loop0: detected capacity change from 0 to 1024 ================================================================================ UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:131:9 index 3659 is out of range for type 'long unsigned int [8]' CPU: 1 PID: 16045 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-11275-gdb906f0ca6bb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0x111/0x150 lib/ubsan.c:348 decode_tail kernel/locking/qspinlock.c:131 [inline] __pv_queued_spin_lock_slowpath+0xb37/0xc70 kernel/locking/qspinlock.c:471 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x20e/0x2b0 kernel/locking/spinlock_debug.c:115 __mutex_lock_common kernel/locking/mutex.c:617 [inline] __mutex_lock+0x4c3/0x1340 kernel/locking/mutex.c:747 reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27 reiserfs_readdir_inode+0x1ab/0x14b0 fs/reiserfs/dir.c:79 iterate_dir+0x1e5/0x5f0 fs/readdir.c:106 __do_sys_getdents64 fs/readdir.c:405 [inline] __se_sys_getdents64 fs/readdir.c:390 [inline] __x64_sys_getdents64+0x14f/0x2e0 fs/readdir.c:390 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fad58c7cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 RSP: 002b:00007fad599450c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007fad58d9bf80 RCX: 00007fad58c7cae9 RDX: 00000000000000f6 RSI: 00000000200003c0 RDI: 0000000000000004 RBP: 00007fad58cc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fad58d9bf80 R15: 00007ffdedc21c88 ================================================================================