================================================================== BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4766 Read of size 8 at addr ffff8881245fd8d8 by task syz.3.1136/5330 CPU: 0 PID: 5330 Comm: syz.3.1136 Not tainted 5.10.226-syzkaller-00709-ge5e5644ea27f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118 print_address_description+0x81/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:452 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4766 ext4_quota_enable fs/ext4/super.c:6423 [inline] ext4_enable_quotas+0x56f/0x9f0 fs/ext4/super.c:6459 ext4_fill_super+0x86dc/0x9150 fs/ext4/super.c:5060 mount_bdev+0x262/0x370 fs/super.c:1440 ext4_mount+0x34/0x40 fs/ext4/super.c:6638 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593 vfs_get_tree+0x88/0x290 fs/super.c:1570 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910 path_mount+0x56f/0xcb0 fs/namespace.c:3240 do_mount fs/namespace.c:3253 [inline] __do_sys_mount fs/namespace.c:3461 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3438 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3438 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fbe6f83c79a 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:00007fbe6e4b3e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fbe6e4b3ef0 RCX: 00007fbe6f83c79a RDX: 00000000200000c0 RSI: 0000000020000040 RDI: 00007fbe6e4b3eb0 RBP: 00000000200000c0 R08: 00007fbe6e4b3ef0 R09: 0000000003000010 R10: 0000000003000010 R11: 0000000000000246 R12: 0000000020000040 R13: 00007fbe6e4b3eb0 R14: 0000000000000513 R15: 0000000020000080 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff8881245fd3b0 which belongs to the cache f2fs_inode_cache of size 1520 The buggy address is located 1320 bytes inside of 1520-byte region [ffff8881245fd3b0, ffff8881245fd9a0) The buggy address belongs to the page: page:ffffea0004917e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8881245f8670 pfn:0x1245f8 head:ffffea0004917e00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head) raw: 4000000000010200 dead000000000100 dead000000000122 ffff888102790600 raw: ffff8881245f8670 0000000080130009 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 1459, ts 146594767616, free_ts 113114550587 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook mm/page_alloc.c:2456 [inline] prep_new_page+0x166/0x180 mm/page_alloc.c:2462 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5348 allocate_slab mm/slub.c:1808 [inline] new_slab+0x80/0x400 mm/slub.c:1869 new_slab_objects mm/slub.c:2627 [inline] ___slab_alloc+0x302/0x4b0 mm/slub.c:2791 __slab_alloc+0x63/0xa0 mm/slub.c:2831 slab_alloc_node mm/slub.c:2913 [inline] slab_alloc mm/slub.c:2955 [inline] kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:2960 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2776 [inline] f2fs_alloc_inode+0x26/0x420 fs/f2fs/super.c:1373 alloc_inode fs/inode.c:233 [inline] iget_locked+0x14f/0x870 fs/inode.c:1271 f2fs_iget+0x55/0x50a0 fs/f2fs/inode.c:498 f2fs_fill_super+0x4c90/0x7e30 fs/f2fs/super.c:4198 mount_bdev+0x262/0x370 fs/super.c:1440 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4553 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593 vfs_get_tree+0x88/0x290 fs/super.c:1570 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910 page last free stack trace: reset_page_owner include/linux/page_owner.h:28 [inline] free_pages_prepare mm/page_alloc.c:1349 [inline] __free_pages_ok+0x82c/0x850 mm/page_alloc.c:1629 free_the_page+0x76/0x370 mm/page_alloc.c:5409 __free_pages+0x67/0xc0 mm/page_alloc.c:5418 __free_slab+0xcf/0x190 mm/slub.c:1894 free_slab mm/slub.c:1909 [inline] discard_slab mm/slub.c:1915 [inline] unfreeze_partials+0x15e/0x190 mm/slub.c:2410 put_cpu_partial+0xbf/0x180 mm/slub.c:2446 __slab_free+0x2c8/0x3a0 mm/slub.c:3095 do_slab_free mm/slub.c:3191 [inline] ___cache_free+0x111/0x130 mm/slub.c:3210 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157 qlist_free_all+0x47/0xb0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x15a/0x170 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:440 kasan_slab_alloc include/linux/kasan.h:244 [inline] slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583 slab_alloc_node mm/slub.c:2947 [inline] slab_alloc mm/slub.c:2955 [inline] kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960 kmem_cache_alloc_node include/linux/slab.h:423 [inline] __alloc_skb+0x80/0x510 net/core/skbuff.c:200 alloc_skb include/linux/skbuff.h:1126 [inline] nlmsg_new include/net/netlink.h:953 [inline] inet_netconf_notify_devconf+0x173/0x220 net/ipv4/devinet.c:2107 Memory state around the buggy address: ffff8881245fd780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881245fd800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8881245fd880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881245fd900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881245fd980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== EXT4-fs warning (device loop3): ext4_enable_quotas:6467: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop3): mount failed