================================================================== BUG: KASAN: use-after-free in drop_metapage fs/jfs/jfs_metapage.c:223 [inline] BUG: KASAN: use-after-free in release_metapage+0xe08/0xf00 fs/jfs/jfs_metapage.c:757 Read of size 8 at addr ffff888000d80310 by task syz-executor.1/5579 CPU: 3 PID: 5579 Comm: syz-executor.1 Not tainted 6.1.0-syzkaller-13409-g2f26e424552e #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 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/0x461 mm/kasan/report.c:417 kasan_report+0xbf/0x1f0 mm/kasan/report.c:517 drop_metapage fs/jfs/jfs_metapage.c:223 [inline] release_metapage+0xe08/0xf00 fs/jfs/jfs_metapage.c:757 write_metapage fs/jfs/jfs_metapage.h:75 [inline] flush_metapage fs/jfs/jfs_metapage.h:81 [inline] ea_write+0x5d6/0xc90 fs/jfs/xattr.c:280 ea_put fs/jfs/xattr.c:610 [inline] __jfs_setxattr+0xead/0xfc0 fs/jfs/xattr.c:783 __jfs_xattr_set+0xc9/0x150 fs/jfs/xattr.c:917 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:202 __vfs_setxattr_noperm+0x129/0x5f0 fs/xattr.c:236 __vfs_setxattr_locked+0x1d3/0x260 fs/xattr.c:297 vfs_setxattr+0x143/0x340 fs/xattr.c:323 do_setxattr+0x151/0x190 fs/xattr.c:608 setxattr+0x146/0x160 fs/xattr.c:631 path_setxattr+0x197/0x1c0 fs/xattr.c:650 __do_sys_setxattr fs/xattr.c:666 [inline] __se_sys_setxattr fs/xattr.c:662 [inline] __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:662 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: 0033:0x7fb50cc8c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fb50d94f168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007fb50cdabf80 RCX: 00007fb50cc8c0d9 RDX: 0000000020000200 RSI: 00000000200000c0 RDI: 0000000020000080 RBP: 00007fb50cce7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000c001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf4c5f19f R14: 00007fb50d94f300 R15: 0000000000022000 Allocated by task 5579: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slab.c:3261 [inline] slab_alloc mm/slab.c:3270 [inline] __kmem_cache_alloc_lru mm/slab.c:3447 [inline] kmem_cache_alloc+0x225/0x460 mm/slab.c:3456 mempool_alloc+0x158/0x360 mm/mempool.c:398 alloc_metapage fs/jfs/jfs_metapage.c:176 [inline] __get_metapage+0x73d/0xf00 fs/jfs/jfs_metapage.c:651 ea_write+0x6d7/0xc90 fs/jfs/xattr.c:256 ea_put fs/jfs/xattr.c:610 [inline] __jfs_setxattr+0xead/0xfc0 fs/jfs/xattr.c:783 __jfs_xattr_set+0xc9/0x150 fs/jfs/xattr.c:917 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:202 __vfs_setxattr_noperm+0x129/0x5f0 fs/xattr.c:236 __vfs_setxattr_locked+0x1d3/0x260 fs/xattr.c:297 vfs_setxattr+0x143/0x340 fs/xattr.c:323 do_setxattr+0x151/0x190 fs/xattr.c:608 setxattr+0x146/0x160 fs/xattr.c:631 path_setxattr+0x197/0x1c0 fs/xattr.c:650 __do_sys_setxattr fs/xattr.c:666 [inline] __se_sys_setxattr fs/xattr.c:662 [inline] __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:662 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 5583: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:518 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x13b/0x1a0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] __cache_free mm/slab.c:3394 [inline] __do_kmem_cache_free mm/slab.c:3580 [inline] kmem_cache_free mm/slab.c:3605 [inline] kmem_cache_free+0x108/0x4c0 mm/slab.c:3598 mempool_free+0xe7/0x3b0 mm/mempool.c:507 free_metapage fs/jfs/jfs_metapage.c:191 [inline] metapage_release_folio+0x2b5/0x3c0 fs/jfs/jfs_metapage.c:551 filemap_release_folio+0x13f/0x1b0 mm/filemap.c:3967 shrink_folio_list+0x1ea9/0x3a60 mm/vmscan.c:2000 shrink_inactive_list mm/vmscan.c:2526 [inline] shrink_list