loop9: detected capacity change from 0 to 512 EXT4-fs: Ignoring removed nobh option ================================================================== BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline] BUG: KASAN: use-after-free in __ext4_iget+0x254/0x319c fs/ext4/inode.c:4835 Read of size 8 at addr ffff0000f402b2e0 by task syz.9.572/7644 CPU: 0 PID: 7644 Comm: syz.9.572 Not tainted 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:427 kasan_report+0xd4/0x130 mm/kasan/report.c:531 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 check_igot_inode fs/ext4/inode.c:-1 [inline] __ext4_iget+0x254/0x319c fs/ext4/inode.c:4835 ext4_quota_enable fs/ext4/super.c:6986 [inline] ext4_enable_quotas+0x450/0xb08 fs/ext4/super.c:7022 __ext4_fill_super fs/ext4/super.c:5509 [inline] ext4_fill_super+0x6d48/0x73a4 fs/ext4/super.c:5654 get_tree_bdev+0x360/0x54c fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5684 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x498/0x588 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 7240: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x458 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x1ac/0x2f8 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3245 [inline] f2fs_alloc_inode+0x138/0x4b4 fs/f2fs/super.c:1419 alloc_inode fs/inode.c:261 [inline] new_inode_pseudo+0x68/0x1d0 fs/inode.c:1063 new_inode+0x38/0x174 fs/inode.c:1091 f2fs_new_inode+0xec/0xddc fs/f2fs/namei.c:191 f2fs_mkdir+0x118/0x4ec fs/f2fs/namei.c:691 vfs_mkdir+0x334/0x4e4 fs/namei.c:4106 do_mkdirat+0x220/0x510 fs/namei.c:4131 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2845 destroy_inode fs/inode.c:316 [inline] evict+0x7ac/0x894 fs/inode.c:720 dispose_list fs/inode.c:738 [inline] evict_inodes+0x6dc/0x774 fs/inode.c:792 generic_shutdown_super+0x9c/0x328 fs/super.c:480 kill_block_super+0x70/0xdc fs/super.c:1470 kill_f2fs_super+0x264/0x328 fs/f2fs/super.c:4674 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Second to last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2845 destroy_inode fs/inode.c:316 [inline] evict+0x7ac/0x894 fs/inode.c:720 iput_final fs/inode.c:1834 [inline] iput+0x7c0/0x8a4 fs/inode.c:1860 f2fs_put_super+0x53c/0x9ec fs/f2fs/super.c:1650 generic_shutdown_super+0x130/0x328 fs/super.c:501 kill_block_super+0x70/0xdc fs/super.c:1470 kill_f2fs_super+0x264/0x328 fs/f2fs/super.c:4674 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000f402ac60 which belongs to the cache f2fs_inode_cache of size 2144 The buggy address is located 1664 bytes inside of 2144-byte region [ffff0000f402ac60, ffff0000f402b4c0) The buggy address belongs to the physical page: page:000000006660584d refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000f402a380 pfn:0x134028 head:000000006660584d order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000cb6f2b01 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c6dfd680 raw: ffff0000f402a380 00000000800e000a 00000001ffffffff ffff0000cb6f2b01 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000f402b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000f402b200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000f402b280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000f402b300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000f402b380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== EXT4-fs warning (device loop9): ext4_enable_quotas:7030: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop9): mount failed