EXT4-fs (loop1): Test dummy encryption mode enabled [EXT4 FS bs=4096, gc=1, bpg=524288, ipg=32, mo=a842c018, mo2=0003] System zones: 0-5 ================================================================== BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline] BUG: KASAN: use-after-free in __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4722 Read of size 8 at addr ffff888135c5c7b8 by task syz.1.3165/10819 CPU: 0 PID: 10819 Comm: syz.1.3165 Tainted: G W 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+0xf1/0x140 mm/kasan/report.c:444 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 check_igot_inode fs/ext4/inode.c:-1 [inline] __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4722 ext4_quota_enable fs/ext4/super.c:6435 [inline] ext4_enable_quotas+0x33c/0x6d0 fs/ext4/super.c:6471 ext4_fill_super+0x8301/0x8bd0 fs/ext4/super.c:4982 mount_bdev+0x2ae/0x3e0 fs/super.c:1400 ext4_mount+0x34/0x40 fs/ext4/super.c:6650 legacy_get_tree+0xed/0x190 fs/fs_context.c:611 vfs_get_tree+0x89/0x260 fs/super.c:1530 do_new_mount+0x25a/0xa20 fs/namespace.c:3034 path_mount+0x659/0xff0 fs/namespace.c:3364 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x320/0x390 fs/namespace.c:3562 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 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: 0033:0x7efd265880ca Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007efd24fe0e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007efd24fe0ee0 RCX: 00007efd265880ca RDX: 0000200000000100 RSI: 0000200000000280 RDI: 00007efd24fe0ea0 RBP: 0000200000000100 R08: 00007efd24fe0ee0 R09: 0000000002800000 R10: 0000000002800000 R11: 0000000000000246 R12: 0000200000000280 R13: 00007efd24fe0ea0 R14: 0000000000000bc8 R15: 0000200000000140 Allocated by task 10083: 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+0xbd/0xf0 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 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2817 [inline] f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1459 alloc_inode fs/inode.c:264 [inline] new_inode_pseudo+0x62/0x210 fs/inode.c:1011 new_inode+0x28/0x1e0 fs/inode.c:1040 f2fs_new_inode+0xe8/0x12b0 fs/f2fs/namei.c:36 __f2fs_tmpfile+0xae/0x380 fs/f2fs/namei.c:802 f2fs_create_whiteout fs/f2fs/namei.c:879 [inline] f2fs_rename fs/f2fs/namei.c:929 [inline] f2fs_rename2+0x861/0x2430 fs/f2fs/namei.c:1270 vfs_rename+0xbca/0x10f0 fs/namei.c:4840 ovl_do_rename fs/overlayfs/overlayfs.h:258 [inline] ovl_check_rename_whiteout fs/overlayfs/super.c:1313 [inline] ovl_make_workdir fs/overlayfs/super.c:1433 [inline] ovl_get_workdir+0x772/0x1130 fs/overlayfs/super.c:1548 ovl_fill_super+0x18c2/0x2a20 fs/overlayfs/super.c:2104 mount_nodev+0x5c/0xf0 fs/super.c:1446 ovl_mount+0x2c/0x40 fs/overlayfs/super.c:2194 legacy_get_tree+0xed/0x190 fs/fs_context.c:611 vfs_get_tree+0x89/0x260 fs/super.c:1530 do_new_mount+0x25a/0xa20 fs/namespace.c:3034 path_mount+0x659/0xff0 fs/namespace.c:3364 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x320/0x390 fs/namespace.c:3562 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 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 Last potentially related work creation: kasan_save_stack+0x3a/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd2/0x100 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu_common kernel/rcu/tree.c:3011 [inline] call_rcu+0x10b/0xf80 kernel/rcu/tree.c:3129 destroy_inode fs/inode.c:319 [inline] evict+0x834/0x8d0 fs/inode.c:665 iput_final fs/inode.c:1779 [inline] iput+0x635/0x7c0 fs/inode.c:1805 dentry_unlink_inode+0x32f/0x3e0 fs/dcache.c:380 __dentry_kill+0x44f/0x650 fs/dcache.c:586 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1 dput+0x47/0x90 fs/dcache.c:893 ovl_check_rename_whiteout fs/overlayfs/super.c:1330 [inline] ovl_make_workdir fs/overlayfs/super.c:1433 [inline] ovl_get_workdir+0x871/0x1130 fs/overlayfs/super.c:1548 ovl_fill_super+0x18c2/0x2a20 fs/overlayfs/super.c:2104 mount_nodev+0x5c/0xf0 fs/super.c:1446 ovl_mount+0x2c/0x40 fs/overlayfs/super.c:2194 legacy_get_tree+0xed/0x190 fs/fs_context.c:611 vfs_get_tree+0x89/0x260 fs/super.c:1530 do_new_mount+0x25a/0xa20 fs/namespace.c:3034 path_mount+0x659/0xff0 fs/namespace.c:3364 