ERROR: (device loop3): release_metapage: write_one_page() failed ERROR: (device loop3): remounting filesystem as read-only ================================================================== BUG: KASAN: use-after-free in drop_metapage fs/jfs/jfs_metapage.c:223 [inline] BUG: KASAN: use-after-free in release_metapage+0x70c/0xc84 fs/jfs/jfs_metapage.c:757 Read of size 8 at addr ffff0000ca096120 by task syz-executor.3/5438 CPU: 0 PID: 5438 Comm: syz-executor.3 Not tainted 6.1.89-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 drop_metapage fs/jfs/jfs_metapage.c:223 [inline] release_metapage+0x70c/0xc84 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+0x50c/0xba0 fs/jfs/xattr.c:280 ea_put fs/jfs/xattr.c:610 [inline] __jfs_setxattr+0xc10/0x1338 fs/jfs/xattr.c:783 __jfs_xattr_set+0xf8/0x190 fs/jfs/xattr.c:917 jfs_xattr_set+0x58/0x70 fs/jfs/xattr.c:941 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x230/0x294 fs/xattr.c:617 path_setxattr+0x17c/0x258 fs/xattr.c:636 __do_sys_setxattr fs/xattr.c:652 [inline] __se_sys_setxattr fs/xattr.c:648 [inline] __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:648 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 5438: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x458 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x230/0x37c mm/slub.c:3422 mempool_alloc_slab+0x58/0x74 mm/mempool.c:512 mempool_alloc+0x150/0x48c mm/mempool.c:392 alloc_metapage fs/jfs/jfs_metapage.c:176 [inline] __get_metapage+0x618/0x1050 fs/jfs/jfs_metapage.c:651 ea_write+0x49c/0xba0 fs/jfs/xattr.c:256 ea_put fs/jfs/xattr.c:610 [inline] __jfs_setxattr+0xc10/0x1338 fs/jfs/xattr.c:783 __jfs_xattr_set+0xf8/0x190 fs/jfs/xattr.c:917 jfs_xattr_set+0x58/0x70 fs/jfs/xattr.c:941 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x230/0x294 fs/xattr.c:617 path_setxattr+0x17c/0x258 fs/xattr.c:636 __do_sys_setxattr fs/xattr.c:652 [inline] __se_sys_setxattr fs/xattr.c:648 [inline] __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:648 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Freed by task 5448: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x2f0/0x588 mm/slub.c:3683 mempool_free_slab+0x28/0x38 mm/mempool.c:519 mempool_free+0xbc/0x2e0 mm/mempool.c:501 free_metapage fs/jfs/jfs_metapage.c:191 [inline] metapage_release_folio+0x448/0x5b4 fs/jfs/jfs_metapage.c:551 metapage_invalidate_folio+0x140/0x1d8 fs/jfs/jfs_metapage.c:563 folio_invalidate mm/truncate.c:158 [inline] truncate_cleanup_folio+0x174/0x2e0 mm/truncate.c:178 truncate_inode_pages_range+0x244/0xf10 mm/truncate.c:368 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451 jfs_remount+0x2dc/0x594 fs/jfs/super.c:451 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:655 reconfigure_super+0x318/0x7a4 fs/super.c:966 vfs_fsconfig_locked fs/fsopen.c:254 [inline] __do_sys_fsconfig fs/fsopen.c:439 [inline] __se_sys_fsconfig fs/fsopen.c:314 [inline] __arm64_sys_fsconfig+0xa1c/0xd18 fs/fsopen.c:314 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000ca0960f8 which belongs to the cache jfs_mp of size 184 The buggy address is located 40 bytes inside of 184-byte region [ffff0000ca0960f8, ffff0000ca0961b0) The buggy address belongs to the physical page: page:000000004e8a40f7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10a096 flags: 0x5ffe00000000200(slab|node=0|zone=2|lastcpupid=0xfff) raw: 05ffe00000000200 0000000000000000 dead000000000001 ffff0000c6ee7c80 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000ca096000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000ca096080: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa >ffff0000ca096100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000ca096180: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb ffff0000ca096200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================