================================================================== BUG: KASAN: slab-out-of-bounds in udf_readdir+0xcaa/0x2170 fs/udf/dir.c:182 Write of size 149 at addr ffff888078abf86a by task syz-executor/6976 CPU: 1 PID: 6976 Comm: syz-executor Not tainted 5.15.165-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189 memcpy+0x3c/0x60 mm/kasan/shadow.c:66 udf_readdir+0xcaa/0x2170 fs/udf/dir.c:182 iterate_dir+0x224/0x570 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 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: 0033:0x7fe311b28053 Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 62 43 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:00007ffd19cec1d8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0000555556481600 RCX: 00007fe311b28053 RDX: 0000000000008000 RSI: 0000555556481600 RDI: 0000000000000005 RBP: 00005555564815d4 R08: 0000000000028a41 R09: 0000000000000000 R10: 00007fe311c67ca0 R11: 0000000000000293 R12: ffffffffffffffa8 R13: 0000000000000010 R14: 00005555564815d0 R15: 00007ffd19cee480 Allocated by task 6976: 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_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247 kmalloc include/linux/slab.h:591 [inline] udf_readdir+0xbc6/0x2170 fs/udf/dir.c:172 iterate_dir+0x224/0x570 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 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 Last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 kvfree_call_rcu+0x118/0x8a0 kernel/rcu/tree.c:3596 drop_sysctl_table+0x317/0x460 fs/proc/proc_sysctl.c:1678 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1681 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1681 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1681 unregister_sysctl_table+0x88/0x130 fs/proc/proc_sysctl.c:1716 __devinet_sysctl_unregister net/ipv4/devinet.c:2613 [inline] devinet_exit_net+0x1a9/0x230 net/ipv4/devinet.c:2758 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x6ce/0xb60 net/core/net_namespace.c:599 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Second to last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 kvfree_call_rcu+0x118/0x8a0 kernel/rcu/tree.c:3596 inetdev_event+0x38a/0x1490 net/ipv4/devinet.c:1584 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2018 [inline] call_netdevice_notifiers_extack net/core/dev.c:2030 [inline] call_netdevice_notifiers net/core/dev.c:2044 [inline] dev_close_many+0x37c/0x530 net/core/dev.c:1619 unregister_netdevice_many+0x4b0/0x18f0 net/core/dev.c:11070 default_device_exit_batch+0x390/0x3f0 net/core/dev.c:11627 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x763/0xb60 net/core/net_namespace.c:599 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff888078abf800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 106 bytes inside of 256-byte region [ffff888078abf800, ffff888078abf900) The buggy address belongs to the page: page:ffffea0001e2af80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78abe head:ffffea0001e2af80 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001704a80 0000000f00000002 ffff888017041b40 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 3923, ts 86314608258, free_ts 86208150625 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5423 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] __kmalloc+0x1c9/0x300 mm/slub.c:4403 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] fib_create_info+0xaab/0x2570 net/ipv4/fib_semantics.c:1478 fib_table_insert+0x213/0x1f90 net/ipv4/fib_trie.c:1231 fib_magic net/ipv4/fib_frontend.c:1093 [inline] fib_add_ifaddr+0x47f/0x1730 net/ipv4/fib_frontend.c:1115 fib_netdev_event+0x61d/0x760 net/ipv4/fib_frontend.c:1475 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391 __dev_notify_flags+0x304/0x610 dev_change_flags+0xe7/0x190 net/core/dev.c:8889 do_setlink+0xc21/0x3d80 net/core/rtnetlink.c:2747 __rtnl_newlink net/core/rtnetlink.c:3418 [inline] rtnl_newlink+0x17d6/0x2070 net/core/rtnetlink.c:3540 rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5618 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2504 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] kmem_cache_alloc_node_trace+0x128/0x2e0 mm/slub.c:3270 kmalloc_node include/linux/slab.h:609 [inline] kzalloc_node include/linux/slab.h:732 [inline] __get_vm_area_node+0x11f/0x2f0 mm/vmalloc.c:2416 __vmalloc_node_range+0xe3/0x8c0 mm/vmalloc.c:3019 __vmalloc_node mm/vmalloc.c:3079 [inline] vzalloc+0x75/0x80 mm/vmalloc.c:3149 alloc_counters+0xcf/0x7c0 net/ipv4/netfilter/ip_tables.c:800 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:822 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1023 [inline] do_ipt_get_ctl+0xead/0x1880 net/ipv4/netfilter/ip_tables.c:1669 nf_getsockopt+0x28e/0x2b0 net/netfilter/nf_sockopt.c:116 Memory state around the buggy address: ffff888078abf780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888078abf800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888078abf880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06 ^ ffff888078abf900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888078abf980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================