================================================================== BUG: KASAN: slab-out-of-bounds in udf_readdir+0xcaa/0x2170 fs/udf/dir.c:182 Write of size 73 at addr ffff8880615326b6 by task syz-executor/20580 CPU: 1 PID: 20580 Comm: syz-executor Not tainted 5.15.164-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 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: 0033:0x7fd84d7e5a93 Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 32 44 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:00007fff782b55a8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0000555555c59600 RCX: 00007fd84d7e5a93 RDX: 0000000000008000 RSI: 0000555555c59600 RDI: 0000000000000005 RBP: 0000555555c595d4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 R13: 0000000000000010 R14: 0000555555c595d0 R15: 00007fff782b7850 Allocated by task 20580: 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:1680 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1683 unregister_sysctl_table+0x88/0x130 fs/proc/proc_sysctl.c:1718 mpls_dev_sysctl_unregister+0x86/0xc0 net/mpls/af_mpls.c:1445 mpls_dev_notify+0x54b/0x780 net/mpls/af_mpls.c:1663 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] unregister_netdevice_many+0xf1b/0x18f0 net/core/dev.c:11094 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 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 drop_sysctl_table+0x317/0x460 fs/proc/proc_sysctl.c:1680 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1683 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1683 drop_sysctl_table+0x329/0x460 fs/proc/proc_sysctl.c:1683 unregister_sysctl_table+0x88/0x130 fs/proc/proc_sysctl.c:1718 netfilter_log_sysctl_exit net/netfilter/nf_log.c:514 [inline] nf_log_net_exit+0x5c/0xc0 net/netfilter/nf_log.c:555 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 The buggy address belongs to the object at ffff888061532600 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 182 bytes inside of 256-byte region [ffff888061532600, ffff888061532700) The buggy address belongs to the page: page:ffffea0001854c80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x61532 head:ffffea0001854c80 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001917b80 0000000300000003 ffff888011c41b40 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 9692, ts 369935895484, free_ts 365309983200 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] new_dir fs/proc/proc_sysctl.c:954 [inline] get_subdir fs/proc/proc_sysctl.c:999 [inline] __register_sysctl_table+0x9f1/0x1220 fs/proc/proc_sysctl.c:1348 neigh_sysctl_register+0x455/0x530 net/core/neighbour.c:3713 addrconf_sysctl_register+0xac/0x180 net/ipv6/addrconf.c:7133 ipv6_add_dev+0xc96/0x1180 net/ipv6/addrconf.c:454 addrconf_notify+0x671/0xf30 net/ipv6/addrconf.c:3578 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+0x145/0x1b0 net/core/dev.c:2044 register_netdevice+0x12e8/0x1720 net/core/dev.c:10388 xfrmi_create net/xfrm/xfrm_interface_core.c:156 [inline] xfrmi_newlink+0x324/0x4b0 net/xfrm/xfrm_interface_core.c:706 __rtnl_newlink net/core/rtnetlink.c:3501 [inline] rtnl_newlink+0x14bd/0x2070 net/core/rtnetlink.c:3549 rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5629 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 __vunmap+0x8d4/0xa20 mm/vmalloc.c:2621 free_list_bitmaps+0x6b/0x1a0 fs/reiserfs/journal.c:250 free_journal_ram+0xf8/0x3f0 fs/reiserfs/journal.c:1884 do_journal_release+0x362/0x4d0 fs/reiserfs/journal.c:1957 journal_release+0x1b/0x30 fs/reiserfs/journal.c:1968 reiserfs_put_super+0x237/0x4b0 fs/reiserfs/super.c:616 generic_shutdown_super+0x136/0x2c0 fs/super.c:475 kill_block_super+0x7a/0xe0 fs/super.c:1414 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 Memory state around the buggy address: ffff888061532580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888061532600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888061532680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06 ^ ffff888061532700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888061532780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================