EXT4-fs: Ignoring removed nomblk_io_submit option ================================================================== BUG: KASAN: slab-use-after-free in __ext4_iget+0x2f5/0x3f00 fs/ext4/inode.c:4716 Read of size 8 at addr ffff8880372ebad0 by task syz-executor.3/13956 CPU: 0 PID: 13956 Comm: syz-executor.3 Not tainted 6.7.0-rc6-syzkaller-00022-g55cb5f43689d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x142/0x170 mm/kasan/report.c:588 __ext4_iget+0x2f5/0x3f00 fs/ext4/inode.c:4716 __ext4_fill_super fs/ext4/super.c:5482 [inline] ext4_fill_super+0x55fa/0x6d90 fs/ext4/super.c:5712 get_tree_bdev+0x416/0x5b0 fs/super.c:1598 vfs_get_tree+0x8c/0x2a0 fs/super.c:1771 do_new_mount+0x28f/0xae0 fs/namespace.c:3337 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f2487c7e2ea 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:00007f24889d4ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f24889d4f80 RCX: 00007f2487c7e2ea RDX: 0000000020000040 RSI: 0000000020000200 RDI: 00007f24889d4f40 RBP: 0000000020000040 R08: 00007f24889d4f80 R09: 0000000000200000 R10: 0000000000200000 R11: 0000000000000202 R12: 0000000020000200 R13: 00007f24889d4f40 R14: 0000000000000565 R15: 0000000020000340 Allocated by task 6593: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6c/0x3c0 mm/slab.h:763 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+0x108/0x240 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2937 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:261 [inline] new_inode_pseudo+0x65/0x1d0 fs/inode.c:1006 new_inode+0x22/0x1d0 fs/inode.c:1032 reiserfs_mkdir+0x1c0/0x8f0 fs/reiserfs/namei.c:813 vfs_mkdir+0x2f1/0x4b0 fs/namei.c:4106 do_mkdirat+0x264/0x3a0 fs/namei.c:4129 __do_sys_mkdir fs/namei.c:4149 [inline] __se_sys_mkdir fs/namei.c:4147 [inline] __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4147 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492 __call_rcu_common kernel/rcu/tree.c:2681 [inline] call_rcu+0x167/0xa80 kernel/rcu/tree.c:2795 dispose_list fs/inode.c:699 [inline] evict_inodes+0x5f8/0x690 fs/inode.c:749 generic_shutdown_super+0x9d/0x2c0 fs/super.c:675 kill_block_super+0x44/0x90 fs/super.c:1667 deactivate_locked_super+0xc1/0x130 fs/super.c:484 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256 task_work_run+0x24a/0x300 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x150 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x69/0x2a0 kernel/entry/common.c:296 do_syscall_64+0x52/0x110 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x63/0x6b The buggy address belongs to the object at ffff8880372eb500 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1488 bytes inside of freed 1568-byte region [ffff8880372eb500, ffff8880372ebb20) The buggy address belongs to the physical page: page:ffffea0000dcba00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880372e8000 pfn:0x372e8 head:ffffea0000dcba00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888026e85401 flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff8881426dcdc0 dead000000000122 0000000000000000 raw: ffff8880372e8000 000000008013000d 00000001ffffffff ffff888026e85401 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 6463, tgid 6461 (syz-executor.4), ts 215685372587, free_ts 215409244490 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3312 __alloc_pages+0x255/0x680 mm/page_alloc.c:4568 alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133 alloc_slab_page+0x6a/0x170 mm/slub.c:1870 allocate_slab mm/slub.c:2017 [inline] new_slab+0x84/0x2f0 mm/slub.c:2070 ___slab_alloc+0xc8a/0x1330 mm/slub.c:3223 __slab_alloc mm/slub.c:3322 [inline] __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+0x18e/0x240 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2937 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:261 [inline] iget5_locked+0xa0/0x270 fs/inode.c:1271 reiserfs_fill_super+0x12e4/0x2620 fs/reiserfs/super.c:2053 mount_bdev+0x237/0x300 fs/super.c:1650 legacy_get_tree+0xef/0x190 fs/fs_context.c:662 vfs_get_tree+0x8c/0x2a0 fs/super.c:1771 do_new_mount+0x28f/0xae0 fs/namespace.c:3337 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x931/0xa60 mm/page_alloc.c:2347 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487 __slab_free+0x2f6/0x390 mm/slub.c:3715 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6c/0x3c0 mm/slab.h:763 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+0x19e/0x2b0 mm/slub.c:3502 kmem_cache_zalloc include/linux/slab.h:711 [inline] jbd2_alloc_handle include/linux/jbd2.h:1595 [inline] new_handle fs/jbd2/transaction.c:476 [inline] jbd2__journal_start+0x148/0x5d0 fs/jbd2/transaction.c:503 __ext4_journal_start_sb+0x215/0x5b0 fs/ext4/ext4_jbd2.c:112 __ext4_new_inode+0x12cb/0x4360 fs/ext4/ialloc.c:1078 ext4_symlink+0x38d/0xb40 fs/ext4/namei.c:3398 vfs_symlink+0x12f/0x2a0 fs/namei.c:4464 do_symlinkat+0x222/0x3a0 fs/namei.c:4490 __do_sys_symlinkat fs/namei.c:4506 [inline] __se_sys_symlinkat fs/namei.c:4503 [inline] __x64_sys_symlinkat+0x99/0xb0 fs/namei.c:4503 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 Memory state around the buggy address: ffff8880372eb980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880372eba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880372eba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880372ebb00: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ffff8880372ebb80: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================