find_entry called with index = 0 find_entry called with index >= next_index find_entry called with index >= next_index find_entry called with index >= next_index ================================================================== BUG: KASAN: slab-out-of-bounds in dtInsertEntry.isra.0+0x149b/0x15c0 fs/jfs/jfs_dtree.c:3618 Read of size 1 at addr ffff88808a0519b0 by task syz-executor.1/5769 CPU: 0 PID: 5769 Comm: syz-executor.1 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 dtInsertEntry.isra.0+0x149b/0x15c0 fs/jfs/jfs_dtree.c:3618 dtInsert+0x4f0/0xa10 fs/jfs/jfs_dtree.c:886 jfs_create+0x5b7/0xac0 fs/jfs/namei.c:137 lookup_open.isra.0+0xf05/0x12a0 fs/namei.c:3413 open_last_lookups fs/namei.c:3481 [inline] path_openat+0x996/0x28f0 fs/namei.c:3688 do_filp_open+0x1b6/0x400 fs/namei.c:3718 do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_open fs/open.c:1334 [inline] __se_sys_open fs/open.c:1330 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1330 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fed23a8b5a9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fed24bb6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fed23babf80 RCX: 00007fed23a8b5a9 RDX: 0000000000000000 RSI: 0000000000101440 RDI: 0000000020000080 RBP: 00007fed23ae6580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe7e7dc96f R14: 00007fed24bb6300 R15: 0000000000022000 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff88808a051280 which belongs to the cache jfs_ip of size 2240 The buggy address is located 1840 bytes inside of 2240-byte region [ffff88808a051280, ffff88808a051b40) The buggy address belongs to the physical page: page:ffffea0002281400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8a050 head:ffffea0002281400 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff88807aeb0801 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000122 ffff88801ba213c0 raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff88807aeb0801 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 5769, tgid 5768 (syz-executor.1), ts 315057849203, free_ts 314337916683 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5549 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:1829 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x84f/0xe80 mm/slub.c:3036 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123 slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc_lru+0x528/0x720 mm/slub.c:3280 alloc_inode_sb include/linux/fs.h:3107 [inline] jfs_alloc_inode+0x23/0x60 fs/jfs/super.c:105 alloc_inode+0x61/0x230 fs/inode.c:259 new_inode_pseudo fs/inode.c:1018 [inline] new_inode+0x27/0x270 fs/inode.c:1046 jfs_fill_super+0x436/0xc70 fs/jfs/super.c:544 mount_bdev+0x34d/0x410 fs/super.c:1400 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x19/0x4d0 mm/page_alloc.c:3476 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:447 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc+0x267/0x3b0 mm/slub.c:3273 vm_area_dup+0x88/0x3f0 kernel/fork.c:467 __split_vma+0xa5/0x550 mm/mmap.c:2688 split_vma+0x95/0xd0 mm/mmap.c:2746 mprotect_fixup+0x758/0x970 mm/mprotect.c:614 do_mprotect_pkey+0x6c5/0x9e0 mm/mprotect.c:781 __do_sys_mprotect mm/mprotect.c:808 [inline] __se_sys_mprotect mm/mprotect.c:805 [inline] __x64_sys_mprotect+0x74/0xb0 mm/mprotect.c:805 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88808a051880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88808a051900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88808a051980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88808a051a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88808a051a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================