./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor630898688 <...> Warning: Permanently added '10.128.0.14' (ED25519) to the list of known hosts. execve("./syz-executor630898688", ["./syz-executor630898688"], 0x7ffe8a1ea140 /* 10 vars */) = 0 brk(NULL) = 0x55556cc8c000 brk(0x55556cc8cd00) = 0x55556cc8cd00 arch_prctl(ARCH_SET_FS, 0x55556cc8c380) = 0 set_tid_address(0x55556cc8c650) = 5218 set_robust_list(0x55556cc8c660, 24) = 0 rseq(0x55556cc8cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor630898688", 4096) = 27 getrandom("\xfa\x2b\x2f\xf4\x36\x8e\x09\xf2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556cc8cd00 brk(0x55556ccadd00) = 0x55556ccadd00 brk(0x55556ccae000) = 0x55556ccae000 mprotect(0x7ff36f668000, 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 5219 attached [pid 5219] set_robust_list(0x55556cc8c660, 24) = 0 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5218] <... clone resumed>, child_tidptr=0x55556cc8c650) = 5219 [pid 5219] setpgid(0, 0) = 0 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5219] write(3, "1000", 4) = 4 [pid 5219] close(3) = 0 [pid 5219] write(1, "executing program\n", 18executing program ) = 18 [pid 5219] memfd_create("syzkaller", 0) = 3 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff367000000 [pid 5219] 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 5219] munmap(0x7ff367000000, 138412032) = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5219] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5219] close(3) = 0 [pid 5219] close(4) = 0 [pid 5219] mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0777) = 0 [pid 5219] mount("/dev/loop0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "sysv", MS_NOSUID|MS_DIRSYNC|MS_NODIRATIME|MS_SILENT|MS_STRICTATIME, "") = 0 [pid 5219] openat(AT_FDCWD, "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", O_RDONLY|O_DIRECTORY) = 3 [pid 5219] chdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) syzkaller login: [ 60.551399][ T5219] loop0: detected capacity change from 0 to 128 [ 60.584841][ T5219] syz-executor630: attempt to access beyond end of device [ 60.584841][ T5219] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 60.599372][ T5219] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 60.607897][ T5219] syz-executor630: attempt to access beyond end of device [ 60.607897][ T5219] loop0: rw=0, sector=17666806, nr_sectors = 2 limit=128 [ 60.622206][ T5219] Buffer I/O error on dev loop0, logical block 8833403, async page read [ 60.630684][ T5219] syz-executor630: attempt to access beyond end of device [ 60.630684][ T5219] loop0: rw=0, sector=26539618, nr_sectors = 2 limit=128 [ 60.644826][ T5219] Buffer I/O error on dev loop0, logical block 13269809, async page read [ 60.653262][ T5219] syz-executor630: attempt to access beyond end of device [ 60.653262][ T5219] loop0: rw=0, sector=16147212, nr_sectors = 2 limit=128 [ 60.667391][ T5219] Buffer I/O error on dev loop0, logical block 8073606, async page read [ 60.675940][ T5219] syz-executor630: attempt to access beyond end of device [ 60.675940][ T5219] loop0: rw=0, sector=6491542, nr_sectors = 2 limit=128 [ 60.689989][ T5219] Buffer I/O error on dev loop0, logical block 3245771, async page read [ 60.698381][ T5219] syz-executor630: attempt to access beyond end of device [ 60.698381][ T5219] loop0: rw=0, sector=17668342, nr_sectors = 2 limit=128 [ 60.712410][ T5219] Buffer I/O error on dev loop0, logical block 8834171, async page read [ 60.720790][ T5219] syz-executor630: attempt to access beyond end of device [ 60.720790][ T5219] loop0: rw=0, sector=26932834, nr_sectors = 2 limit=128 [ 60.734821][ T5219] Buffer I/O error on dev loop0, logical block 13466417, async page read [ 60.743259][ T5219] syz-executor630: attempt to access beyond end of device [ 60.743259][ T5219] loop0: rw=0, sector=16147212, nr_sectors = 2 limit=128 [ 60.757320][ T5219] Buffer I/O error on dev loop0, logical block 8073606, async page read [ 60.766236][ T5219] syz-executor630: attempt to access beyond end of device [ 60.766236][ T5219] loop0: rw=0, sector=6491548, nr_sectors = 2 limit=128 [ 60.780178][ T5219] Buffer I/O error on dev loop0, logical block 3245774, async page read [ 60.788572][ T5219] syz-executor630: attempt to access beyond end of device [ 60.788572][ T5219] loop0: rw=0, sector=17669878, nr_sectors = 2 limit=128 [ 60.802596][ T5219] Buffer I/O error on dev loop0, logical block 8834939, async page read [pid 5219] mkdir("./file0", 0777 [pid 5218] kill(-5219, SIGKILL) = 0 [pid 5218] kill(5219, SIGKILL) = 0 [pid 5218] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5218] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5218] getdents64(3, 0x55556cc8d6f0 /* 2 entries */, 32768) = 48 [pid 5218] getdents64(3, 0x55556cc8d6f0 /* 0 entries */, 32768) = 0 [pid 5218] close(3) = 0 [ 76.755636][ T941] cfg80211: failed to load regulatory.db [ 105.242259][ T5219] ------------[ cut here ]------------ [ 105.247780][ T5219] WARNING: CPU: 1 PID: 5219 at fs/inode.c:391 inc_nlink+0x129/0x140 [ 105.255798][ T5219] Modules linked in: [ 105.259723][ T5219] CPU: 1 UID: 0 PID: 5219 Comm: syz-executor630 Not tainted 6.11.0-rc2-syzkaller-00315-g7006fe2f7f78 #0 [ 105.270919][ T5219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 105.281105][ T5219] RIP: 0010:inc_nlink+0x129/0x140 [ 105.286553][ T5219] Code: ff e9 33 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 45 ff ff ff 4c 89 ef e8 82 ec e7 ff e9 38 ff ff ff e8 28 cc 83 ff 90 <0f> 0b 90 e9 7b ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 [ 105.306231][ T5219] RSP: 0018:ffffc90003a5fd30 EFLAGS: 00010293 [ 105.312291][ T5219] RAX: ffffffff820faac8 RBX: 1ffff1100fb56010 RCX: ffff88801a711e00 [ 105.320323][ T5219] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 105.328374][ T5219] RBP: 0000000000000000 R08: ffffffff820faa42 R09: 0000000000000000 [ 105.336397][ T5219] R10: ffffc90003a5fca8 R11: ffffffff82bd5740 R12: dffffc0000000000 [ 105.344430][ T5219] R13: ffff88807dab0080 R14: ffff88807dab0038 R15: 0000000000000000 [ 105.352403][ T5219] FS: 000055556cc8c380(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 [ 105.361386][ T5219] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.368066][ T5219] CR2: 000055b2f65e7d90 CR3: 000000007875a000 CR4: 00000000003506f0 [ 105.376115][ T5219] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 105.384137][ T5219] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 105.392094][ T5219] Call Trace: [ 105.395403][ T5219] [ 105.398337][ T5219] ? __warn+0x163/0x4e0 [ 105.402488][ T5219] ? inc_nlink+0x129/0x140 [ 105.406956][ T5219] ? report_bug+0x2b3/0x500 [ 105.411478][ T5219] ? inc_nlink+0x129/0x140 [ 105.415933][ T5219] ? handle_bug+0x3e/0x70 [ 105.420268][ T5219] ? exc_invalid_op+0x1a/0x50 [ 105.425005][ T5219] ? asm_exc_invalid_op+0x1a/0x20 [ 105.430034][ T5219] ? __pfx_sysv_mkdir+0x10/0x10 [ 105.434924][ T5219] ? inc_nlink+0xa2/0x140 [ 105.439272][ T5219] ? inc_nlink+0x128/0x140 [ 105.443678][ T5219] ? inc_nlink+0x129/0x140 [ 105.448159][ T5219] sysv_mkdir+0x21/0x130 [ 105.452421][ T5219] vfs_mkdir+0x2f9/0x4f0 [ 105.456723][ T5219] do_mkdirat+0x264/0x3a0 [ 105.461065][ T5219] ? __check_object_size+0x49c/0x900 [ 105.466445][ T5219] ? __pfx_do_mkdirat+0x10/0x10 [ 105.471333][ T5219] ? getname_flags+0x1e3/0x540 [ 105.476158][ T5219] __x64_sys_mkdir+0x6c/0x80 [ 105.480758][ T5219] do_syscall_64+0xf3/0x230 [ 105.485326][ T5219] ? clear_bhb_loop+0x35/0x90 [ 105.490017][ T5219] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 105.495950][ T5219] RIP: 0033:0x7ff36f5eab17 [ 105.500371][ T5219] Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 105.520034][ T5219] RSP: 002b:00007ffef7e4ffb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 105.528485][ T5219] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff36f5eab17 [ 105.536501][ T5219] RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000140 [ 105.544649][ T5219] RBP: 0000000020000140 R08: 0000000000000000 R09: 0000000000000000 [ 105.552604][ T5219] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 105.560695][ T5219] R13: 00007ffef7e50050 R14: 0000000000000000 R15: 0000000000000000 [ 105.568728][ T5219] [ 105.571745][ T5219] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 105.579012][ T5219] CPU: 1 UID: 0 PID: 5219 Comm: syz-executor630 Not tainted 6.11.0-rc2-syzkaller-00315-g7006fe2f7f78 #0 [ 105.590096][ T5219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 105.600138][ T5219] Call Trace: [ 105.603402][ T5219] [ 105.606315][ T5219] dump_stack_lvl+0x241/0x360 [ 105.611022][ T5219] ? __pfx_dump_stack_lvl+0x10/0x10 [ 105.616208][ T5219] ? __pfx__printk+0x10/0x10 [ 105.620783][ T5219] ? _printk+0xd5/0x120 [ 105.624938][ T5219] ? vscnprintf+0x5d/0x90 [ 105.629269][ T5219] panic+0x349/0x860 [ 105.633158][ T5219] ? __warn+0x172/0x4e0 [ 105.637304][ T5219] ? __pfx_panic+0x10/0x10 [ 105.641706][ T5219] ? show_trace_log_lvl+0x4e6/0x520 [ 105.646912][ T5219] __warn+0x346/0x4e0 [ 105.650885][ T5219] ? inc_nlink+0x129/0x140 [ 105.655293][ T5219] report_bug+0x2b3/0x500 [ 105.659616][ T5219] ? inc_nlink+0x129/0x140 [ 105.664025][ T5219] handle_bug+0x3e/0x70 [ 105.668167][ T5219] exc_invalid_op+0x1a/0x50 [ 105.672657][ T5219] asm_exc_invalid_op+0x1a/0x20 [ 105.677495][ T5219] RIP: 0010:inc_nlink+0x129/0x140 [ 105.682510][ T5219] Code: ff e9 33 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 45 ff ff ff 4c 89 ef e8 82 ec e7 ff e9 38 ff ff ff e8 28 cc 83 ff 90 <0f> 0b 90 e9 7b ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 [ 105.702099][ T5219] RSP: 0018:ffffc90003a5fd30 EFLAGS: 00010293 [ 105.708157][ T5219] RAX: ffffffff820faac8 RBX: 1ffff1100fb56010 RCX: ffff88801a711e00 [ 105.716116][ T5219] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 105.724073][ T5219] RBP: 0000000000000000 R08: ffffffff820faa42 R09: 0000000000000000 [ 105.732028][ T5219] R10: ffffc90003a5fca8 R11: ffffffff82bd5740 R12: dffffc0000000000 [ 105.740017][ T5219] R13: ffff88807dab0080 R14: ffff88807dab0038 R15: 0000000000000000 [ 105.747977][ T5219] ? __pfx_sysv_mkdir+0x10/0x10 [ 105.752820][ T5219] ? inc_nlink+0xa2/0x140 [ 105.757136][ T5219] ? inc_nlink+0x128/0x140 [ 105.761545][ T5219] sysv_mkdir+0x21/0x130 [ 105.765777][ T5219] vfs_mkdir+0x2f9/0x4f0 [ 105.770014][ T5219] do_mkdirat+0x264/0x3a0 [ 105.774327][ T5219] ? __check_object_size+0x49c/0x900 [ 105.779603][ T5219] ? __pfx_do_mkdirat+0x10/0x10 [ 105.784441][ T5219] ? getname_flags+0x1e3/0x540 [ 105.789194][ T5219] __x64_sys_mkdir+0x6c/0x80 [ 105.793771][ T5219] do_syscall_64+0xf3/0x230 [ 105.798276][ T5219] ? clear_bhb_loop+0x35/0x90 [ 105.802952][ T5219] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 105.808843][ T5219] RIP: 0033:0x7ff36f5eab17 [ 105.813248][ T5219] Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 105.832856][ T5219] RSP: 002b:00007ffef7e4ffb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 105.841268][ T5219] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff36f5eab17 [ 105.849230][ T5219] RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000140 [ 105.857208][ T5219] RBP: 0000000020000140 R08: 0000000000000000 R09: 0000000000000000 [ 105.865178][ T5219] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 105.873156][ T5219] R13: 00007ffef7e50050 R14: 0000000000000000 R15: 0000000000000000 [ 105.881146][ T5219] [ 105.884386][ T5219] Kernel Offset: disabled [ 105.888749][ T5219] Rebooting in 86400 seconds..