ffff8880701a2d90: 00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 ................ ffff8880701a2da0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ffff8880701a2db0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ================================================================== BUG: KASAN: slab-out-of-bounds in hex_dump_to_buffer+0x72d/0xba0 lib/hexdump.c:193 Read of size 1 at addr ffff8880701a2dc0 by task syz-executor.0/3905 CPU: 0 PID: 3905 Comm: syz-executor.0 Not tainted 5.15.173-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 hex_dump_to_buffer+0x72d/0xba0 lib/hexdump.c:193 print_hex_dump+0x13b/0x250 lib/hexdump.c:276 ea_get+0xd02/0x12b0 fs/jfs/xattr.c:565 jfs_listxattr+0xe1/0x980 fs/jfs/xattr.c:879 vfs_listxattr fs/xattr.c:448 [inline] listxattr+0x282/0x2e0 fs/xattr.c:783 path_listxattr fs/xattr.c:807 [inline] __do_sys_listxattr fs/xattr.c:819 [inline] __se_sys_listxattr fs/xattr.c:816 [inline] __x64_sys_listxattr+0x172/0x230 fs/xattr.c:816 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: 0033:0x7fbff4fd9b29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbff435b0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000c2 RAX: ffffffffffffffda RBX: 00007fbff50f8f80 RCX: 00007fbff4fd9b29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007fbff502547a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fbff50f8f80 R15: 00007fffccaa8498 Allocated by task 3905: 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 jfs_alloc_inode+0x17/0x50 fs/jfs/super.c:105 alloc_inode fs/inode.c:236 [inline] iget_locked+0x194/0x7f0 fs/inode.c:1283 jfs_iget+0x1e/0x3b0 fs/jfs/inode.c:29 jfs_lookup+0x222/0x400 fs/jfs/namei.c:1467 __lookup_slow+0x275/0x3d0 fs/namei.c:1663 lookup_slow+0x53/0x70 fs/namei.c:1680 walk_component+0x48c/0x610 fs/namei.c:1976 lookup_last fs/namei.c:2431 [inline] path_lookupat+0x16f/0x450 fs/namei.c:2455 filename_lookup+0x230/0x5c0 fs/namei.c:2484 user_path_at_empty+0x40/0x180 fs/namei.c:2883 user_path_at include/linux/namei.h:57 [inline] path_listxattr fs/xattr.c:804 [inline] __do_sys_listxattr fs/xattr.c:819 [inline] __se_sys_listxattr fs/xattr.c:816 [inline] __x64_sys_listxattr+0x108/0x230 fs/xattr.c:816 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 ffff8880701a2500 which belongs to the cache jfs_ip of size 2240 The buggy address is located 0 bytes to the right of 2240-byte region [ffff8880701a2500, ffff8880701a2dc0) The buggy address belongs to the page: page:ffffea0001c06800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x701a0 head:ffffea0001c06800 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff88801afb3001 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888146a30140 raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff88801afb3001 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 3905, ts 77319824897, free_ts 76278076042 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 jfs_alloc_inode+0x17/0x50 fs/jfs/super.c:105 alloc_inode fs/inode.c:236 [inline] new_inode_pseudo+0x60/0x210 fs/inode.c:976 new_inode+0x25/0x1d0 fs/inode.c:1005 jfs_fill_super+0x404/0xc70 fs/jfs/super.c:549 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 entry_SYSCALL_64_after_hwframe+0x66/0xd0 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 free_slab mm/slub.c:2015 [inline] discard_slab mm/slub.c:2021 [inline] __unfreeze_partials+0x1b7/0x210 mm/slub.c:2507 put_cpu_partial+0x132/0x1a0 mm/slub.c:2587 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 anon_vma_alloc mm/rmap.c:90 [inline] __anon_vma_prepare+0xb9/0x410 mm/rmap.c:199 anon_vma_prepare include/linux/rmap.h:152 [inline] do_anonymous_page mm/memory.c:3834 [inline] handle_pte_fault mm/memory.c:4646 [inline] __handle_mm_fault mm/memory.c:4783 [inline] handle_mm_fault+0x4f66/0x5960 mm/memory.c:4881 do_user_addr_fault arch/x86/mm/fault.c:1357 [inline] handle_page_fault arch/x86/mm/fault.c:1445 [inline] exc_page_fault+0x271/0x700 arch/x86/mm/fault.c:1501 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606 Memory state around the buggy address: ffff8880701a2c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880701a2d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880701a2d80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ^ ffff8880701a2e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880701a2e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================