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 ffff888037e1aadc by task syz-executor.5/17386 CPU: 0 PID: 17386 Comm: syz-executor.5 Not tainted 6.3.0-rc5-syzkaller-00005-g148341f0a2f5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 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: 0033:0x7f9070e8d62a 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:00007f9071c90f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000005f0 RCX: 00007f9070e8d62a RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007f9071c90fe0 RBP: 00007f9071c91020 R08: 00007f9071c91020 R09: 0000000000200008 R10: 0000000000200008 R11: 0000000000000202 R12: 0000000020000000 R13: 00000000200000c0 R14: 00007f9071c90fe0 R15: 0000000020000180 Allocated by task 11984: 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+0x5f8e/0x7cf0 fs/f2fs/super.c:4356 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+0x5e0/0xc80 fs/f2fs/super.c:1597 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+0x5e0/0xc80 fs/f2fs/super.c:1597 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 ffff888037e1a3a0 which belongs to the cache f2fs_inode_cache of size 2152 The buggy address is located 1852 bytes inside of freed 2152-byte region [ffff888037e1a3a0, ffff888037e1ac08) The buggy address belongs to the physical page: page:ffffea0000df8600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888037e19ab8 pfn:0x37e18 head:ffffea0000df8600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888058dfaa01 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888146218dc0 dead000000000122 0000000000000000 raw: ffff888037e19ab8 00000000800e0001 00000001ffffffff ffff888058dfaa01 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 5673, tgid 5672 (syz-executor.0), ts 217997948631, free_ts 0 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_create+0x197/0x530 fs/f2fs/namei.c:353 vfs_create+0x1e2/0x330 fs/namei.c:3118 ovl_do_create+0x8a/0xd0 fs/overlayfs/overlayfs.h:179 ovl_create_real+0x283/0x550 fs/overlayfs/dir.c:188 ovl_check_rename_whiteout fs/overlayfs/super.c:1194 [inline] ovl_make_workdir fs/overlayfs/super.c:1329 [inline] ovl_get_workdir+0x7f1/0x17c0 fs/overlayfs/super.c:1444 ovl_fill_super+0x1c64/0x2bd0 fs/overlayfs/super.c:2000 page_owner free stack trace missing Memory state around the buggy address: ffff888037e1a980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888037e1aa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888037e1aa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888037e1ab00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888037e1ab80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================