EXT4-fs (loop2): orphan cleanup on readonly fs ================================================================== BUG: KASAN: use-after-free in __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4641 Read of size 8 at addr ffff88812c510938 by task syz-executor.2/5413 CPU: 1 PID: 5413 Comm: syz-executor.2 Not tainted 5.15.137-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description+0x87/0x3a0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x177/0x1c0 mm/kasan/report.c:451 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4641 ext4_quota_enable fs/ext4/super.c:6367 [inline] ext4_enable_quotas+0x556/0x980 fs/ext4/super.c:6403 ext4_orphan_cleanup+0x41f/0x1060 fs/ext4/orphan.c:432 ext4_fill_super+0x8dc8/0x96e0 fs/ext4/super.c:4966 mount_bdev+0x282/0x3b0 fs/super.c:1387 ext4_mount+0x34/0x40 fs/ext4/super.c:6582 legacy_get_tree+0xee/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1517 do_new_mount+0x28b/0xad0 fs/namespace.c:2994 path_mount+0x671/0x1070 fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3522 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f8776a2e1ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f87765aeee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f87765aef80 RCX: 00007f8776a2e1ea RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007f87765aef40 RBP: 0000000020000040 R08: 00007f87765aef80 R09: 0000000002000007 R10: 0000000002000007 R11: 0000000000000246 R12: 0000000020000500 R13: 00007f87765aef40 R14: 00000000000004c7 R15: 00000000200000c0 Allocated by task 5090: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf5/0x200 mm/slub.c:3233 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2644 [inline] f2fs_alloc_inode+0x26/0x380 fs/f2fs/super.c:1350 alloc_inode fs/inode.c:236 [inline] iget_locked+0x174/0x860 fs/inode.c:1244 f2fs_iget+0x55/0x4a20 fs/f2fs/inode.c:489 f2fs_fill_super+0x62be/0x8100 fs/f2fs/super.c:4222 mount_bdev+0x282/0x3b0 fs/super.c:1387 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4469 legacy_get_tree+0xee/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1517 do_new_mount+0x28b/0xad0 fs/namespace.c:2994 path_mount+0x671/0x1070 fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3522 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Freed by task 14: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:366 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x116/0x2e0 mm/slub.c:3515 f2fs_free_inode+0x24/0x30 fs/f2fs/super.c:1501 i_callback+0x4b/0x70 fs/inode.c:225 rcu_do_batch+0x577/0xc10 kernel/rcu/tree.c:2510 rcu_core+0x514/0x1020 kernel/rcu/tree.c:2750 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2763 __do_softirq+0x243/0x595 kernel/softirq.c:558 Last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xca/0xf0 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2994 [inline] call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3074 destroy_inode fs/inode.c:291 [inline] evict+0x5df/0x630 fs/inode.c:602 iput_final fs/inode.c:1705 [inline] iput+0x63b/0x7e0 fs/inode.c:1731 f2fs_fill_super+0x66c2/0x8100 fs/f2fs/super.c:4405 mount_bdev+0x282/0x3b0 fs/super.c:1387 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4469 legacy_get_tree+0xee/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1517 do_new_mount+0x28b/0xad0 fs/namespace.c:2994 path_mount+0x671/0x1070 fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3522 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Second to last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xca/0xf0 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2994 [inline] call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3074 destroy_inode fs/inode.c:291 [inline] evict+0x5df/0x630 fs/inode.c:602 iput_final fs/inode.c:1705 [inline] iput+0x63b/0x7e0 fs/inode.c:1731 f2fs_put_super+0x62f/0xbf0 fs/f2fs/super.c:1585 generic_shutdown_super+0x157/0x2e0 fs/super.c:475 kill_block_super+0x7e/0xe0 fs/super.c:1414 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4501 deactivate_locked_super+0xad/0x110 fs/super.c:335 deactivate_super+0xbe/0xf0 fs/super.c:366 cleanup_mnt+0x45c/0x510 fs/namespace.c:1143 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150 task_work_run+0x129/0x190 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:175 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff88812c510500 which belongs to the cache f2fs_inode_cache of size 1152 The buggy address is located 1080 bytes inside of 1152-byte region [ffff88812c510500, ffff88812c510980) The buggy address belongs to the page: page:ffffea0004b14400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12c510 head:ffffea0004b14400 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 dead000000000100 dead000000000122 ffff8881025c68c0 raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 3408, ts 128303329885, free_ts 128302025105 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x15d/0x170 mm/page_alloc.c:2420 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x33e6/0x34c0 mm/page_alloc.c:4159 __alloc_pages+0x38a/0x7b0 mm/page_alloc.c:5421 allocate_slab mm/slub.c:1912 [inline] new_slab+0x92/0x490 mm/slub.c:1975 ___slab_alloc+0x39e/0x830 mm/slub.c:3008 __slab_alloc+0x4a/0x90 mm/slub.c:3095 slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x134/0x200 mm/slub.c:3233 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2644 [inline] f2fs_alloc_inode+0x26/0x380 fs/f2fs/super.c:1350 alloc_inode fs/inode.c:236 [inline] iget_locked+0x174/0x860 fs/inode.c:1244 f2fs_iget+0x55/0x4a20 fs/f2fs/inode.c:489 f2fs_fill_super+0x4bd4/0x8100 fs/f2fs/super.c:4114 mount_bdev+0x282/0x3b0 fs/super.c:1387 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4469 legacy_get_tree+0xee/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1517 do_new_mount+0x28b/0xad0 fs/namespace.c:2994 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1413 [inline] free_unref_page_prepare+0x7a9/0x7e0 mm/page_alloc.c:3317 free_unref_page+0x85/0x220 mm/page_alloc.c:3396 free_the_page mm/page_alloc.c:705 [inline] __free_pages+0x61/0xf0 mm/page_alloc.c:5497 __free_slab+0xec/0x1d0 mm/slub.c:2000 free_slab mm/slub.c:2015 [inline] discard_slab+0x29/0x40 mm/slub.c:2021 __slab_free+0x205/0x290 mm/slub.c:3404 do_slab_free mm/slub.c:3487 [inline] ___cache_free+0x109/0x120 mm/slub.c:3506 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157 qlist_free_all+0x44/0xb0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc_trace+0xf9/0x210 mm/slub.c:3245 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] alloc_super+0x5d/0x7d0 fs/super.c:203 sget+0x1e5/0x4c0 fs/super.c:624 mount_bdev+0xea/0x3b0 fs/super.c:1360 Memory state around the buggy address: ffff88812c510800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88812c510880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88812c510900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88812c510980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88812c510a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs warning (device loop2): ext4_enable_quotas:6411: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop2): Cannot turn on quotas: error -13 EXT4-fs error (device loop2): ext4_validate_block_bitmap:438: comm syz-executor.2: bg 0: block 64: padding at end of block bitmap is not set EXT4-fs error (device loop2) in ext4_mb_clear_bb:6153: Corrupt filesystem EXT4-fs (loop2): 1 orphan inode deleted EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback.