EXT4-fs (loop2): Mount option "noacl" will be removed by 3.5 Contact linux-ext4@vger.kernel.org if you think we should keep it. EXT4-fs (loop2): Ignoring removed orlov option EXT4-fs (loop2): mounted filesystem without journal. Opts: block_validity,bsddf,noacl,norecovery,debug_want_extra_isize=0x0000000000000080,orlov,nogrpid,noauto_da_alloc,norecovery,,errors=continue. Quota mode: none. ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_xattr_list_entries fs/ext4/xattr.c:670 [inline] BUG: KASAN: slab-out-of-bounds in ext4_xattr_ibody_list fs/ext4/xattr.c:740 [inline] BUG: KASAN: slab-out-of-bounds in ext4_listxattr+0x4a9/0xc60 fs/ext4/xattr.c:765 Read of size 4 at addr ffff8881113b0090 by task syz.2.17/372 CPU: 0 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0x10f/0x150 mm/kasan/report.c:444 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308 ext4_xattr_list_entries fs/ext4/xattr.c:670 [inline] ext4_xattr_ibody_list fs/ext4/xattr.c:740 [inline] ext4_listxattr+0x4a9/0xc60 fs/ext4/xattr.c:765 vfs_listxattr fs/xattr.c:448 [inline] listxattr+0x28f/0x300 fs/xattr.c:783 path_listxattr+0xe1/0x1b0 fs/xattr.c:807 __do_sys_llistxattr fs/xattr.c:825 [inline] __se_sys_llistxattr fs/xattr.c:822 [inline] __x64_sys_llistxattr+0x7d/0x90 fs/xattr.c:822 x64_sys_call+0x584/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:196 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f36a09c6e59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdd9f71478 EFLAGS: 00000246 ORIG_RAX: 00000000000000c3 RAX: ffffffffffffffda RBX: 00007f36a0c4efa0 RCX: 00007f36a09c6e59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000400 RBP: 00007f36a0a5ce6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f36a0c4efac R14: 00007f36a0c4efa0 R15: 00007f36a0c4efa0 Allocated by task 308: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] __kasan_slab_alloc+0xb7/0xe0 mm/kasan/common.c:466 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550 slab_alloc_node mm/slub.c:3245 [inline] slab_alloc mm/slub.c:3255 [inline] kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260 kmem_cache_zalloc include/linux/slab.h:740 [inline] lsm_file_alloc security/security.c:575 [inline] security_file_alloc+0x33/0x120 security/security.c:1532 __alloc_file+0xb5/0x2a0 fs/file_table.c:137 alloc_empty_file+0x97/0x180 fs/file_table.c:181 path_openat+0xf4/0x2f80 fs/namei.c:3736 do_filp_open+0x1df/0x400 fs/namei.c:3777 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236 do_sys_open fs/open.c:1252 [inline] __do_sys_openat fs/open.c:1268 [inline] __se_sys_openat fs/open.c:1263 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1263 x64_sys_call+0x219/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 308: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4a/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1728 [inline] slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754 slab_free mm/slub.c:3526 [inline] kmem_cache_free+0x100/0x320 mm/slub.c:3544 security_file_free+0xc7/0xe0 security/security.c:1551 file_free fs/file_table.c:55 [inline] __fput+0x5fd/0x900 fs/file_table.c:324 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff8881113b0080 which belongs to the cache lsm_file_cache of size 16 The buggy address is located 0 bytes to the right of 16-byte region [ffff8881113b0080, ffff8881113b0090) The buggy address belongs to the page: page:ffffea000444ec00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8881113b04a0 pfn:0x1113b0 flags: 0x4000000000000200(slab|zone=1) raw: 4000000000000200 ffffea0004415640 0000000a0000000a ffff888100187c80 raw: ffff8881113b04a0 0000000080800075 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 104, ts 3844865768, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607 prep_new_page+0x1c/0x110 mm/page_alloc.c:2613 get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1937 [inline] new_slab+0xa0/0x4d0 mm/slub.c:2000 ___slab_alloc+0x3ac/0x840 mm/slub.c:3033 __slab_alloc+0x49/0x90 mm/slub.c:3120 slab_alloc_node mm/slub.c:3211 [inline] slab_alloc mm/slub.c:3255 [inline] kmem_cache_alloc+0x138/0x260 mm/slub.c:3260 kmem_cache_zalloc include/linux/slab.h:740 [inline] lsm_file_alloc security/security.c:575 [inline] security_file_alloc+0x33/0x120 security/security.c:1532 __alloc_file+0xb5/0x2a0 fs/file_table.c:137 alloc_empty_file+0x97/0x180 fs/file_table.c:181 path_openat+0xf4/0x2f80 fs/namei.c:3736 do_filp_open+0x1df/0x400 fs/namei.c:3777 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236 do_sys_open fs/open.c:1252 [inline] __do_sys_openat fs/open.c:1268 [inline] __se_sys_openat fs/open.c:1263 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1263 x64_sys_call+0x219/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 page_owner free stack trace missing Memory state around the buggy address: ffff8881113aff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881113b0000: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc >ffff8881113b0080: fa fb fc fc fb fb fc fc fa fb fc fc fb fb fc fc ^ ffff8881113b0100: fa fb fc fc fb fb fc fc fb fb fc fc fa fb fc fc ffff8881113b0180: fb fb fc fc fb fb fc fc fa fb fc fc fa fb fc fc ==================================================================