loop3: detected capacity change from 0 to 2048 UDF-fs: error (device loop3): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2105 Write of size 4 at addr ffff88807de07ff0 by task syz.3.1614/11454 CPU: 0 PID: 11454 Comm: syz.3.1614 Not tainted 6.1.112-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+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2105 udf_add_entry+0x17b7/0x3350 fs/udf/namei.c:482 udf_mkdir+0x1a8/0xaa0 fs/udf/namei.c:681 vfs_mkdir+0x3b6/0x590 fs/namei.c:4108 do_mkdirat+0x225/0x360 fs/namei.c:4133 __do_sys_mkdir fs/namei.c:4153 [inline] __se_sys_mkdir fs/namei.c:4151 [inline] __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4151 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8cfaf7dff9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8cfbde0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f8cfb135f80 RCX: 00007f8cfaf7dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007f8cfaff0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8cfb135f80 R15: 00007fff73f7e6c8 Allocated by task 3694: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:557 [inline] kzalloc include/linux/slab.h:693 [inline] mca_alloc net/ipv6/mcast.c:880 [inline] __ipv6_dev_mc_inc+0x426/0xa80 net/ipv6/mcast.c:936 addrconf_join_solict net/ipv6/addrconf.c:2198 [inline] addrconf_dad_begin net/ipv6/addrconf.c:4023 [inline] addrconf_dad_work+0x420/0x16b0 net/ipv6/addrconf.c:4148 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2845 fib6_info_release include/net/ip6_fib.h:340 [inline] fib6_del_route net/ipv6/ip6_fib.c:1999 [inline] fib6_del+0x10e8/0x1570 net/ipv6/ip6_fib.c:2032 fib6_clean_node+0x2ed/0x5d0 net/ipv6/ip6_fib.c:2194 fib6_walk_continue+0x636/0x8c0 net/ipv6/ip6_fib.c:2116 fib6_walk+0x168/0x2b0 net/ipv6/ip6_fib.c:2164 fib6_clean_tree net/ipv6/ip6_fib.c:2244 [inline] __fib6_clean_all+0x31b/0x4b0 net/ipv6/ip6_fib.c:2260 rt6_sync_down_dev net/ipv6/route.c:4902 [inline] rt6_disable_ip+0x14c/0x890 net/ipv6/route.c:4907 addrconf_ifdown+0x154/0x1b90 net/ipv6/addrconf.c:3782 addrconf_notify+0x3ec/0xf60 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1970 [inline] call_netdevice_notifiers_extack net/core/dev.c:2008 [inline] call_netdevice_notifiers net/core/dev.c:2022 [inline] dev_close_many+0x37c/0x530 net/core/dev.c:1570 unregister_netdevice_many+0x4f7/0x17a0 net/core/dev.c:10856 default_device_exit_batch+0x956/0x9d0 net/core/dev.c:11395 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x763/0xb60 net/core/net_namespace.c:604 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 kvfree_call_rcu+0x116/0x8c0 kernel/rcu/tree.c:3401 drop_sysctl_table+0x317/0x460 fs/proc/proc_sysctl.c:1727 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1730 unregister_sysctl_table+0x86/0x130 fs/proc/proc_sysctl.c:1765 neigh_sysctl_unregister+0x74/0x90 net/core/neighbour.c:3866 devinet_sysctl_unregister net/ipv4/devinet.c:2651 [inline] inetdev_destroy net/ipv4/devinet.c:327 [inline] inetdev_event+0x814/0x1490 net/ipv4/devinet.c:1602 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1970 [inline] call_netdevice_notifiers_extack net/core/dev.c:2008 [inline] call_netdevice_notifiers net/core/dev.c:2022 [inline] unregister_netdevice_many+0xebf/0x17a0 net/core/dev.c:10882 default_device_exit_batch+0x956/0x9d0 net/core/dev.c:11395 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x763/0xb60 net/core/net_namespace.c:604 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff88807de07c00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff88807de07c00, ffff88807de07e00) The buggy address belongs to the physical page: page:ffffea0001f78100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7de04 head:ffffea0001f78100 order:2 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888017c41c80 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3077, tgid 3077 (acpid), ts 22490394127, free_ts 20222214567 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517 prep_new_page mm/page_alloc.c:2524 [inline] get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4290 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5558 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:935 [inline] __kmalloc+0xa1/0x230 mm/slab_common.c:949 kmalloc include/linux/slab.h:562 [inline] kzalloc include/linux/slab.h:693 [inline] tomoyo_init_log+0x1b37/0x2040 security/tomoyo/audit.c:275 tomoyo_supervisor+0x396/0x12d0 security/tomoyo/common.c:2088 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x58d/0x7f0 security/tomoyo/file.c:734 security_file_ioctl+0x6d/0xa0 security/security.c:1568 __do_sys_ioctl fs/ioctl.c:864 [inline] __se_sys_ioctl+0x47/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1444 [inline] free_pcp_prepare mm/page_alloc.c:1494 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464 free_contig_range+0x9a/0x150 mm/page_alloc.c:9518 destroy_args+0xfe/0x997 mm/debug_vm_pgtable.c:1031 debug_vm_pgtable+0x416/0x46b mm/debug_vm_pgtable.c:1354 do_one_initcall+0x265/0x8f0 init/main.c:1298 do_initcall_level+0x157/0x207 init/main.c:1371 do_initcalls+0x49/0x86 init/main.c:1387 kernel_init_freeable+0x45c/0x60f init/main.c:1626 kernel_init+0x19/0x290 init/main.c:1514 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff88807de07e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807de07f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807de07f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807de08000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807de08080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================