loop2: detected capacity change from 0 to 512 ================================================================== BUG: KASAN: slab-out-of-bounds in check_igot_inode+0x187/0x1b0 fs/ext4/inode.c:4656 Read of size 8 at addr ffff888087ad7ff0 by task syz-executor.2/12109 CPU: 0 PID: 12109 Comm: syz-executor.2 Not tainted 6.5.0-next-20230908-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 check_igot_inode+0x187/0x1b0 fs/ext4/inode.c:4656 __ext4_iget+0x14fb/0x4300 fs/ext4/inode.c:4708 ext4_quota_enable fs/ext4/super.c:7038 [inline] ext4_enable_quotas+0x521/0xba0 fs/ext4/super.c:7074 __ext4_fill_super fs/ext4/super.c:5568 [inline] ext4_fill_super+0x9ad2/0xad40 fs/ext4/super.c:5703 get_tree_bdev+0x3b5/0x650 fs/super.c:1577 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f92eea7e1ea 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:00007f92ef75aee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f92ef75af80 RCX: 00007f92eea7e1ea RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007f92ef75af40 RBP: 0000000020000040 R08: 00007f92ef75af80 R09: 0000000002000000 R10: 0000000002000000 R11: 0000000000000202 R12: 0000000020000500 R13: 00007f92ef75af40 R14: 00000000000004c7 R15: 00000000200000c0 Allocated by task 5081: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x21a/0x630 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2909 [inline] ext4_alloc_inode+0x28/0x650 fs/ext4/super.c:1400 alloc_inode+0x5d/0x220 fs/inode.c:259 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 __ext4_new_inode+0x378/0x5620 fs/ext4/ialloc.c:958 ext4_mkdir+0x284/0xb70 fs/ext4/namei.c:3013 vfs_mkdir+0x532/0x7e0 fs/namei.c:4120 do_mkdirat+0x2a9/0x330 fs/namei.c:4143 __do_sys_mkdirat fs/namei.c:4158 [inline] __se_sys_mkdirat fs/namei.c:4156 [inline] __x64_sys_mkdirat+0x115/0x170 fs/namei.c:4156 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 5081: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] kmem_cache_free+0xf0/0x480 mm/slub.c:3831 i_callback+0x43/0x70 fs/inode.c:248 rcu_do_batch kernel/rcu/tree.c:2139 [inline] rcu_core+0x7fb/0x1bb0 kernel/rcu/tree.c:2403 __do_softirq+0x218/0x965 kernel/softirq.c:553 Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1775 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1801 iput+0x5c/0x80 fs/inode.c:1791 d_delete_notify include/linux/fsnotify.h:263 [inline] vfs_rmdir fs/namei.c:4216 [inline] vfs_rmdir+0x454/0x650 fs/namei.c:4180 do_rmdir+0x344/0x400 fs/namei.c:4262 __do_sys_unlinkat fs/namei.c:4440 [inline] __se_sys_unlinkat fs/namei.c:4434 [inline] __x64_sys_unlinkat+0xef/0x130 fs/namei.c:4434 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1775 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1801 iput+0x5c/0x80 fs/inode.c:1791 do_unlinkat+0x429/0x6d0 fs/namei.c:4405 __do_sys_unlink fs/namei.c:4446 [inline] __se_sys_unlink fs/namei.c:4444 [inline] __x64_sys_unlink+0xc8/0x110 fs/namei.c:4444 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888087ad6e00 which belongs to the cache ext4_inode_cache of size 2432 The buggy address is located 2160 bytes to the right of allocated 2432-byte region [ffff888087ad6e00, ffff888087ad7780) The buggy address belongs to the physical page: page:ffffea00021eb400 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888087ad0a00 pfn:0x87ad0 head:ffffea00021eb400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff8880142b8281 flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888014bcbb40 ffffea00020e3a10 ffffea00023aca10 raw: ffff888087ad0a00 00000000000c000a 00000001ffffffff ffff8880142b8281 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 5635, tgid 5635 (syz-executor.4), ts 328856213696, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1530 prep_new_page mm/page_alloc.c:1537 [inline] get_page_from_freelist+0xf17/0x2e50 mm/page_alloc.c:3200 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4456 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2298 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab+0x251/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8be/0x1570 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x4e4/0x630 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2909 [inline] ext4_alloc_inode+0x28/0x650 fs/ext4/super.c:1400 alloc_inode+0x5d/0x220 fs/inode.c:259 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 __ext4_new_inode+0x378/0x5620 fs/ext4/ialloc.c:958 ext4_symlink+0x5d7/0xa20 fs/ext4/namei.c:3395 vfs_symlink fs/namei.c:4480 [inline] vfs_symlink+0x3e5/0x620 fs/namei.c:4464 do_symlinkat+0x28e/0x310 fs/namei.c:4506 __do_sys_symlinkat fs/namei.c:4522 [inline] __se_sys_symlinkat fs/namei.c:4519 [inline] __x64_sys_symlinkat+0x97/0xc0 fs/namei.c:4519 page_owner free stack trace missing Memory state around the buggy address: ffff888087ad7e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888087ad7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888087ad7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888087ad8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888087ad8080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================