syzbot

XFS (loop4): Quotacheck needed: Please wait.
==================================================================
BUG: KASAN: slab-use-after-free in lockdep_register_key+0x396/0x410 kernel/locking/lockdep.c:1231
Read of size 8 at addr ffff88803cd95360 by task syz-executor.4/304

CPU: 0 PID: 304 Comm: syz-executor.4 Not tainted 6.3.0-rc4-next-20230330-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351
 print_report mm/kasan/report.c:462 [inline]
 kasan_report+0x11c/0x130 mm/kasan/report.c:572
 lockdep_register_key+0x396/0x410 kernel/locking/lockdep.c:1231
 wq_init_lockdep kernel/workqueue.c:3604 [inline]
 alloc_workqueue+0x3f8/0x1110 kernel/workqueue.c:4476
 xfs_pwork_init+0xe3/0x3f0 fs/xfs/xfs_pwork.c:74
 xfs_iwalk_threaded+0x110/0x530 fs/xfs/xfs_iwalk.c:656
 xfs_qm_quotacheck+0x211/0x940 fs/xfs/xfs_qm.c:1322
 xfs_qm_mount_quotas+0x125/0x690 fs/xfs/xfs_qm.c:1457
 xfs_mountfs+0x1e07/0x1f60 fs/xfs/xfs_mount.c:959
 xfs_fs_fill_super+0x1412/0x1f30 fs/xfs/xfs_super.c:1677
 get_tree_bdev+0x444/0x760 fs/super.c:1303
 vfs_get_tree+0x8d/0x350 fs/super.c:1510
 do_new_mount fs/namespace.c:3039 [inline]
 path_mount+0x134b/0x1e40 fs/namespace.c:3369
 do_mount fs/namespace.c:3382 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __x64_sys_mount+0x283/0x300 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb185c8d62a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1869f7f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000000972d RCX: 00007fb185c8d62a
RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 00007fb1869f7fe0
RBP: 00007fb1869f8020 R08: 00007fb1869f8020 R09: 0000000000008010
R10: 0000000000008010 R11: 0000000000000202 R12: 0000000020000040
R13: 00000000200000c0 R14: 00007fb1869f7fe0 R15: 0000000020000080
 </TASK>

Allocated by task 5395:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 ____kasan_kmalloc mm/kasan/common.c:333 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:196 [inline]
 __do_kmalloc_node mm/slab_common.c:966 [inline]
 __kmalloc+0x5e/0x190 mm/slab_common.c:979
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:680 [inline]
 ieee802_11_parse_elems_full+0x106/0x1340 net/mac80211/util.c:1609
 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2311 [inline]
 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2318 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline]
 ieee80211_ibss_rx_queued_mgmt+0xc20/0x2d50 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1594 [inline]
 ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1648
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x33e/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Freed by task 5395:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
 slab_free mm/slub.c:3787 [inline]
 __kmem_cache_free+0xaf/0x2d0 mm/slub.c:3800
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x19ea/0x2d50 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1594 [inline]
 ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1648
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x33e/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Last potentially related work creation:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491
 insert_work+0x48/0x360 kernel/workqueue.c:1365
 __queue_work+0x5c6/0xfb0 kernel/workqueue.c:1526
 queue_work_on+0xf2/0x110 kernel/workqueue.c:1554
 bio_endio+0x595/0x6a0 block/bio.c:1608
 req_bio_endio block/blk-mq.c:759 [inline]
 blk_update_request+0x56b/0x14f0 block/blk-mq.c:904
 blk_mq_end_request+0x59/0x4c0 block/blk-mq.c:1021
 blk_flush_complete_seq+0x532/0xf80 block/blk-flush.c:210
 flush_end_io+0x77e/0xc60 block/blk-flush.c:268
 __blk_mq_end_request block/blk-mq.c:1011 [inline]
 blk_mq_end_request+0x17b/0x4c0 block/blk-mq.c:1023
 lo_complete_rq+0x1c6/0x280 drivers/block/loop.c:370
 blk_complete_reqs+0xad/0xe0 block/blk-mq.c:1099
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571

Second to last potentially related work creation:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491
 kvfree_call_rcu+0x70/0xad0 kernel/rcu/tree.c:3331
 neigh_destroy+0x433/0x660 net/core/neighbour.c:910
 neigh_release include/net/neighbour.h:447 [inline]
 neigh_cleanup_and_release net/core/neighbour.c:103 [inline]
 neigh_periodic_work+0x726/0xb80 net/core/neighbour.c:994
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x33e/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

The buggy address belongs to the object at ffff88803cd95000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 864 bytes inside of
 freed 1024-byte region [ffff88803cd95000, ffff88803cd95400)

The buggy address belongs to the physical page:
page:ffffea0000f36400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3cd90
head:ffffea0000f36400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff888012441dc0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5125, tgid 5125 (syz-executor.5), ts 310189821472, free_ts 0
 prep_new_page mm/page_alloc.c:1729 [inline]
 get_page_from_freelist+0xf75/0x2aa0 mm/page_alloc.c:3493
 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4759
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2283
 alloc_slab_page mm/slub.c:1851 [inline]
 allocate_slab+0x28e/0x380 mm/slub.c:1998
 new_slab mm/slub.c:2051 [inline]
 ___slab_alloc+0xa91/0x1400 mm/slub.c:3193
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 __kmem_cache_alloc_node+0x136/0x320 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:965 [inline]
 __kmalloc_node_track_caller+0x4f/0x1a0 mm/slab_common.c:986
 kmalloc_reserve+0xf0/0x270 net/core/skbuff.c:535
 __alloc_skb+0x129/0x330 net/core/skbuff.c:604
 alloc_skb include/linux/skbuff.h:1269 [inline]
 nlmsg_new include/net/netlink.h:1003 [inline]
 inet6_rt_notify+0xf0/0x2b0 net/ipv6/route.c:6166
 fib6_add_rt2node net/ipv6/ip6_fib.c:1251 [inline]
 fib6_add+0x200d/0x4080 net/ipv6/ip6_fib.c:1477
 __ip6_ins_rt net/ipv6/route.c:1302 [inline]
 ip6_ins_rt+0xb6/0x110 net/ipv6/route.c:1312
 __ipv6_ifa_notify+0x8fe/0xb90 net/ipv6/addrconf.c:6163
 ipv6_ifa_notify net/ipv6/addrconf.c:6202 [inline]
 add_addr+0x237/0x350 net/ipv6/addrconf.c:3108
 init_loopback net/ipv6/addrconf.c:3191 [inline]
 addrconf_init_auto_addrs+0xd7/0x8a0 net/ipv6/addrconf.c:3465
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88803cd95200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803cd95280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803cd95300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                       ^
 ffff88803cd95380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803cd95400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================