================================================================== 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:400 [inline] BUG: KASAN: user-memory-access in __refcount_sub_and_test include/linux/refcount.h:264 [inline] BUG: KASAN: user-memory-access in __refcount_dec_and_test include/linux/refcount.h:307 [inline] BUG: KASAN: user-memory-access in refcount_dec_and_test include/linux/refcount.h:325 [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+0x47c/0x670 fs/inode.c:373 Write of size 4 at addr 0000000b00000000 by task syz.5.1014/11035 CPU: 1 UID: 0 PID: 11035 Comm: syz.5.1014 Not tainted 6.12.0-next-20241128-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_report+0xe8/0x550 mm/kasan/report.c:492 kasan_report+0x143/0x180 mm/kasan/report.c:602 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline] __refcount_sub_and_test include/linux/refcount.h:264 [inline] __refcount_dec_and_test include/linux/refcount.h:307 [inline] refcount_dec_and_test include/linux/refcount.h:325 [inline] posix_acl_release include/linux/posix_acl.h:57 [inline] __destroy_inode+0x47c/0x670 fs/inode.c:373 destroy_inode fs/inode.c:384 [inline] evict+0x785/0x9a0 fs/inode.c:827 dispose_list fs/inode.c:845 [inline] evict_inodes+0x6f6/0x790 fs/inode.c:899 generic_shutdown_super+0xa0/0x2d0 fs/super.c:627 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:938 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 get_signal+0x16b2/0x1750 kernel/signal.c:3016 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] irqentry_exit_to_user_mode+0x7e/0x250 kernel/entry/common.c:231 exc_page_fault+0x590/0x8b0 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0xe4 Code: Unable to access opcode bytes at 0xba. RSP: 002b:00000000200000f8 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007fa9bf945fa0 RCX: 00007fa9bf77ff19 RDX: 0000000020000140 RSI: 00000000200000f0 RDI: 0000000000802000 RBP: 00007fa9bf7f3986 R08: 0000000020000200 R09: 0000000020000200 R10: 0000000020000180 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa9bf945fa0 R15: 00007ffd59012088 ==================================================================