================================================================== BUG: KASAN: user-memory-access in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: user-memory-access in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:176 [inline] BUG: KASAN: user-memory-access in __refcount_sub_and_test include/linux/refcount.h:272 [inline] BUG: KASAN: user-memory-access in __refcount_dec_and_test include/linux/refcount.h:315 [inline] BUG: KASAN: user-memory-access in refcount_dec_and_test include/linux/refcount.h:333 [inline] BUG: KASAN: user-memory-access in posix_acl_release include/linux/posix_acl.h:57 [inline] BUG: KASAN: user-memory-access in __destroy_inode+0x422/0x5d0 fs/inode.c:297 Write of size 4 at addr 0000000b00000000 by task syz-executor.0/5352 CPU: 0 PID: 5352 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller-00368-g5e89d62ec101 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_report+0xe6/0x540 mm/kasan/report.c:465 kasan_report+0x172/0x1a0 mm/kasan/report.c:572 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:187 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:176 [inline] __refcount_sub_and_test include/linux/refcount.h:272 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] posix_acl_release include/linux/posix_acl.h:57 [inline] __destroy_inode+0x422/0x5d0 fs/inode.c:297 destroy_inode fs/inode.c:308 [inline] evict+0x51b/0x620 fs/inode.c:680 dispose_list fs/inode.c:698 [inline] evict_inodes+0x5f4/0x690 fs/inode.c:748 generic_shutdown_super+0x94/0x340 fs/super.c:479 kill_block_super+0x80/0xe0 fs/super.c:1407 deactivate_locked_super+0xa0/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x60/0x260 kernel/entry/common.c:297 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f265e08d5d7 Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 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 RSP: 002b:00007ffd28366668 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f265e08d5d7 RDX: 00007ffd28366739 RSI: 000000000000000a RDI: 00007ffd28366730 RBP: 00007ffd28366730 R08: 00000000ffffffff R09: 00007ffd28366500 R10: 0000555555eef893 R11: 0000000000000246 R12: 00007f265e0e6cdc R13: 00007ffd283677f0 R14: 0000555555eef810 R15: 00007ffd28367830 ==================================================================