loop5: detected capacity change from 0 to 1024 ================================================================== BUG: KASAN: slab-use-after-free in hfsplus_btree_open+0x92b/0xd10 fs/hfsplus/btree.c:155 Read of size 4 at addr ffff88803473d764 by task syz-executor.5/2428 CPU: 1 PID: 2428 Comm: syz-executor.5 Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 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:319 [inline] print_report+0x163/0x540 mm/kasan/report.c:430 kasan_report+0x176/0x1b0 mm/kasan/report.c:536 hfsplus_btree_open+0x92b/0xd10 fs/hfsplus/btree.c:155 hfsplus_fill_super+0xabe/0x1c90 fs/hfsplus/super.c:473 mount_bdev+0x271/0x3a0 fs/super.c:1380 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3042 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f146e08d69a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f146eea4f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000005fa RCX: 00007f146e08d69a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f146eea4fe0 RBP: 00007f146eea5020 R08: 00007f146eea5020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f146eea4fe0 R15: 0000000020000140 Allocated by task 26546: 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:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769 slab_alloc_node mm/slub.c:3452 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc_lru+0x11f/0x2e0 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:2686 [inline] f2fs_alloc_inode+0x167/0x530 fs/f2fs/super.c:1371 alloc_inode fs/inode.c:260 [inline] iget_locked+0x1cc/0x830 fs/inode.c:1287 f2fs_iget+0x56/0x4b30 fs/f2fs/inode.c:504 f2fs_fill_super+0x4ace/0x7cf0 fs/f2fs/super.c:4254 mount_bdev+0x271/0x3a0 fs/super.c:1380 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3042 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 __call_rcu_common kernel/rcu/tree.c:2622 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2736 f2fs_put_super+0x631/0xc80 fs/f2fs/super.c:1600 generic_shutdown_super+0x134/0x340 fs/super.c:500 kill_block_super+0x7e/0xe0 fs/super.c:1407 kill_f2fs_super+0x303/0x3d0 fs/f2fs/super.c:4635 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 __call_rcu_common kernel/rcu/tree.c:2622 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2736 f2fs_put_super+0x631/0xc80 fs/f2fs/super.c:1600 generic_shutdown_super+0x134/0x340 fs/super.c:500 kill_block_super+0x7e/0xe0 fs/super.c:1407 kill_f2fs_super+0x303/0x3d0 fs/f2fs/super.c:4635 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88803473d028 which belongs to the cache f2fs_inode_cache of size 2152 The buggy address is located 1852 bytes inside of freed 2152-byte region [ffff88803473d028, ffff88803473d890) The buggy address belongs to the physical page: page:ffffea0000d1ce00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803473d028 pfn:0x34738 head:ffffea0000d1ce00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888020da1901 ksm flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888145fe7280 ffffea0000d16600 0000000000000003 raw: ffff88803473d028 00000000800e0007 00000001ffffffff ffff888020da1901 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 11666, tgid 11665 (syz-executor.2), ts 421187595902, free_ts 418815034873 prep_new_page mm/page_alloc.c:2553 [inline] get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4326 __alloc_pages+0x255/0x670 mm/page_alloc.c:5592 alloc_slab_page+0x6a/0x160 mm/slub.c:1851 allocate_slab mm/slub.c:1998 [inline] new_slab+0x84/0x2f0 mm/slub.c:2051 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc_lru+0x1b9/0x2e0 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:2686 [inline] f2fs_alloc_inode+0x167/0x530 fs/f2fs/super.c:1371 alloc_inode fs/inode.c:260 [inline] new_inode_pseudo+0x65/0x1d0 fs/inode.c:1019 new_inode+0x29/0x1d0 fs/inode.c:1047 f2fs_new_inode+0x120/0x1090 fs/f2fs/namei.c:217 f2fs_mkdir+0x127/0x530 fs/f2fs/namei.c:756 vfs_mkdir+0x29d/0x450 fs/namei.c:4038 ovl_do_mkdir fs/overlayfs/overlayfs.h:189 [inline] ovl_mkdir_real+0xd3/0x2d0 fs/overlayfs/dir.c:146 ovl_create_real+0x2b6/0x550 fs/overlayfs/dir.c:193 ovl_create_index+0x22c/0x890 fs/overlayfs/copy_up.c:510 ovl_copy_up_workdir fs/overlayfs/copy_up.c:738 [inline] ovl_do_copy_up fs/overlayfs/copy_up.c:879 [inline] ovl_copy_up_one fs/overlayfs/copy_up.c:1049 [inline] ovl_copy_up_flags+0x303c/0x3d60 fs/overlayfs/copy_up.c:1095 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1454 [inline] free_pcp_prepare mm/page_alloc.c:1504 [inline] free_unref_page_prepare+0xe2f/0xe70 mm/page_alloc.c:3388 free_unref_page+0x37/0x3f0 mm/page_alloc.c:3483 qlist_free_all+0x22/0x60 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:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769 slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x14c/0x290 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:966 [inline] __kmalloc+0xa8/0x230 mm/slab_common.c:980 kmalloc include/linux/slab.h:584 [inline] tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x254/0x4e0 security/tomoyo/file.c:771 security_file_open+0x63/0xa0 security/security.c:1719 do_dentry_open+0x308/0x10f0 fs/open.c:907 do_open fs/namei.c:3560 [inline] path_openat+0x27b3/0x3170 fs/namei.c:3715 do_filp_open+0x234/0x490 fs/namei.c:3742 do_sys_openat2+0x13f/0x500 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1375 Memory state around the buggy address: ffff88803473d600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803473d680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88803473d700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88803473d780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803473d800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================