ffff88808938ee60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ffff88808938ee70: 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+0xdc1/0xdf0 lib/hexdump.c:193 Read of size 1 at addr ffff88808938ee80 by task syz-executor.1/12553 CPU: 0 PID: 12553 Comm: syz-executor.1 Not tainted 6.1.0-rc1-next-20221021-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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:253 [inline] print_report+0x15e/0x45d mm/kasan/report.c:364 kasan_report+0xbb/0x1f0 mm/kasan/report.c:464 hex_dump_to_buffer+0xdc1/0xdf0 lib/hexdump.c:193 print_hex_dump+0x12f/0x1d0 lib/hexdump.c:276 ea_get.cold+0xaa/0x197 fs/jfs/xattr.c:561 __jfs_setxattr+0xdb/0xfc0 fs/jfs/xattr.c:671 __jfs_xattr_set+0xc9/0x150 fs/jfs/xattr.c:917 jfs_xattr_set_os2+0x48/0x70 fs/jfs/xattr.c:961 __vfs_removexattr+0xfe/0x170 fs/xattr.c:479 __vfs_removexattr_locked+0x1ac/0x440 fs/xattr.c:514 vfs_removexattr+0xcb/0x250 fs/xattr.c:536 removexattr+0xd0/0x130 fs/xattr.c:878 path_removexattr+0x174/0x1a0 fs/xattr.c:892 __do_sys_lremovexattr fs/xattr.c:912 [inline] __se_sys_lremovexattr fs/xattr.c:909 [inline] __x64_sys_lremovexattr+0x52/0x70 fs/xattr.c:909 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: 0033:0x7fdcd168b5f9 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:00007fdcd271d168 EFLAGS: 00000246 ORIG_RAX: 00000000000000c6 RAX: ffffffffffffffda RBX: 00007fdcd17abf80 RCX: 00007fdcd168b5f9 RDX: 0000000000000000 RSI: 0000000020004dc0 RDI: 0000000020000080 RBP: 00007fdcd16e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf233a83f R14: 00007fdcd271d300 R15: 0000000000022000 Allocated by task 12553: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 __kasan_unpoison_range-0xf/0x10 __kasan_kmalloc_large-0x2/0xe0 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:754 [inline] slab_alloc_node mm/slub.c:3403 [inline] slab_alloc mm/slub.c:3411 [inline] __kmem_cache_alloc_lru mm/slub.c:3418 [inline] kmem_cache_alloc_lru+0x254/0x730 mm/slub.c:3434 alloc_inode_sb include/linux/fs.h:3117 [inline] jfs_alloc_inode+0x23/0x60 fs/jfs/super.c:105 alloc_inode+0x61/0x230 fs/inode.c:259 iget_locked+0x1b7/0x6f0 fs/inode.c:1286 jfs_iget+0x1a/0x4d0 fs/jfs/inode.c:29 jfs_lookup+0x246/0x2f0 fs/jfs/namei.c:1462 __lookup_slow+0x24c/0x460 fs/namei.c:1685 lookup_slow fs/namei.c:1702 [inline] walk_component+0x33f/0x5a0 fs/namei.c:1993 lookup_last fs/namei.c:2450 [inline] path_lookupat+0x1ba/0x840 fs/namei.c:2474 filename_lookup+0x1ce/0x590 fs/namei.c:2503 user_path_at_empty+0x42/0x60 fs/namei.c:2876 user_path_at include/linux/namei.h:57 [inline] path_removexattr+0x85/0x1a0 fs/xattr.c:887 __do_sys_lremovexattr fs/xattr.c:912 [inline] __se_sys_lremovexattr fs/xattr.c:909 [inline] __x64_sys_lremovexattr+0x52/0x70 fs/xattr.c:909 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 Last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:481 __call_rcu_common.constprop.0+0x99/0x820 kernel/rcu/tree.c:2777 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1747 [inline] iput.part.0+0x59b/0x880 fs/inode.c:1773 iput+0x58/0x70 fs/inode.c:1763 diFreeSpecial+0x73/0x100 fs/jfs/jfs_imap.c:548 jfs_umount+0x1cd/0x400 fs/jfs/jfs_umount.c:73 jfs_put_super+0x81/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x154/0x410 fs/super.c:492 kill_block_super+0x97/0xf0 fs/super.c:1428 deactivate_locked_super+0x94/0x160 fs/super.c:332 deactivate_super+0xad/0xd0 fs/super.c:363 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0x16b/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:481 __call_rcu_common.constprop.0+0x99/0x820 kernel/rcu/tree.c:2777 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1747 [inline] iput.part.0+0x59b/0x880 fs/inode.c:1773 