./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1401471161 <...> Warning: Permanently added '10.128.0.175' (ED25519) to the list of known hosts. execve("./syz-executor1401471161", ["./syz-executor1401471161"], 0x7fffddb58310 /* 10 vars */) = 0 brk(NULL) = 0x55556d11e000 brk(0x55556d11ed00) = 0x55556d11ed00 arch_prctl(ARCH_SET_FS, 0x55556d11e380) = 0 set_tid_address(0x55556d11e650) = 5855 set_robust_list(0x55556d11e660, 24) = 0 rseq(0x55556d11eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1401471161", 4096) = 28 getrandom("\xe9\x37\x42\xa2\x35\x99\xd3\x63", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556d11ed00 brk(0x55556d13fd00) = 0x55556d13fd00 brk(0x55556d140000) = 0x55556d140000 mprotect(0x7f8cbe4c9000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5856 attached [pid 5856] set_robust_list(0x55556d11e660, 24) = 0 [pid 5855] <... clone resumed>, child_tidptr=0x55556d11e650) = 5856 [pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5856] setpgid(0, 0) = 0 [pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5856] write(3, "1000", 4) = 4 [pid 5856] close(3) = 0 [pid 5856] write(1, "executing program\n", 18executing program ) = 18 [pid 5856] memfd_create("syzkaller", 0) = 3 [pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8cb6000000 [pid 5856] write(3, "\xb5\x84\x31\x7b\xb6\x84\x31\x7b\xb7\x84\x31\x7b\xb8\x84\x31\x7b\xb9\x84\x31\x7b\xba\x84\x31\x7b\xbb\x84\x31\x7b\xbc\x84\x31\x7b\xbd\x84\x31\x7b\xbe\x84\x31\x7b\xbf\x84\x31\x7b\xc0\x84\x31\x7b\xc1\x84\x31\x7b\xc2\x84\x31\x7b\xc3\x84\x31\x7b\xc4\x84\x31\x7b\xc5\x84\x31\x7b\xc6\x84\x31\x7b\xc7\x84\x31\x7b\xc8\x84\x31\x7b\xc9\x84\x31\x7b\xca\x84\x31\x7b\xcb\x84\x31\x7b\xcc\x84\x31\x7b\xcd\x84\x31\x7b"..., 65536) = 65536 [pid 5856] munmap(0x7f8cb6000000, 138412032) = 0 [pid 5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5856] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5856] close(3) = 0 [pid 5856] close(4) = 0 [pid 5856] mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0 [pid 5856] mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "sysv", MS_SILENT|MS_RELATIME|MS_STRICTATIME, "18446744073709551615") = 0 [pid 5856] openat(AT_FDCWD, "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", O_RDONLY|O_DIRECTORY) = 3 [pid 5856] chdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f") = 0 [pid 5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 121.710706][ T5856] loop0: detected capacity change from 0 to 128 [ 121.740227][ T5856] syz-executor140: attempt to access beyond end of device [ 121.740227][ T5856] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 121.754528][ T5856] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 121.763409][ T5856] syz-executor140: attempt to access beyond end of device [ 121.763409][ T5856] loop0: rw=0, sector=17666806, nr_sectors = 2 limit=128 [ 121.777536][ T5856] Buffer I/O error on dev loop0, logical block 8833403, async page read [ 121.786291][ T5856] syz-executor140: attempt to access beyond end of device [ 121.786291][ T5856] loop0: rw=0, sector=26539618, nr_sectors = 2 limit=128 [ 121.800395][ T5856] Buffer I/O error on dev loop0, logical block 13269809, async page read [ 121.808989][ T5856] syz-executor140: attempt to access beyond end of device [ 121.808989][ T5856] loop0: rw=0, sector=16147212, nr_sectors = 2 limit=128 [ 121.823103][ T5856] Buffer I/O error on dev loop0, logical block 8073606, async page read [ 121.831729][ T5856] syz-executor140: attempt to access beyond end of device [ 121.831729][ T5856] loop0: rw=0, sector=6491542, nr_sectors = 2 limit=128 [ 121.845712][ T5856] Buffer I/O error on dev loop0, logical block 3245771, async page read [ 121.854661][ T5856] syz-executor140: attempt to access beyond end of device [ 121.854661][ T5856] loop0: rw=0, sector=17668342, nr_sectors = 2 limit=128 [ 121.868696][ T5856] Buffer I/O error on dev loop0, logical block 8834171, async page read [ 121.877121][ T5856] syz-executor140: attempt to