loop0: detected capacity change from 0 to 1024 ================================================================== BUG: KASAN: use-after-free in hfsplus_release_folio+0x554/0x5f0 fs/hfsplus/inode.c:92 Read of size 4 at addr ffff888029a36038 by task syz-executor327/5071 CPU: 1 PID: 5071 Comm: syz-executor327 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:306 [inline] print_report+0x15e/0x45d mm/kasan/report.c:417 kasan_report+0xbf/0x1f0 mm/kasan/report.c:517 hfsplus_release_folio+0x554/0x5f0 fs/hfsplus/inode.c:92 filemap_release_folio+0x13f/0x1b0 mm/filemap.c:3967 block_invalidate_folio+0x4dc/0x5e0 fs/buffer.c:1526 folio_invalidate mm/truncate.c:159 [inline] truncate_cleanup_folio+0x31a/0x3f0 mm/truncate.c:179 truncate_inode_pages_range+0x238/0xec0 mm/truncate.c:368 hfsplus_evict_inode+0x1a/0xe0 fs/hfsplus/super.c:168 evict+0x2ed/0x6b0 fs/inode.c:664 iput_final fs/inode.c:1747 [inline] iput.part.0+0x59b/0x880 fs/inode.c:1773 iput+0x5c/0x80 fs/inode.c:1763 hfsplus_put_super+0x274/0x3f0 fs/hfsplus/super.c:302 generic_shutdown_super+0x158/0x410 fs/super.c:492 kill_block_super+0x9b/0xf0 fs/super.c:1386 deactivate_locked_super+0x98/0x160 fs/super.c:332 deactivate_super+0xb1/0xd0 fs/super.c:363 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1291 task_work_run+0x16f/0x270 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xaa8/0x2950 kernel/exit.c:867 do_group_exit+0xd4/0x2a0 kernel/exit.c:1010 __do_sys_exit_group kernel/exit.c:1021 [inline] __se_sys_exit_group kernel/exit.c:1019 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1019 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdd98031989 Code: Unable to access opcode bytes at 0x7fdd9803195f. RSP: 002b:00007ffecf5eb6c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fdd980a7330 RCX: 00007fdd98031989 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000000005f2 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdd980a7330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 Allocated by task 5071: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] ____kasan_kmalloc mm/kasan/common.c:330 [inline] __kasan_kmalloc+0xa5/0xb0 mm/kasan/common.c:380 kmalloc include/linux/slab.h:580 [inline] kzalloc include/linux/slab.h:720 [inline] hfsplus_btree_open+0x52/0xcd0 fs/hfsplus/btree.c:142 hfsplus_fill_super+0xae5/0x1a30 fs/hfsplus/super.c:473 mount_bdev+0x351/0x410 fs/super.c:1359 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x2f0 fs/super.c:1489 do_new_mount fs/namespace.c:3145 [inline] path_mount+0x132a/0x1e20 fs/namespace.c:3475 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount fs/namespace.c:3674 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 5071: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:518 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807 slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0xaf/0x3b0 mm/slub.c:3800 hfsplus_btree_close+0x1e5/0x380 fs/hfsplus/btree.c:280 hfsplus_put_super+0x224/0x3f0 fs/hfsplus/super.c:300 generic_shutdown_super+0x158/0x410 fs/super.c:492 kill_block_super+0x9b/0xf0 fs/super.c:1386 deactivate_locked_super+0x98/0x160 fs/super.c:332 deactivate_super+0xb1/0xd0 fs/super.c:363 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1291 task_work_run+0x16f/0x270 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xaa8/0x2950 kernel/exit.c:867 do_group_exit+0xd4/0x2a0 kernel/exit.c:1010 __do_sys_exit_group kernel/exit.c:1021 [inline] __se_sys_exit_group kernel/exit.c:1019 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1019 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888029a36000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 56 bytes inside of 4096-byte region [ffff888029a36000, ffff888029a37000) The buggy address belongs to the physical page: page:ffffea0000a68c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29a30 head:ffffea0000a68c00 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888012042140 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5071, tgid 5071 (syz-executor327), ts 46338673547, free_ts 42741516779 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x119c/0x2ce0 mm/page_alloc.c:4283 __alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5549 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1851 [inline] allocate_slab+0x25f/0x350 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3193 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292 __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x1a4/0x430 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0x4a/0xd0 mm/slab_common.c:981 kmalloc include/linux/slab.h:584 [inline] tomoyo_realpath_from_path+0xc3/0x600 security/tomoyo/realpath.c:251 tomoyo_mount_acl+0x2d1/0x840 security/tomoyo/mount.c:141 tomoyo_mount_permission+0x163/0x410 security/tomoyo/mount.c:237 security_sb_mount+0x6a/0xc0 security/security.c:1007 path_mount+0x133/0x1e20 fs/namespace.c:3417 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount fs/namespace.c:3674 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1446 [inline] free_pcp_prepare+0x65c/0xc00 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x1d/0x490 mm/page_alloc.c:3464 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2637 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x192/0x220 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x66/0x90 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] 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+0x26d/0x760 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:3116 [inline] alloc_inode+0x168/0x230 fs/inode.c:261 new_inode_pseudo+0x17/0x80 fs/inode.c:1018 get_pipe_inode fs/pipe.c:873 [inline] create_pipe_files+0x51/0x890 fs/pipe.c:913 __do_pipe_flags fs/pipe.c:962 [inline] do_pipe2+0x96/0x1b0 fs/pipe.c:1010 __do_sys_pipe fs/pipe.c:1033 [inline] __se_sys_pipe fs/pipe.c:1031 [inline] __x64_sys_pipe+0x33/0x40 fs/pipe.c:1031 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888029a35f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888029a35f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888029a36000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888029a36080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888029a36100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================