./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1407296863 <...> Warning: Permanently added '10.128.0.70' (ED25519) to the list of known hosts. execve("./syz-executor1407296863", ["./syz-executor1407296863"], 0x7ffcca6f6120 /* 10 vars */) = 0 brk(NULL) = 0x555556f98000 brk(0x555556f98d40) = 0x555556f98d40 arch_prctl(ARCH_SET_FS, 0x555556f983c0) = 0 set_tid_address(0x555556f98690) = 287 set_robust_list(0x555556f986a0, 24) = 0 rseq(0x555556f98ce0, 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-executor1407296863", 4096) = 28 getrandom("\xed\xc1\xf1\x41\xd1\xde\x05\xb7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556f98d40 brk(0x555556fb9d40) = 0x555556fb9d40 brk(0x555556fba000) = 0x555556fba000 mprotect(0x7fb4331dd000, 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 futex(0x7fb4331e340c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fb433180160, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fb4331717e0}, 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) = 0x7fb4330fc000 mprotect(0x7fb4330fd000, 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=0x7fb43311c990, parent_tid=0x7fb43311c990, exit_signal=0, stack=0x7fb4330fc000, stack_size=0x20300, tls=0x7fb43311c6c0} => {parent_tid=[288]}, 88) = 288 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fb4331e3408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fb4331e340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 288 attached [pid 288] set_robust_list(0x7fb43311c9a0, 24) = 0 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] mkdir("./file0", 000) = 0 [pid 288] futex(0x7fb4331e340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 288] <... futex resumed>) = 1 [pid 287] futex(0x7fb4331e3408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fb4331e340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 288] futex(0x7fb4331e340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 288] <... futex resumed>) = 1 [pid 287] futex(0x7fb4331e3408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fb4331e340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 288] futex(0x7fb4331e340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7fb4331e3408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fb4331e340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] 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 288] futex(0x7fb4331e340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7fb4331e3408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fb4331e340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x27\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 288] futex(0x7fb4331e340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7fb4331e3408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fb4331e340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [ 21.731619][ T24] audit: type=1400 audit(1694759313.880:66): avc: denied { execmem } for pid=287 comm="syz-executor140" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.739536][ T24] audit: type=1400 audit(1694759313.890:67): avc: denied { read write } for pid=287 comm="syz-executor140" 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 [ 21.746774][ T24] audit: type=1400 audit(1694759313.890:68): avc: denied { open } for pid=287 comm="syz-executor140" 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 [ 21.751543][ T24] audit: type=1400 audit(1694759313.890:69): avc: denied { mounton } for pid=287 comm="syz-executor140" 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 288] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 287] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7fb4331e340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 287] futex(0x7fb4331e341c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fb4330db000 [pid 287] mprotect(0x7fb4330dc000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 287] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 287] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fb4330fb990, parent_tid=0x7fb4330fb990, exit_signal=0, stack=0x7fb4330db000, stack_size=0x20300, tls=0x7fb4330fb6c0} => {parent_tid=[291]}, 88) = 291 ./strace-static-x86_64: Process 291 attached [pid 287] rt_sigprocmask(SIG_SETMASK, [], [pid 291] set_robust_list(0x7fb4330fb9a0, 24 [pid 287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 287] futex(0x7fb4331e3418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fb4331e341c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... set_robust_list resumed>) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] read(3, "\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\x20\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8224) = 46 [pid 