iput+0x58/0x70 fs/inode.c:1763 diFreeSpecial+0x73/0x100 fs/jfs/jfs_imap.c:548 jfs_umount+0x1cd/0x400 fs/jfs/jfs_umount.c:73 jfs_put_super+0x81/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x154/0x410 fs/super.c:492 kill_block_super+0x97/0xf0 fs/super.c:1428 deactivate_locked_super+0x94/0x160 fs/super.c:332 deactivate_super+0xad/0xd0 fs/super.c:363 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0x16b/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88808938e5c0 which belongs to the cache jfs_ip of size 2240 The buggy address is located 0 bytes to the right of 2240-byte region [ffff88808938e5c0, ffff88808938ee80) The buggy address belongs to the physical page: page:ffffea000224e200 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea0002244400 pfn:0x89388 head:ffffea000224e200 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888027b4ac01 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff88801b4f0b40 dead0000800d000d 0000000000000000 raw: ffffea0002244400 dead000000000002 00000001ffffffff ffff888027b4ac01 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 9217, tgid 9216 (syz-executor.1), ts 324949204335, free_ts 304714189670 prep_new_page mm/page_alloc.c:2538 [inline] get_page_from_freelist+0x10b5/0x2d50 mm/page_alloc.c:4287 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5546 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1794 [inline] allocate_slab+0x213/0x300 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3185 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3284 slab_alloc_node mm/slub.c:3369 [inline] slab_alloc mm/slub.c:3411 [inline] __kmem_cache_alloc_lru mm/slub.c:3418 [inline] kmem_cache_alloc_lru+0x4ad/0x730 mm/slub.c:3434 alloc_inode_sb include/linux/fs.h:3117 [inline] jfs_alloc_inode+0x23/0x60 fs/jfs/super.c:105 alloc_inode+0x61/0x230 fs/inode.c:259 iget_locked+0x1b7/0x6f0 fs/inode.c:1286 jfs_iget+0x1a/0x4d0 fs/jfs/inode.c:29 jfs_fill_super+0x6a4/0xc70 fs/jfs/super.c:580 mount_bdev+0x34d/0x410 fs/super.c:1401 legacy_get_tree+0x105/0x220 fs/fs_context.c:617 vfs_get_tree+0x89/0x2f0 fs/super.c:1531 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1458 [inline] free_pcp_prepare+0x65c/0xd90 mm/page_alloc.c:1508 free_unref_page_prepare mm/page_alloc.c:3386 [inline] free_unref_page+0x19/0x4d0 mm/page_alloc.c:3482 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2591 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x18e/0x220 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x62/0x80 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:754 [inline] slab_alloc_node mm/slub.c:3403 [inline] slab_alloc mm/slub.c:3411 [inline] __kmem_cache_alloc_lru mm/slub.c:3418 [inline] kmem_cache_alloc_lru+0x254/0x730 mm/slub.c:3434 alloc_inode_sb include/linux/fs.h:3117 [inline] sock_alloc_inode+0x23/0x1d0 net/socket.c:304 alloc_inode+0x61/0x230 fs/inode.c:259 new_inode_pseudo+0x13/0x80 fs/inode.c:1018 sock_alloc+0x3c/0x260 net/socket.c:627 __sock_create+0xb9/0x790 net/socket.c:1479 sock_create net/socket.c:1566 [inline] __sys_socket_create net/socket.c:1603 [inline] __sys_socket_create net/socket.c:1588 [inline] __sys_socket+0x12f/0x240 net/socket.c:1636 __do_sys_socket net/socket.c:1649 [inline] __se_sys_socket net/socket.c:1647 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1647 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: ffff88808938ed80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88808938ee00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88808938ee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88808938ef00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88808938ef80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================