [pid 287] futex(0x7fa3940353ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fa3940353e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... openat resumed>) = 4 [pid 289] futex(0x7fa3940353fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fa3940353e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] <... futex resumed>) = 0 [pid 286] futex(0x7fa3940353ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] renameat2(4, "./file1", 4, "./file0", RENAME_NOREPLACE|RENAME_WHITEOUT [pid 289] <... futex resumed>) = 1 [ 20.294152][ T24] audit: type=1400 audit(1719813767.520:70): avc: denied { mount } for pid=286 comm="syz-executor375" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 289] futex(0x7fa3940353f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fa3940353f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7fa3940353fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 0 [pid 289] read(3, "\x2e\x00\x00\x00\x01\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1f\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x31\x00", 8224) = 46 [pid 289] futex(0x7fa3940353fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fa3940353f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fa3940353fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] write(3, "\xa0\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\xfc\xff\xff\xff\xff\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\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"..., 160) = 160 [pid 289] futex(0x7fa3940353fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [ 20.390182][ T287] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 20.401839][ T287] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 20.410169][ T287] CPU: 1 PID: 287 Comm: syz-executor375 Not tainted 5.10.216-syzkaller-00510-ga4a2b7a82ee4 #0 [ 20.420461][ T287] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 20.430349][ T287] RIP: 0010:do_renameat2+0x790/0x1240 [ 20.435533][ T287] Code: ff ff 48 89 c3 48 3d 01 f0 ff ff 72 16 e8 58 5a 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 [ 20.454985][ T287] RSP: 0018:ffffc90000b17ce0 EFLAGS: 00010202 [ 20.460908][ T287] RAX: 0000000000000010 RBX: 0000000000000010 RCX: ffff88811ef662c0 [ 20.468690][ T287] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 20.476500][ T287] RBP: ffffc90000b17ef0 R08: ffffffff81b68098 R09: ffffed102389e4fa [pid 289] futex(0x7fa3940353f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] exit_group(0) = ? [pid 289] <... futex resumed>) = ? [pid 289] +++ exited with 0 +++ [ 20.484312][ T287] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002 [ 20.492307][ T287] R13: 0000000000000000 R14: ffffc90000b17e01 R15: dffffc0000000000 [ 20.500110][ T287] FS: 00007fa393f686c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.509051][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.515467][ T287] CR2: 0000000020003000 CR3: 0000000117c67000 CR4: 00000000003506a0 [ 20.523285][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.531187][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.538999][ T287] Call Trace: [ 20.542121][ T287] ? __die_body+0x62/0xb0 [ 20.546279][ T287] ? die_addr+0x9f/0xd0 [ 20.550275][ T287] ? exc_general_protection+0x3ff/0x490 [ 20.555660][ T287] ? asm_exc_general_protection+0x1e/0x30 [ 20.561473][ T287] ? fast_dput+0x78/0x2a0 [ 20.565637][ T287] ? do_renameat2+0x790/0x1240 [ 20.570251][ T287] ? fsnotify_move+0x290/0x290 [ 20.574843][ T287] __x64_sys_renameat2+0xdd/0xf0 [ 20.579613][ T287] do_syscall_64+0x34/0x70 [ 20.583865][ T287] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 20.589807][ T287] RIP: 0033:0x7fa393fa6679 [ 20.594119][ T287] 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 [ 20.613747][ T287] RSP: 002b:00007fa393f68218 EFLAGS: 00000246 ORIG_RAX: 000000000000013c [ 20.622074][ T287] RAX: ffffffffffffffda RBX: 00007fa3940353e8 RCX: 00007fa393fa6679 [ 20.629979][ T287] RDX: 0000000000000004 RSI: 0000000020000500 RDI: 0000000000000004 [ 20.637783][ T287] RBP: 00007fa3940353e0 R08: 0000000000000005 R09: 0000000000000000 [ 20.645595][ T287] R10: 00000000200001c0 R11: 0000000000000246 R12: 00007fa39400209c [ 20.653497][ T287] R13: 0030656c69662f2e R14: 00007fa3940020ca R15: 0000002000000000 [ 20.661305][ T287] Modules linked in: [ 20.665270][ T287] ---[ end trace 7b5e8843b6c9a4a0 ]--- [ 20.670578][ T287] RIP: 0010:do_renameat2+0x790/0x1240 [ 20.675748][ T287] Code: ff ff 48 89 c3 48 3d 01 f0 ff ff 72 16 e8 58 5a 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 [ 20.695380][ T287] RSP: 0018:ffffc90000b17ce0 EFLAGS: 00010202 [ 20.701275][ T287] RAX: 0000000000000010 RBX: 0000000000000010 RCX: ffff88811ef662c0 [ 20.709190][ T287] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 20.716967][ T287] RBP: ffffc90000b17ef0 R08: ffffffff81b68098 R09: ffffed102389e4fa [ 20.724813][ T287] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002 [ 20.732607][ T287] R13: 0000000000000000 R14: ffffc90000b17e01 R15: dffffc0000000000 [ 20.740441][ T287] FS: 00007fa393f686c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.749193][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.755668][ T287] CR2: 0000000020003000 CR3: 0000000117c67000 CR4: 00000000003506a0 [ 20.763522][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.771312][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.779131][ T287] Kernel panic - not syncing: Fatal exception [ 20.785267][ T287] Kernel Offset: disabled [ 20.789404][ T287] Rebooting in 86400 seconds..