mm/vmscan.c:2767 [inline] shrink_lruvec+0xd0e/0x27a0 mm/vmscan.c:5951 shrink_node_memcgs mm/vmscan.c:6138 [inline] shrink_node+0x8f2/0x1f40 mm/vmscan.c:6169 shrink_zones mm/vmscan.c:6407 [inline] do_try_to_free_pages+0x3b4/0x17a0 mm/vmscan.c:6469 try_to_free_pages+0x2e5/0x960 mm/vmscan.c:6704 __perform_reclaim mm/page_alloc.c:4750 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4772 [inline] __alloc_pages_slowpath.constprop.0+0x8b6/0x23d0 mm/page_alloc.c:5178 __alloc_pages+0x4aa/0x5b0 mm/page_alloc.c:5562 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2285 folio_alloc+0x20/0x70 mm/mempolicy.c:2295 filemap_alloc_folio+0x362/0x450 mm/filemap.c:972 __filemap_get_folio+0x32c/0xd80 mm/filemap.c:1966 pagecache_get_page+0x2e/0x280 mm/folio-compat.c:98 find_or_create_page include/linux/pagemap.h:612 [inline] grow_dev_page fs/buffer.c:946 [inline] grow_buffers fs/buffer.c:1011 [inline] __getblk_slow+0x1f4/0x1030 fs/buffer.c:1038 __getblk_gfp+0x72/0x80 fs/buffer.c:1333 sb_getblk include/linux/buffer_head.h:356 [inline] search_by_key+0x3ac/0x3bf0 fs/reiserfs/stree.c:672 reiserfs_read_locked_inode+0x158/0x2160 fs/reiserfs/inode.c:1549 reiserfs_fill_super+0x1273/0x2e90 fs/reiserfs/super.c:2071 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 The buggy address belongs to the object at ffff888000d802e8 which belongs to the cache jfs_mp of size 184 The buggy address is located 40 bytes inside of 184-byte region [ffff888000d802e8, ffff888000d803a0) The buggy address belongs to the physical page: page:ffffea0000036000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd80 flags: 0x7ff00000000200(slab|node=0|zone=0|lastcpupid=0x7ff) raw: 007ff00000000200 ffff888043795600 ffffea000057a090 ffffea00006b5d90 raw: 0000000000000000 ffff888000d80000 0000000100000010 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2d2000(__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_THISNODE), pid 5532, tgid 5531 (syz-executor.2), ts 318971103348, free_ts 315871259807 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x119c/0x2ce0 mm/page_alloc.c:4283 __alloc_pages_slowpath.constprop.0+0x36b/0x23d0 mm/page_alloc.c:5084 __alloc_pages+0x4aa/0x5b0 mm/page_alloc.c:5562 __alloc_pages_node include/linux/gfp.h:237 [inline] kmem_getpages mm/slab.c:1363 [inline] cache_grow_begin+0x94/0x390 mm/slab.c:2574 cache_alloc_refill+0x27f/0x380 mm/slab.c:2947 ____cache_alloc mm/slab.c:3023 [inline] ____cache_alloc mm/slab.c:3006 [inline] __do_cache_alloc mm/slab.c:3206 [inline] slab_alloc_node mm/slab.c:3254 [inline] slab_alloc mm/slab.c:3270 [inline] __kmem_cache_alloc_lru mm/slab.c:3447 [inline] kmem_cache_alloc+0x366/0x460 mm/slab.c:3456 mempool_alloc+0x158/0x360 mm/mempool.c:398 alloc_metapage fs/jfs/jfs_metapage.c:176 [inline] __get_metapage+0x73d/0xf00 fs/jfs/jfs_metapage.c:651 diReadSpecial+0x191/0x6d0 fs/jfs/jfs_imap.c:443 jfs_mount+0xd1/0x7b0 fs/jfs/jfs_mount.c:87 jfs_fill_super+0x5a8/0xc80 fs/jfs/super.c:556 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 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 __vunmap+0x85d/0xd30 mm/vmalloc.c:2727 free_work+0x5c/0x80 mm/vmalloc.c:100 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Memory state around the buggy address: ffff888000d80200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888000d80280: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb >ffff888000d80300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888000d80380: fb fb fb fb fc fc fc fc fc fc fc fc fb fb fb fb ffff888000d80400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================