access beyond end of device [ 121.877121][ T5856] loop0: rw=0, sector=26932834, nr_sectors = 2 limit=128 [ 121.891167][ T5856] Buffer I/O error on dev loop0, logical block 13466417, async page read [ 121.899707][ T5856] syz-executor140: attempt to access beyond end of device [ 121.899707][ T5856] loop0: rw=0, sector=16147212, nr_sectors = 2 limit=128 [ 121.913758][ T5856] Buffer I/O error on dev loop0, logical block 8073606, async page read [ 121.923113][ T5856] syz-executor140: attempt to access beyond end of device [ 121.923113][ T5856] loop0: rw=0, sector=6491548, nr_sectors = 2 limit=128 [ 121.937128][ T5856] Buffer I/O error on dev loop0, logical block 3245774, async page read [ 121.945620][ T5856] syz-executor140: attempt to access beyond end of device [ 121.945620][ T5856] loop0: rw=0, sector=17669878, nr_sectors = 2 limit=128 [ 121.959738][ T5856] Buffer I/O error on dev loop0, logical block 8834939, async page read [pid 5856] mkdirat(AT_FDCWD, "./file1", 000 [pid 5855] kill(-5856, SIGKILL) = 0 [pid 5855] kill(5856, SIGKILL) = 0 [pid 5855] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5855] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5855] getdents64(3, 0x55556d11f6f0 /* 2 entries */, 32768) = 48 [pid 5855] getdents64(3, 0x55556d11f6f0 /* 0 entries */, 32768) = 0 [pid 5855] close(3) = 0 [ 172.710881][ T5856] ------------[ cut here ]------------ [ 172.716451][ T5856] WARNING: CPU: 1 PID: 5856 at fs/inode.c:464 inc_nlink+0x127/0x150 [ 172.724468][ T5856] Modules linked in: [ 172.728489][ T5856] CPU: 1 UID: 0 PID: 5856 Comm: syz-executor140 Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0 [ 172.739345][ T5856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 172.749502][ T5856] RIP: 0010:inc_nlink+0x127/0x150 [ 172.754580][ T5856] Code: ff e9 35 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 47 ff ff ff 4c 89 ef e8 24 d1 e5 ff e9 3a ff ff ff e8 ba 40 7e ff 90 <0f> 0b 90 e9 7b ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 49 [ 172.774294][ T5856] RSP: 0018:ffffc90003f5fd30 EFLAGS: 00010293 [ 172.780444][ T5856] RAX: ffffffff82170b76 RBX: 1ffff1100e783810 RCX: ffff88807c05bc00 [ 172.788478][ T5856] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 172.796510][ T5856] RBP: 0000000000000000 R08: ffffffff82170af0 R09: 0000000000000000 [ 172.804508][ T5856] R10: ffffc90003f5fca8 R11: ffffffff82ba3d80 R12: dffffc0000000000 [ 172.812606][ T5856] R13: ffff888073c1c080 R14: ffff888073c1c038 R15: 0000000000000000 [ 172.820665][ T5856] FS: 000055556d11e380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 172.829693][ T5856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 172.836371][ T5856] CR2: 000055556d1276f8 CR3: 000000007879a000 CR4: 00000000003526f0 [ 172.844375][ T5856] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 172.852401][ T5856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 172.860436][ T5856] Call Trace: [ 172.863723][ T5856] [ 172.866785][ T5856] ? __warn+0x168/0x4e0 [ 172.871010][ T5856] ? inc_nlink+0x127/0x150 [ 172.875520][ T5856] ? report_bug+0x2b3/0x500 [ 172.880118][ T5856] ? inc_nlink+0x127/0x150 [ 172.884556][ T5856] ? handle_bug+0x60/0x90 [ 172.888964][ T5856] ? exc_invalid_op+0x1a/0x50 [ 172.893709][ T5856] ? asm_exc_invalid_op+0x1a/0x20 [ 172.898820][ T5856] ? __pfx_sysv_mkdir+0x10/0x10 [ 172.903759][ T5856] ? inc_nlink+0xa0/0x150 [ 172.908174][ T5856] ? inc_nlink+0x126/0x150 [ 172.912628][ T5856] ? inc_nlink+0x127/0x150 [ 172.917218][ T5856] sysv_mkdir+0x21/0x130 [ 172.921503][ T5856] vfs_mkdir+0x2f9/0x4f0 [ 172.925896][ T5856] do_mkdirat+0x264/0x3a0 [ 172.930541][ T5856] ? __pfx_do_mkdirat+0x10/0x10 [ 172.935815][ T5856] ? getname_flags+0x1e3/0x540 [ 172.940759][ T5856] __x64_sys_mkdirat+0x87/0xa0 [ 172.945723][ T5856] do_syscall_64+0xf3/0x230 [ 172.950280][ T5856] ? clear_bhb_loop+0x35/0x90 [ 172.954998][ T5856] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 172.960996][ T5856] RIP: 0033:0x7f8cbe44ccd9 [ 