ERROR: (device loop1): release_metapage: write_one_page() failed ERROR: (device loop1): remounting filesystem as read-only ================================================================== BUG: KASAN: use-after-free in drop_metapage fs/jfs/jfs_metapage.c:222 [inline] BUG: KASAN: use-after-free in release_metapage+0x829/0xe00 fs/jfs/jfs_metapage.c:758 Read of size 8 at addr ffff888061c41ad0 by task syz.1.406/6485 CPU: 0 PID: 6485 Comm: syz.1.406 Not tainted 5.15.171-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 drop_metapage fs/jfs/jfs_metapage.c:222 [inline] release_metapage+0x829/0xe00 fs/jfs/jfs_metapage.c:758 write_metapage fs/jfs/jfs_metapage.h:75 [inline] flush_metapage fs/jfs/jfs_metapage.h:81 [inline] ea_write+0x69f/0xe50 fs/jfs/xattr.c:280 ea_put fs/jfs/xattr.c:621 [inline] __jfs_setxattr+0x8a5/0x11d0 fs/jfs/xattr.c:787 __jfs_xattr_set+0xf5/0x180 fs/jfs/xattr.c:936 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x27e/0x2e0 fs/xattr.c:611 path_setxattr+0x1bc/0x2a0 fs/xattr.c:630 __do_sys_lsetxattr fs/xattr.c:653 [inline] __se_sys_lsetxattr fs/xattr.c:649 [inline] __x64_sys_lsetxattr+0xb4/0xd0 fs/xattr.c:649 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb0a7176719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb0a55ac038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007fb0a732e130 RCX: 00007fb0a7176719 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020000040 RBP: 00007fb0a71e9616 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fb0a732e130 R15: 00007ffdbd7d83f8 Allocated by task 6485: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 mempool_alloc+0x17f/0x590 mm/mempool.c:393 alloc_metapage fs/jfs/jfs_metapage.c:175 [inline] __get_metapage+0x672/0x1070 fs/jfs/jfs_metapage.c:652 ea_write+0x633/0xe50 fs/jfs/xattr.c:256 ea_put fs/jfs/xattr.c:621 [inline] __jfs_setxattr+0x8a5/0x11d0 fs/jfs/xattr.c:787 __jfs_xattr_set+0xf5/0x180 fs/jfs/xattr.c:936 __vfs_setxattr+0x3e7/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 vfs_setxattr+0x21d/0x420 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x27e/0x2e0 fs/xattr.c:611 path_setxattr+0x1bc/0x2a0 fs/xattr.c:630 __do_sys_lsetxattr fs/xattr.c:653 [inline] __se_sys_lsetxattr fs/xattr.c:649 [inline] __x64_sys_lsetxattr+0xb4/0xd0 fs/xattr.c:649 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 6484: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x91/0x1f0 mm/slub.c:3515 free_metapage fs/jfs/jfs_metapage.c:190 [inline] metapage_releasepage+0x5cb/0x730 fs/jfs/jfs_metapage.c:552 do_invalidatepage mm/truncate.c:157 [inline] truncate_cleanup_page+0x179/0x440 mm/truncate.c:176 truncate_inode_pages_range+0x2e7/0x1290 mm/truncate.c:325 jfs_remount+0x360/0x6a0 fs/jfs/super.c:456 reconfigure_super+0x43a/0x870 fs/super.c:938 vfs_fsconfig_locked fs/fsopen.c:254 [inline] __do_sys_fsconfig fs/fsopen.c:439 [inline] __se_sys_fsconfig+0x98b/0xec0 fs/fsopen.c:314 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff888061c41aa8 which belongs to the cache jfs_mp of size 184 The buggy address is located 40 bytes inside of 184-byte region [ffff888061c41aa8, ffff888061c41b60) The buggy address belongs to the page: page:ffffea0001871040 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x61c41 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 0000000100000001 ffff888146b67780 raw: 0000000000000000 0000000080100010 00000001ffffffff 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 0x192800(GFP_NOWAIT|__GFP_NOWARN|__GFP_NORETRY|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4716, ts 113152704119, free_ts 113131609587 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5464 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233 mempool_alloc+0x17f/0x590 mm/mempool.c:393 alloc_metapage fs/jfs/jfs_metapage.c:175 [inline] __get_metapage+0x672/0x1070 fs/jfs/jfs_metapage.c:652 diIAGRead fs/jfs/jfs_imap.c:2672 [inline] diRead+0x211/0xbb0 fs/jfs/jfs_imap.c:316 jfs_iget+0x88/0x3b0 fs/jfs/inode.c:35 jfs_fill_super+0x826/0xc70 fs/jfs/super.c:585 mount_bdev+0x2c9/0x3f0 fs/super.c:1400 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x2ba/0xb40 fs/namespace.c:3012 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 do_slab_free mm/slub.c:3487 [inline] ___cache_free+0xe3/0x100 mm/slub.c:3506 qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 shmem_alloc_inode+0x16/0x30 mm/shmem.c:3794 alloc_inode fs/inode.c:236 [inline] new_inode_pseudo+0x60/0x210 fs/inode.c:976 new_inode+0x25/0x1d0 fs/inode.c:1005 shmem_get_inode+0x327/0xad0 mm/shmem.c:2295 shmem_mknod+0x54/0x1b0 mm/shmem.c:2855 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x130a/0x2f20 fs/namei.c:3739 do_filp_open+0x21c/0x460 fs/namei.c:3769 do_sys_openat2+0x13b/0x4f0 fs/open.c:1253 Memory state around the buggy address: ffff888061c41980: fc fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb ffff888061c41a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc >ffff888061c41a80: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb ^ ffff888061c41b00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff888061c41b80: fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================