291] futex(0x7fb4331e341c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7fb4331e3418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fb4331e341c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] write(3, "\xa0\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x80\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x0a\x5a\x00\x00\x00\x00\x00\x00\xfa\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00"..., 160) = 160 [pid 291] futex(0x7fb4331e341c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 291] futex(0x7fb4331e3418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] <... futex resumed>) = 0 [ 21.773218][ T24] audit: type=1400 audit(1694759313.890:70): avc: denied { mount } for pid=287 comm="syz-executor140" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 21.798141][ T288] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 21.809838][ T288] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 21.818099][ T288] CPU: 0 PID: 288 Comm: syz-executor140 Not tainted 5.10.194-syzkaller-00508-ga27512601c2d #0 [ 21.828334][ T288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 21.838246][ T288] RIP: 0010:do_renameat2+0x5e6/0x1130 [ 21.843437][ T288] Code: 89 de 8b 54 24 3c e8 09 31 ff ff 49 89 c5 48 3d 01 f0 ff ff 72 0d e8 49 a0 b6 ff 44 89 eb e9 d7 03 00 00 4d 89 ec 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 0f 85 d6 05 00 00 41 8b 5d 00 be 00 00 70 00 [ 21.862959][ T288] RSP: 0018:ffffc9000094fd00 EFLAGS: 00010202 [ 21.868855][ T288] RAX: 0000000000000010 RBX: ffff88811c496110 RCX: ffff88811e4093c0 [pid 287] exit_group(0) = ? [pid 291] <... futex resumed>) = ? [pid 291] +++ exited with 0 +++ [ 21.876669][ T288] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 21.884680][ T288] RBP: ffffc9000094ff08 R08: ffffffff81b62ffb R09: ffffed1023892c2e [ 21.892489][ T288] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002 [ 21.900297][ T288] R13: 0000000000000010 R14: 00000000ffffff01 R15: dffffc0000000000 [ 21.908110][ T288] FS: 00007fb43311c6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.916875][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.923299][ T288] CR2: 00007fb4330fbd58 CR3: 000000011e3d8000 CR4: 00000000003506b0 [ 21.931128][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.938921][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.946732][ T288] Call Trace: [ 21.949864][ T288] ? __die_body+0x62/0xb0 [ 21.954020][ T288] ? die_addr+0x9f/0xd0 [ 21.958017][ T288] ? exc_general_protection+0x3ff/0x490 [ 21.963400][ T288] ? asm_exc_general_protection+0x1e/0x30 [ 21.968960][ T288] ? dput+0x8b/0x310 [ 21.972684][ T288] ? do_renameat2+0x5e6/0x1130 [ 21.977286][ T288] ? fsnotify_move+0x290/0x290 [ 21.981883][ T288] ? getname_flags+0x1fd/0x520 [ 21.986486][ T288] __x64_sys_rename+0x86/0x90 [ 21.991004][ T288] do_syscall_64+0x34/0x70 [ 21.995252][ T288] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.000980][ T288] RIP: 0033:0x7fb43315a2b9 [ 22.005230][ T288] 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 [ 22.024669][ T288] RSP: 002b:00007fb43311c218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 22.032918][ T288] RAX: ffffffffffffffda RBX: 00007fb4331e3408 RCX: 00007fb43315a2b9 [ 22.040729][ T288] RDX: 00007fb43315a2b9 RSI: 0000000020000140 RDI: 0000000020000100 [ 22.048538][ T288] RBP: 00007fb4331e3400 R08: 0000000000000000 R09: 0000000000000000 [ 22.056347][ T288] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb4331b1018 [ 22.064160][ T288] R13: 0030656c69662f2e R14: 0030656c69662f30 R15: 00007fb4331b100e [ 22.071970][ T288] Modules linked in: [ 22.076382][ T288] ---[ end trace 3e7f437283b4f10e ]--- [ 22.081714][ T288] RIP: 0010:do_renameat2+0x5e6/0x1130 [ 22.086857][ T288] Code: 89 de 8b 54 24 3c e8 09 31 ff ff 49 89 c5 48 3d 01 f0 ff ff 72 0d e8 49 a0 b6 ff 44 89 eb e9 d7 03 00 00 4d 89 ec 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 0f 85 d6 05 00 00 41 8b 5d 00 be 00 00 70 00 [ 22.106368][ T288] RSP: 0018:ffffc9000094fd00 EFLAGS: 00010202 [ 22.112243][ T288] RAX: 0000000000000010 RBX: ffff88811c496110 RCX: ffff88811e4093c0 [ 22.120047][ T288] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 22.127842][ T288] RBP: ffffc9000094ff08 R08: ffffffff81b62ffb R09: ffffed1023892c2e [ 22.135638][ T288] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002 [ 22.143473][ T288] R13: 0000000000000010 R14: 00000000ffffff01 R15: dffffc0000000000 [ 22.151274][ T288] FS: 00007fb43311c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.160082][ T288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.166452][ T288] CR2: 00007fb4331b0e98 CR3: 000000011e3d8000 CR4: 00000000003506a0 [ 22.174291][ T288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.182081][ T288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.189908][ T288] Kernel panic - not syncing: Fatal exception [ 22.196282][ T288] Kernel Offset: disabled [ 22.200407][ T288] Rebooting in 86400 seconds..