172.965513][ T5856] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 b8 ff ff ff f7 d8 64 89 01 48 [ 172.985231][ T5856] RSP: 002b:00007fff98077808 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 172.993707][ T5856] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8cbe44ccd9 [ 173.001762][ T5856] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 00000000ffffff9c [ 173.009860][ T5856] RBP: 00007f8cbe4c95f0 R08: 0000000000009e7a R09: 000055556d11f4c0 [ 173.017923][ T5856] R10: 00007fff980776d0 R11: 0000000000000246 R12: 00007fff98077830 [ 173.025960][ T5856] R13: 00007fff98077a58 R14: 431bde82d7b634db R15: 00007f8cbe49503b [ 173.033983][ T5856] [ 173.037062][ T5856] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 173.044372][ T5856] CPU: 1 UID: 0 PID: 5856 Comm: syz-executor140 Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0 [ 173.055149][ T5856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 173.065231][ T5856] Call Trace: [ 173.068528][ T5856] [ 173.071485][ T5856] dump_stack_lvl+0x241/0x360 [ 173.076178][ T5856] ? __pfx_dump_stack_lvl+0x10/0x10 [ 173.081393][ T5856] ? __pfx__printk+0x10/0x10 [ 173.085986][ T5856] ? _printk+0xd5/0x120 [ 173.090147][ T5856] ? __init_begin+0x41000/0x41000 [ 173.095179][ T5856] ? vscnprintf+0x5d/0x90 [ 173.099561][ T5856] panic+0x349/0x880 [ 173.103469][ T5856] ? __warn+0x177/0x4e0 [ 173.107630][ T5856] ? __pfx_panic+0x10/0x10 [ 173.112049][ T5856] ? show_trace_log_lvl+0x3b2/0x410 [ 173.117262][ T5856] __warn+0x34b/0x4e0 [ 173.121246][ T5856] ? inc_nlink+0x127/0x150 [ 173.125715][ T5856] report_bug+0x2b3/0x500 [ 173.130047][ T5856] ? inc_nlink+0x127/0x150 [ 173.134473][ T5856] handle_bug+0x60/0x90 [ 173.138636][ T5856] exc_invalid_op+0x1a/0x50 [ 173.143165][ T5856] asm_exc_invalid_op+0x1a/0x20 [ 173.148032][ T5856] RIP: 0010:inc_nlink+0x127/0x150 [ 173.153080][ T5856] Code: ff e9 35 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 47 ff ff ff 4c 89 ef e8 24 d1 e5 ff e9 3a ff ff ff e8 ba 40 7e ff 90 <0f> 0b 90 e9 7b ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 49 [ 173.172705][ T5856] RSP: 0018:ffffc90003f5fd30 EFLAGS: 00010293 [ 173.178810][ T5856] RAX: ffffffff82170b76 RBX: 1ffff1100e783810 RCX: ffff88807c05bc00 [ 173.186794][ T5856] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 173.194829][ T5856] RBP: 0000000000000000 R08: ffffffff82170af0 R09: 0000000000000000 [ 173.202827][ T5856] R10: ffffc90003f5fca8 R11: ffffffff82ba3d80 R12: dffffc0000000000 [ 173.210822][ T5856] R13: ffff888073c1c080 R14: ffff888073c1c038 R15: 0000000000000000 [ 173.218833][ T5856] ? __pfx_sysv_mkdir+0x10/0x10 [ 173.223718][ T5856] ? inc_nlink+0xa0/0x150 [ 173.228085][ T5856] ? inc_nlink+0x126/0x150 [ 173.232541][ T5856] sysv_mkdir+0x21/0x130 [ 173.236812][ T5856] vfs_mkdir+0x2f9/0x4f0 [ 173.241077][ T5856] do_mkdirat+0x264/0x3a0 [ 173.245428][ T5856] ? __pfx_do_mkdirat+0x10/0x10 [ 173.250301][ T5856] ? getname_flags+0x1e3/0x540 [ 173.255163][ T5856] __x64_sys_mkdirat+0x87/0xa0 [ 173.259954][ T5856] do_syscall_64+0xf3/0x230 [ 173.264475][ T5856] ? clear_bhb_loop+0x35/0x90 [ 173.269169][ T5856] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 173.275074][ T5856] RIP: 0033:0x7f8cbe44ccd9 [ 173.279504][ T5856] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 b8 ff ff ff f7 d8 64 89 01 48 [ 173.299124][ T5856] RSP: 002b:00007fff98077808 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 173.307669][ T5856] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8cbe44ccd9 [ 173.315655][ T5856] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 00000000ffffff9c [ 173.323639][ T5856] RBP: 00007f8cbe4c95f0 R08: 0000000000009e7a R09: 000055556d11f4c0 [ 173.331643][ T5856] R10: 00007fff980776d0 R11: 0000000000000246 R12: 00007fff98077830 [ 173.339649][ T5856] R13: 00007fff98077a58 R14: 431bde82d7b634db R15: 00007f8cbe49503b [ 173.347645][ T5856] [ 173.350978][ T5856] Kernel Offset: disabled [ 173.355371][ T5856] Rebooting in 86400 seconds..