loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): feature flags set on rev 0 fs, running e2fsck is recommended ================================================================== BUG: KASAN: use-after-free in __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4683 Read of size 8 at addr ffff8881290bf838 by task syz.1.1165/4487 CPU: 0 PID: 4487 Comm: syz.1.1165 Not tainted 5.15.170-syzkaller-00230-g1f9202a6d83b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1c0 lib/dump_stack.c:106 print_address_description+0x87/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:444 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4683 ext4_quota_enable fs/ext4/super.c:6379 [inline] ext4_enable_quotas+0x556/0x980 fs/ext4/super.c:6415 ext4_fill_super+0x8b95/0x96e0 fs/ext4/super.c:4951 mount_bdev+0x282/0x3b0 fs/super.c:1400 ext4_mount+0x34/0x40 fs/ext4/super.c:6594 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1530 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012 path_mount+0x671/0x1070 fs/namespace.c:3342 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ff109e126ba Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff108487e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff108487f10 RCX: 00007ff109e126ba RDX: 0000000020000100 RSI: 0000000020000500 RDI: 00007ff108487ed0 RBP: 0000000020000100 R08: 00007ff108487f10 R09: 0000000002008002 R10: 0000000002008002 R11: 0000000000000246 R12: 0000000020000500 R13: 00007ff108487ed0 R14: 000000000000054e R15: 0000000020000080 Allocated by task 1187: 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+0xb1/0xe0 mm/kasan/common.c:466 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550 slab_alloc_node mm/slub.c:3240 [inline] slab_alloc mm/slub.c:3248 [inline] kmem_cache_alloc+0xf5/0x200 mm/slub.c:3253 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2801 [inline] f2fs_alloc_inode+0x26/0x340 fs/f2fs/super.c:1406 alloc_inode fs/inode.c:236 [inline] iget_locked+0x174/0x860 fs/inode.c:1283 f2fs_iget+0x55/0x4fe0 fs/f2fs/inode.c:512 f2fs_fill_super+0x4f0f/0x8190 fs/f2fs/super.c:4263 mount_bdev+0x282/0x3b0 fs/super.c:1400 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4623 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1530 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012 path_mount+0x671/0x1070 fs/namespace.c:3342 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu_common kernel/rcu/tree.c:3007 [inline] call_rcu+0x123/0x10b0 kernel/rcu/tree.c:3125 destroy_inode fs/inode.c:291 [inline] evict+0x87d/0x930 fs/inode.c:637 iput_final fs/inode.c:1744 [inline] iput+0x63b/0x7e0 fs/inode.c:1770 f2fs_fill_super+0x6b2a/0x8190 fs/f2fs/super.c:4577 mount_bdev+0x282/0x3b0 fs/super.c:1400 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4623 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1530 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012 path_mount+0x671/0x1070 fs/namespace.c:3342 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff8881290bf330 which belongs to the cache f2fs_inode_cache of size 1424 The buggy address is located 1288 bytes inside of 1424-byte region [ffff8881290bf330, ffff8881290bf8c0) The buggy address belongs to the page: page:ffffea0004a42e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8881290be710 pfn:0x1290b8 head:ffffea0004a42e00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 0000000000000000 0000000100000001 ffff888107fb3980 raw: ffff8881290be710 0000000080150002 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 321, ts 24107814189, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605 prep_new_page+0x1b/0x110 mm/page_alloc.c:2611 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5779 allocate_slab mm/slub.c:1932 [inline] new_slab+0x9a/0x4e0 mm/slub.c:1995 ___slab_alloc+0x39e/0x830 mm/slub.c:3028 __slab_alloc+0x4a/0x90 mm/slub.c:3115 slab_alloc_node mm/slub.c:3206 [inline] slab_alloc mm/slub.c:3248 [inline] kmem_cache_alloc+0x134/0x200 mm/slub.c:3253 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2801 [inline] f2fs_alloc_inode+0x26/0x340 fs/f2fs/super.c:1406 alloc_inode fs/inode.c:236 [inline] iget_locked+0x174/0x860 fs/inode.c:1283 f2fs_iget+0x55/0x4fe0 fs/f2fs/inode.c:512 f2fs_fill_super+0x4f0f/0x8190 fs/f2fs/super.c:4263 mount_bdev+0x282/0x3b0 fs/super.c:1400 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4623 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1530 page_owner free stack trace missing Memory state around the buggy address: ffff8881290bf700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881290bf780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881290bf800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881290bf880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8881290bf900: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs warning (device loop1): ext4_enable_quotas:6423: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop1): mount failed