loop3: detected capacity change from 0 to 512 ================================================================== BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x2ee/0x3f00 fs/ext4/inode.c:4672 Read of size 8 at addr ffff88815a6e6608 by task syz-executor.3/14813 CPU: 0 PID: 14813 Comm: syz-executor.3 Not tainted 5.15.138-syzkaller-00281-g0e7c7966689d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description+0x87/0x3b0 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/0x3f00 fs/ext4/inode.c:4672 ext4_quota_enable fs/ext4/super.c:6366 [inline] ext4_enable_quotas+0x556/0x980 fs/ext4/super.c:6402 ext4_fill_super+0x8b95/0x96e0 fs/ext4/super.c:4950 mount_bdev+0x282/0x3b0 fs/super.c:1387 ext4_mount+0x34/0x40 fs/ext4/super.c:6581 legacy_get_tree+0xf1/0x190 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: 0033:0x7fd1f066f1ea 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:00007fd1ef3efee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fd1ef3eff80 RCX: 00007fd1f066f1ea RDX: 00000000200004c0 RSI: 00000000200000c0 RDI: 00007fd1ef3eff40 RBP: 00000000200004c0 R08: 00007fd1ef3eff80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200000c0 R13: 00007fd1ef3eff40 R14: 00000000000004a6 R15: 0000000020000240 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff88815a6e6100 which belongs to the cache f2fs_inode_cache of size 1424 The buggy address is located 1288 bytes inside of 1424-byte region [ffff88815a6e6100, ffff88815a6e6690) The buggy address belongs to the page: page:ffffea000569b800 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88815a6e1e50 pfn:0x15a6e0 head:ffffea000569b800 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 0000000000000000 dead000000000122 ffff888104bb1b00 raw: ffff88815a6e1e50 0000000080150014 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 2801, ts 195827601230, free_ts 192820218296 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2604 prep_new_page+0x1b/0x110 mm/page_alloc.c:2610 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4484 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5776 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:2795 [inline] f2fs_alloc_inode+0x26/0x340 fs/f2fs/super.c:1373 alloc_inode fs/inode.c:236 [inline] iget_locked+0x174/0x860 fs/inode.c:1244 f2fs_iget+0x55/0x4de0 fs/f2fs/inode.c:489 f2fs_fill_super+0x4eed/0x80e0 fs/f2fs/super.c:4190 mount_bdev+0x282/0x3b0 fs/super.c:1387 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4545 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611 vfs_get_tree+0x88/0x290 fs/super.c:1517 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1471 [inline] free_pcp_prepare mm/page_alloc.c:1543 [inline] free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3533 free_unref_page+0xe8/0x750 mm/page_alloc.c:3615 free_the_page mm/page_alloc.c:804 [inline] __free_pages+0x61/0xf0 mm/page_alloc.c:5852 __free_slab+0xec/0x1d0 mm/slub.c:2020 free_slab mm/slub.c:2035 [inline] discard_slab+0x29/0x40 mm/slub.c:2041 __slab_free+0x205/0x290 mm/slub.c:3424 do_slab_free mm/slub.c:3507 [inline] ___cache_free+0x109/0x120 mm/slub.c:3526 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:443 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_trace+0xf9/0x210 mm/slub.c:3265 kmalloc include/linux/slab.h:603 [inline] usb_control_msg+0xb7/0x4c0 drivers/usb/core/message.c:143 get_port_status drivers/usb/core/hub.c:592 [inline] hub_ext_port_status+0xfe/0x6b0 drivers/usb/core/hub.c:609 hub_port_status drivers/usb/core/hub.c:631 [inline] hub_port_debounce+0x2e8/0x470 drivers/usb/core/hub.c:4625 Memory state around the buggy address: ffff88815a6e6500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88815a6e6580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88815a6e6600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88815a6e6680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88815a6e6700: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs warning (device loop3): ext4_enable_quotas:6410: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop3): mount failed