EXT4-fs warning (device sda): __ext4_ioctl:1237: Setting inode version is not supported with metadata_csum enabled. ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70 Read of size 8 at addr ffff88803e6ad2a8 by task syz-executor/24132 CPU: 0 PID: 24132 Comm: syz-executor Not tainted 6.1.0-rc7-next-20221205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x8f/0xb7 print_report+0x175/0x478 kasan_report+0xbf/0x1c0 __lock_acquire+0x42c9/0x5e70 lock_acquire+0x1a6/0x530 _raw_spin_lock_irq+0x36/0x50 kmemleak_scan+0x1a0/0x1600 kmemleak_write+0x574/0x680 full_proxy_write+0x121/0x190 vfs_write+0x358/0xe40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f210f0bd5c3 Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007fffb7e5f138 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fffb7e5f778 RCX: 00007f210f0bd5c3 RDX: 0000000000000004 RSI: 00007f210f173ed9 RDI: 0000000000000003 RBP: 0000000000000002 R08: 000000000000078d R09: 00007fffb7f82080 R10: 00007fffb7f82090 R11: 0000000000000246 R12: 00000000fffffff6 R13: 00007fffb7e60ef1 R14: 0000000000000000 R15: 00000000001d7fe9 Allocated by task 24007: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc10 __kmem_cache_alloc_node+0x25b/0x400 __kmalloc+0x46/0xc0 __register_sysctl_table+0x116/0x1150 nf_conntrack_pernet_init+0x682/0xc80 ops_init+0xbb/0x680 setup_net+0x40c/0x9d0 copy_net_ns+0x31c/0x760 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x3b7/0x4a0 copy_process+0x29e3/0x7220 kernel_clone+0xeb/0x950 __do_sys_clone3+0x1d9/0x370 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc Freed by task 19: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/0x610 rcu_core+0x7e2/0x2090 __do_softirq+0x1c7/0x8f9 Last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free_bulk.part.0+0x305/0x770 kfree_rcu_work+0x3fe/0xbe0 process_one_work+0xa17/0x16a0 worker_thread+0x63b/0x1260 kthread+0x2f1/0x3a0 ret_from_fork+0x2c/0x50 Second to last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 __kmem_cache_free+0x95/0x410 kernfs_fop_write_iter+0x200/0x610 vfs_write+0xa4f/0xe40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc The buggy address belongs to the object at ffff88803e6ad290 which belongs to the cache kmemleak_object of size 368 The buggy address is located 24 bytes inside of 368-byte region [ffff88803e6ad290, ffff88803e6ad400) The buggy address belongs to the physical page: page:000000004513e03c refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803e6acbd0 pfn:0x3e6ac head:000000004513e03c order:1 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=1) raw: 0100000000010200 ffff88800844f780 ffffea0000575e90 ffffea0001236390 raw: ffff88803e6acbd0 000000000012000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88803e6ad180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803e6ad200: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc >ffff88803e6ad280: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88803e6ad300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803e6ad380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================