EXT4-fs error (device loop2): ext4_xattr_ibody_find:2219: inode #12: comm syz-executor: corrupted in-inode xattr EXT4-fs error (device loop2): ext4_xattr_ibody_find:2219: inode #12: comm syz-executor: corrupted in-inode xattr ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data fs/ext4/inline.c:209 [inline] BUG: KASAN: slab-out-of-bounds in ext4_read_inline_dir+0x435/0xd90 fs/ext4/inline.c:1515 Read of size 68 at addr ffff88812971a6d3 by task syz-executor/353 CPU: 1 PID: 353 Comm: syz-executor Not tainted 5.10.239-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:77 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0xe2/0x130 mm/kasan/report.c:452 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x280/0x290 mm/kasan/generic.c:189 memcpy+0x2d/0x70 mm/kasan/shadow.c:65 ext4_read_inline_data fs/ext4/inline.c:209 [inline] ext4_read_inline_dir+0x435/0xd90 fs/ext4/inline.c:1515 ext4_readdir+0x380/0x39b0 fs/ext4/dir.c:161 iterate_dir+0x260/0x570 fs/readdir.c:-1 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0xe5/0x240 fs/readdir.c:354 __x64_sys_getdents64+0x7b/0x90 fs/readdir.c:354 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f69a2c29313 Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 62 3e f8 ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 RSP: 002b:00007ffc8ef9acd8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00005555687e6520 RCX: 00007f69a2c29313 RDX: 0000000000008000 RSI: 00005555687e6520 RDI: 0000000000000006 RBP: 00005555687e64f4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 R13: 0000000000000016 R14: 00005555687e64f0 R15: 00007ffc8ef9e080 Allocated by task 188: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:430 [inline] ____kasan_kmalloc mm/kasan/common.c:509 [inline] __kasan_kmalloc+0xda/0x110 mm/kasan/common.c:518 kasan_kmalloc include/linux/kasan.h:254 [inline] __kmalloc+0x1a7/0x330 mm/slub.c:4033 __kmalloc_node include/linux/slab.h:418 [inline] kmalloc_node include/linux/slab.h:575 [inline] kvmalloc_node+0x88/0x130 mm/util.c:612 kvmalloc include/linux/mm.h:822 [inline] kvzalloc include/linux/mm.h:830 [inline] allocate_hook_entries_size net/netfilter/core.c:61 [inline] __nf_hook_entries_try_shrink+0x332/0x730 net/netfilter/core.c:248 __nf_unregister_net_hook+0x3bf/0x570 net/netfilter/core.c:478 nf_unregister_net_hook net/netfilter/core.c:-1 [inline] nf_unregister_net_hooks+0xe2/0x150 net/netfilter/core.c:571 ip6t_unregister_table_pre_exit+0x49/0x70 net/ipv6/netfilter/ip6_tables.c:1783 ip6table_filter_net_pre_exit+0x54/0x60 net/ipv6/netfilter/ip6table_filter.c:79 ops_pre_exit_list net/core/net_namespace.c:175 [inline] cleanup_net+0x4a8/0xb70 net/core/net_namespace.c:597 process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301 worker_thread+0xa6a/0x13b0 kernel/workqueue.c:2447 kthread+0x346/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 The buggy address belongs to the object at ffff88812971a680 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 19 bytes to the right of 64-byte region [ffff88812971a680, ffff88812971a6c0) The buggy address belongs to the page: page:ffffea0004a5c680 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12971a flags: 0x4000000000000200(slab) raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100043800 raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 9, ts 41130549514, free_ts 40160877480 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook mm/page_alloc.c:2456 [inline] prep_new_page+0x179/0x180 mm/page_alloc.c:2462 get_page_from_freelist+0x2235/0x23d0 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5357 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1808 [inline] new_slab+0x84/0x3f0 mm/slub.c:1869 new_slab_objects mm/slub.c:2627 [inline] ___slab_alloc+0x2a6/0x450 mm/slub.c:2791 __slab_alloc+0x63/0xa0 mm/slub.c:2831 slab_alloc_node mm/slub.c:2913 [inline] slab_alloc mm/slub.c:2955 [inline] kmem_cache_alloc_trace+0x1b3/0x2e0 mm/slub.c:2972 kmalloc include/linux/slab.h:552 [inline] ip_setup_cork+0x224/0x820 net/ipv4/ip_output.c:1276 ip_append_data+0x145/0x1a0 net/ipv4/ip_output.c:1329 icmp_push_reply+0x123/0x460 net/ipv4/icmp.c:376 __icmp_send+0xc5f/0x1070 net/ipv4/icmp.c:776 icmp_send include/net/icmp.h:43 [inline] __udp4_lib_rcv+0x13d1/0x1ca0 net/ipv4/udp.c:2438 udp_rcv+0x21/0x30 net/ipv4/udp.c:2597 ip_protocol_deliver_rcu+0x2f0/0x640 net/ipv4/ip_input.c:204 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_local_deliver+0x2de/0x530 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:461 [inline] ip_rcv_finish net/ipv4/ip_input.c:436 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_rcv+0x152/0x270 net/ipv4/ip_input.c:547 page last free stack trace: reset_page_owner include/linux/page_owner.h:28 [inline] free_pages_prepare mm/page_alloc.c:1349 [inline] free_pcp_prepare mm/page_alloc.c:1421 [inline] free_unref_page_prepare+0x2b7/0x2d0 mm/page_alloc.c:3336 free_unref_page mm/page_alloc.c:3391 [inline] free_the_page mm/page_alloc.c:5416 [inline] __free_pages+0x14b/0x380 mm/page_alloc.c:5427 __vunmap+0x84d/0x9d0 mm/vmalloc.c:2301 __vfree mm/vmalloc.c:2350 [inline] vfree+0x61/0x90 mm/vmalloc.c:2381 kcov_put kernel/kcov.c:408 [inline] kcov_close+0x2b/0x50 kernel/kcov.c:510 __fput+0x2fb/0x770 fs/file_table.c:281 ____fput+0x15/0x20 fs/file_table.c:314 task_work_run+0x127/0x190 kernel/task_work.c:189 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xa4f/0x2480 kernel/exit.c:872 do_group_exit+0x141/0x310 kernel/exit.c:986 get_signal+0xf7d/0x12e0 kernel/signal.c:2793 arch_do_signal_or_restart+0xbf/0x10f0 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop+0xa2/0xe0 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0x68/0x90 kernel/entry/common.c:274 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff88812971a580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88812971a600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff88812971a680: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ^ ffff88812971a700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88812971a780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ================================================================== EXT4-fs error (device loop2): ext4_read_inline_dir:1596: inode #12: block 7: comm syz-executor: path /0/file1/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=2239623941, rec_len=29527, size=148 fake=0 EXT4-fs error (device loop2): ext4_read_inline_dir:1596: inode #12: block 7: comm syz-executor: path /0/file1/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=2239623941, rec_len=29527, size=148 fake=0 EXT4-fs error (device loop2): empty_inline_dir:1850: inode #12: block 7: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=2239623941, rec_len=29527, size=60 fake=0 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs error (device loop2): ext4_read_inline_dir:1596: inode #12: block 7: comm syz-executor: path /0/file1/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=2239623941, rec_len=29527, size=148 fake=0 EXT4-fs error (device loop2): ext4_read_inline_dir:1596: inode #12: block 7: comm syz-executor: path /0/file1/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=2239623941, rec_len=29527, size=148 fake=0 EXT4-fs error (device loop2): empty_inline_dir:1850: inode #12: block 7: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=2239623941, rec_len=29527, size=60 fake=0 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs error (device loop2): ext4_read_inline_dir:1596: inode #12: block 7: comm syz-executor: path /0/file1/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=2239623941, rec_len=29527, size=148 fake=0 EXT4-fs error (device loop2): ext4_read_inline_dir:1596: inode #12: block 7: comm syz-executor: path /0/file1/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=2239623941, rec_len=29527, size=148 fake=0 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60 EXT4-fs warning (device loop2): empty_inline_dir:1857: bad inline directory (dir #12) - inode 2239623941, rec_len 29527, name_len 58inline size 60