==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1667 [inline]
BUG: KASAN: use-after-free in __down_read_trylock kernel/locking/rwsem.c:1309 [inline]
BUG: KASAN: use-after-free in down_read_trylock+0xb7/0x2c0 kernel/locking/rwsem.c:1571
Write of size 8 at addr ffff888118a84070 by task kworker/u4:11/17722

CPU: 1 PID: 17722 Comm: kworker/u4:11 Not tainted 5.15.94-syzkaller-03204-g5448b2fda85f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description+0x87/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:444
 kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1667 [inline]
 __down_read_trylock kernel/locking/rwsem.c:1309 [inline]
 down_read_trylock+0xb7/0x2c0 kernel/locking/rwsem.c:1571
 trylock_super+0x1f/0xf0 fs/super.c:418
 __writeback_inodes_wb+0x101/0x3f0 fs/fs-writeback.c:1967
 wb_writeback+0x3cd/0x9e0 fs/fs-writeback.c:2081
 wb_check_background_flush fs/fs-writeback.c:2147 [inline]
 wb_do_writeback fs/fs-writeback.c:2235 [inline]
 wb_workfn+0xc12/0x1110 fs/fs-writeback.c:2263
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2313
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2460
 kthread+0x421/0x510 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 <unknown>:298
 </TASK>

Allocated by task 21605:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:512
 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 kmem_cache_alloc_trace+0x115/0x210 mm/slub.c:3265
 kmalloc include/linux/slab.h:608 [inline]
 kzalloc include/linux/slab.h:738 [inline]
 alloc_super+0x5d/0x7d0 fs/super.c:203
 sget+0x1e5/0x4c0 fs/super.c:615
 mount_bdev+0xe6/0x3b0 fs/super.c:1342
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4562
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:610
 vfs_get_tree+0x88/0x290 fs/super.c:1499
 do_new_mount+0x28b/0xac0 fs/namespace.c:2994
 path_mount+0x671/0x1070 fs/namespace.c:3324
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3522
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Freed by task 60:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
 slab_free mm/slub.c:3517 [inline]
 kfree+0xc8/0x220 mm/slub.c:4577
 destroy_super_work+0x40/0x50 fs/super.c:165
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2313
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2460
 kthread+0x421/0x510 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 <unknown>:298

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 insert_work+0x56/0x320 kernel/workqueue.c:1369
 __queue_work+0x923/0xcd0 kernel/workqueue.c:1535
 queue_work_on+0x105/0x170 kernel/workqueue.c:1562
 queue_work include/linux/workqueue.h:507 [inline]
 schedule_work include/linux/workqueue.h:568 [inline]
 destroy_super_rcu+0xd1/0xe0 fs/super.c:172
 rcu_do_batch+0x57a/0xc10 kernel/rcu/tree.c:2509
 rcu_core+0x517/0x1020 kernel/rcu/tree.c:2749
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2762
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565

Second to last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu kernel/rcu/tree.c:2993 [inline]
 call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3073
 __put_super+0x26d/0x2e0 fs/super.c:299
 put_super fs/super.c:313 [inline]
 deactivate_locked_super+0xe1/0x110 fs/super.c:346
 deactivate_super+0xbe/0xf0 fs/super.c:366
 cleanup_mnt+0x45c/0x510 fs/namespace.c:1143
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150
 task_work_run+0x129/0x190 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:300
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff888118a84000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 112 bytes inside of
 2048-byte region [ffff888118a84000, ffff888118a84800)
The buggy address belongs to the page:
page:ffffea000462a000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118a80
head:ffffea000462a000 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043200
raw: 0000000000000000 0000000000080008 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5445, ts 347694935429, free_ts 347521534863
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2502
 prep_new_page mm/page_alloc.c:2508 [inline]
 get_page_from_freelist+0x2c14/0x2cf0 mm/page_alloc.c:4291
 __alloc_pages+0x386/0x7b0 mm/page_alloc.c:5569
 allocate_slab mm/slub.c:1930 [inline]
 new_slab+0x92/0x490 mm/slub.c:1993
 ___slab_alloc+0x39e/0x830 mm/slub.c:3026
 __slab_alloc+0x4a/0x90 mm/slub.c:3113
 slab_alloc_node mm/slub.c:3204 [inline]
 slab_alloc mm/slub.c:3246 [inline]
 __kmalloc+0x16d/0x270 mm/slub.c:4421
 kmalloc include/linux/slab.h:613 [inline]
 kzalloc include/linux/slab.h:738 [inline]
 __register_sysctl_table+0xea/0x1240 fs/proc/proc_sysctl.c:1321
 register_net_sysctl+0x21e/0x230 net/sysctl_net.c:169
 __addrconf_sysctl_register+0x28f/0x3e0 net/ipv6/addrconf.c:7087
 addrconf_sysctl_register+0x141/0x1a0 net/ipv6/addrconf.c:7134
 ipv6_add_dev+0xc84/0x1140 net/ipv6/addrconf.c:455
 addrconf_notify+0x593/0xdd0 net/ipv6/addrconf.c:3574
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2005 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2017 [inline]
 call_netdevice_notifiers+0x145/0x1b0 net/core/dev.c:2031
 register_netdevice+0xff1/0x1350 net/core/dev.c:10363
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1370 [inline]
 free_pcp_prepare mm/page_alloc.c:1442 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3441
 free_unref_page+0xac/0x2c0 mm/page_alloc.c:3521
 free_the_page mm/page_alloc.c:711 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5645
 __free_slab+0xec/0x1d0 mm/slub.c:2018
 free_slab mm/slub.c:2033 [inline]
 discard_slab mm/slub.c:2039 [inline]
 __unfreeze_partials+0x165/0x1a0 mm/slub.c:2525
 put_cpu_partial+0xc4/0x120 mm/slub.c:2605
 __slab_free+0x1c8/0x290 mm/slub.c:3386
 do_slab_free mm/slub.c:3505 [inline]
 ___cache_free+0x109/0x120 mm/slub.c:3524
 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x44/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3238 [inline]
 slab_alloc mm/slub.c:3246 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3251
 kmem_cache_alloc_node include/linux/slab.h:479 [inline]
 __alloc_skb+0xbe/0x550 net/core/skbuff.c:416
 alloc_skb include/linux/skbuff.h:1182 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 inet_netconf_notify_devconf+0x173/0x220 net/ipv4/devinet.c:2094

Memory state around the buggy address:
 ffff888118a83f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888118a83f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888118a84000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff888118a84080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888118a84100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================