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x320/0x390 fs/namespace.c:3562 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 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 Second to last potentially related work creation: kasan_save_stack+0x3a/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd2/0x100 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu_common kernel/rcu/tree.c:3011 [inline] call_rcu+0x10b/0xf80 kernel/rcu/tree.c:3129 destroy_inode fs/inode.c:319 [inline] evict+0x834/0x8d0 fs/inode.c:665 iput_final fs/inode.c:1779 [inline] iput+0x635/0x7c0 fs/inode.c:1805 d_delete_notify include/linux/fsnotify.h:278 [inline] vfs_rmdir+0x33f/0x460 fs/namei.c:4170 do_rmdir+0x261/0x6b0 fs/namei.c:4218 __do_sys_unlinkat fs/namei.c:4398 [inline] __se_sys_unlinkat fs/namei.c:4392 [inline] __x64_sys_unlinkat+0xc7/0xf0 fs/namei.c:4392 x64_sys_call+0x4c0/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:264 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 The buggy address belongs to the object at ffff888135c5c2b0 which belongs to the cache f2fs_inode_cache of size 1424 The buggy address is located 1288 bytes inside of 1424-byte region [ffff888135c5c2b0, ffff888135c5c840) The buggy address belongs to the page: page:ffffea0004d71600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888135c5daf0 pfn:0x135c58 head:ffffea0004d71600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 0000000000000000 0000000100000001 ffff8881081f6900 raw: ffff888135c5daf0 0000000080150003 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 1940, ts 79956604736, free_ts 69105278600 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611 get_page_from_freelist+0x2d3a/0x2dc0 mm/page_alloc.c:4485 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5822 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1937 [inline] new_slab+0xa1/0x4d0 mm/slub.c:2000 ___slab_alloc+0x381/0x810 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 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2817 [inline] f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1459 alloc_inode fs/inode.c:264 [inline] iget_locked+0x16c/0x7e0 fs/inode.c:1318 f2fs_iget+0x55/0x5060 fs/f2fs/inode.c:517 f2fs_fill_super+0x48c9/0x6dc0 fs/f2fs/super.c:4458 mount_bdev+0x2ae/0x3e0 fs/super.c:1400 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4708 legacy_get_tree+0xed/0x190 fs/fs_context.c:611 vfs_get_tree+0x89/0x260 fs/super.c:1530 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1472 [inline] free_pcp_prepare mm/page_alloc.c:1544 [inline] free_unref_page_prepare+0x542/0x550 mm/page_alloc.c:3534 free_unref_page+0xae/0x540 mm/page_alloc.c:3616 free_the_page mm/page_alloc.c:805 [inline] __free_pages+0x6c/0x100 mm/page_alloc.c:5898 __vunmap+0x86d/0xa00 mm/vmalloc.c:2660 __vfree mm/vmalloc.c:2709 [inline] vfree+0x8b/0xc0 mm/vmalloc.c:2740 htable_put+0x26c/0x2a0 net/netfilter/xt_hashlimit.c:432 hashlimit_mt_destroy+0x5c/0x70 net/netfilter/xt_hashlimit.c:977 cleanup_match net/ipv6/netfilter/ip6_tables.c:479 [inline] cleanup_entry+0x156/0x350 net/ipv6/netfilter/ip6_tables.c:663 translate_table+0x1eaa/0x2090 net/ipv6/netfilter/ip6_tables.c:746 do_replace net/ipv6/netfilter/ip6_tables.c:1156 [inline] do_ip6t_set_ctl+0x961/0xd80 net/ipv6/netfilter/ip6_tables.c:1646 nf_setsockopt+0x272/0x2a0 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x283b/0x3600 net/ipv6/ipv6_sockglue.c:1011 rawv6_setsockopt+0x29e/0x660 net/ipv6/raw.c:1089 sock_common_setsockopt+0xa0/0xb0 net/core/sock.c:3469 __sys_setsockopt+0x2e9/0x470 net/socket.c:2202 __do_sys_setsockopt net/socket.c:2213 [inline] __se_sys_setsockopt net/socket.c:2210 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2210 Memory state around the buggy address: ffff888135c5c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888135c5c700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888135c5c780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888135c5c800: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888135c5c880: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs warning (device loop1): ext4_enable_quotas:6479: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop1): mount failed