read_mapping_page failed! ERROR: (device loop2): txAbort: read_mapping_page failed! ERROR: (device loop2): txAbort: ================================================================== BUG: KASAN: slab-out-of-bounds in dtInsertEntry+0xc78/0x1170 fs/jfs/jfs_dtree.c:3753 Read of size 4 at addr ffff0000e170c04c by task syz.2.44/4561 CPU: 0 PID: 4561 Comm: syz.2.44 Not tainted 6.1.134-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 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:316 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:427 kasan_report+0xd4/0x130 mm/kasan/report.c:531 __asan_report_load4_noabort+0x2c/0x38 mm/kasan/report_generic.c:350 dtInsertEntry+0xc78/0x1170 fs/jfs/jfs_dtree.c:3753 dtSplitPage+0x22c8/0x3088 fs/jfs/jfs_dtree.c:1596 dtSplitUp fs/jfs/jfs_dtree.c:1092 [inline] dtInsert+0x110c/0x57a4 fs/jfs/jfs_dtree.c:871 jfs_mkdir+0x6bc/0xa0c fs/jfs/namei.c:270 vfs_mkdir+0x334/0x4e4 fs/namei.c:4106 do_mkdirat+0x220/0x510 fs/namei.c:4131 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 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 4561: 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_lru+0x1ac/0x2f8 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3245 [inline] jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105 alloc_inode fs/inode.c:261 [inline] iget_locked+0x170/0x708 fs/inode.c:1373 jfs_iget+0x30/0x364 fs/jfs/inode.c:29 jfs_lookup+0x1e8/0x39c fs/jfs/namei.c:1467 __lookup_slow+0x250/0x374 fs/namei.c:1690 lookup_slow+0x60/0x84 fs/namei.c:1707 walk_component fs/namei.c:1998 [inline] link_path_walk+0x830/0xcc8 fs/namei.c:2325 path_parentat fs/namei.c:2526 [inline] __filename_parentat+0x1e4/0x5d0 fs/namei.c:2550 filename_parentat fs/namei.c:2568 [inline] do_renameat2+0x2f4/0xe64 fs/namei.c:4943 __do_sys_renameat2 fs/namei.c:5060 [inline] __se_sys_renameat2 fs/namei.c:5057 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5057 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 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 ffff0000e170b780 which belongs to the cache jfs_ip of size 2240 The buggy address is located 12 bytes to the right of 2240-byte region [ffff0000e170b780, ffff0000e170c040) The buggy address belongs to the physical page: page:00000000926e3a32 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121708 head:00000000926e3a32 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000cbe87a01 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c740a300 raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff0000cbe87a01 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e170bf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000e170bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000e170c000: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ^ ffff0000e170c080: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff0000e170c100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== find_entry called with index >= next_index read_mapping_page failed! ERROR: (device loop2): txAbort: