ci-upstream-linux-next-kasan-gce-root/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-linux-next-kasan-gce-root/syz-executor4160651637 <...> Warning: Permanently added '10.128.1.120' (ED25519) to the list of known hosts. execve("ci-upstream-linux-next-kasan-gce-root/syz-executor4160651637", ["ci-upstream-linux-next-kasan-gce-root/syz-executor4160651637"], 0x7ffd5ec49100 /* 10 vars */) = 0 brk(NULL) = 0x55558cab6000 brk(0x55558cab6d80) = 0x55558cab6d80 arch_prctl(ARCH_SET_FS, 0x55558cab6400) = 0 set_tid_address(0x55558cab66d0) = 5625 set_robust_list(0x55558cab66e0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci-upstream-linux-next-kasan-gce-root/syz-executor4160651637", 4096) = 66 getrandom("\x1b\x57\x9f\x4b\x12\xc4\x0b\xd3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558cab6d80 brk(0x55558cad7d80) = 0x55558cad7d80 brk(0x55558cad8000) = 0x55558cad8000 mprotect(0x7f3fff404000, 20480, 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", 18) = 18 executing program memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3ff6e00000 write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x8f\x24\x2d\x5f\x49\x6d\x50\x0b\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 munmap(0x7f3ff6e00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("\x2e\x02", 0777) = 0 mount("/dev/loop0", "\x2e\x02", "ntfs3", MS_NOSUID|MS_NOEXEC|MS_NOATIME|MS_SILENT|MS_POSIXACL|MS_I_VERSION|MS_STRICTATIME, "iocharset=cp936,") = 0 [ 78.042947][ T5625] loop0: detected capacity change from 0 to 4096 [ 78.085120][ T5625] ntfs3(loop0): Mark volume as dirty due to NTFS errors openat(AT_FDCWD, "\x2e\x02", O_RDONLY|O_DIRECTORY) = 3 chdir("\x2e\x02") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 4 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 open(".", O_RDONLY|O_LARGEFILE) = 4 [ 78.097861][ T5625] ntfs3(loop0): Failed to load $Extend (-22). [ 78.097885][ T5625] ntfs3(loop0): Failed to initialize $Extend. [ 78.124040][ T5625] [ 78.126397][ T5625] ===================================== [ 78.131934][ T5625] WARNING: bad unlock balance detected! [ 78.137495][ T5625] syzkaller #0 Not tainted [ 78.141905][ T5625] ------------------------------------- [ 78.147444][ T5625] syz-executor416/5625 is trying to release lock (&ni->ni_lock) at: [ 78.155430][ T5625] [] ntfs_readdir+0xac8/0xf00 [ 78.161684][ T5625] but there are no more locks to release! [ 78.167392][ T5625] [ 78.167392][ T5625] other info that might help us debug this: [ 78.175429][ T5625] locks held by syz-executor416/5625: 2, last CPU#0: [ 78.182079][ T5625] #0: ffff8880741d62b0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x118/0x160 [ 78.191111][ T5625] #1: ffff888076ed7490 (&type->i_mutex_dir_key#6){.+.+}-{4:4}, at: iterate_dir+0x287/0x880 [ 78.201198][ T5625] [ 78.201198][ T5625] stack backtrace: [ 78.207104][ T5625] CPU: 0 UID: 0 PID: 5625 Comm: syz-executor416 Not tainted syzkaller #0 PREEMPT(full) [ 78.216806][ T5625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 78.226865][ T5625] Call Trace: [ 78.230125][ T5625] [ 78.233037][ T5625] dump_stack_lvl+0xe8/0x150 [ 78.237609][ T5625] ? ntfs_readdir+0xac8/0xf00 [ 78.242277][ T5625] print_unlock_imbalance_bug+0xdc/0xf0 [ 78.247801][ T5625] lock_release+0x252/0x3c0 [ 78.252284][ T5625] ? ntfs_readdir+0xac8/0xf00 [ 78.256936][ T5625] __mutex_unlock_slowpath+0x88/0x900 [ 78.262285][ T5625] ? __pfx_filldir+0x10/0x10 [ 78.266857][ T5625] ? ntfs_read_hdr+0xbcb/0xc10 [ 78.271613][ T5625] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 78.277590][ T5625] ntfs_readdir+0xac8/0xf00 [ 78.282078][ T5625] ? __pfx_ntfs_readdir+0x10/0x10 [ 78.287084][ T5625] ? iterate_dir+0x287/0x880 [ 78.291673][ T5625] iterate_dir+0x3db/0x880 [ 78.296069][ T5625] __se_sys_getdents+0xf1/0x270 [ 78.300916][ T5625] ? __pfx___se_sys_getdents+0x10/0x10 [ 78.306355][ T5625] ? __pfx_filldir+0x10/0x10 [ 78.310933][ T5625] do_syscall_64+0x166/0x520 [ 78.315513][ T5625] ? trace_irq_disable+0x3b/0x140 [ 78.320533][ T5625] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.326576][ T5625] ? clear_bhb_loop+0x70/0xc0 [ 78.331235][ T5625] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.337103][ T5625] RIP: 0033:0x7f3fff35c289 [ 78.341509][ T5625] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d8 ff ff ff f7 d8 64 89 01 48 [ 78.361091][ T5625] RSP: 002b:00007ffe78a3d2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e [ 78.369481][ T5625] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f3fff35c289 [ 78.377428][ T5625] RDX: 00000000000000b8 RSI: 0000200000000040 RDI: 0000000000000004 [ 78.385375][ T5625] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffe78a3d3f8 [ 78.393326][ T5625] R10: 00007f3fff3acfb3 R11: 0000000000000246 R12: 00007ffe78a3d3e8 getdents(4, 0x200000000040 /* 6 entries */, 184) = 176 exit_group(0) = ? +++ exited with 0 +++ [ 78.401291][ T5625] R13: 0000000000000002 R14: 00007f3fff404c80 R15: 000000000000000