==================================================================
BUG: KASAN: slab-out-of-bounds in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: slab-out-of-bounds in atomic_read include/asm-generic/atomic-instrumented.h:27 [inline]
BUG: KASAN: slab-out-of-bounds in refcount_read include/linux/refcount.h:147 [inline]
BUG: KASAN: slab-out-of-bounds in __refcount_add_not_zero include/linux/refcount.h:152 [inline]
BUG: KASAN: slab-out-of-bounds in __refcount_inc_not_zero include/linux/refcount.h:227 [inline]
BUG: KASAN: slab-out-of-bounds in refcount_inc_not_zero include/linux/refcount.h:245 [inline]
BUG: KASAN: slab-out-of-bounds in sk_psock_get+0x123/0x410 include/linux/skmsg.h:449
Read of size 4 at addr ffff888052da8838 by task syz-executor.4/32259

CPU: 1 PID: 32259 Comm: syz-executor.4 Not tainted 5.14.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105
 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:233
 __kasan_report mm/kasan/report.c:419 [inline]
 kasan_report.cold+0x83/0xdf mm/kasan/report.c:436
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 atomic_read include/asm-generic/atomic-instrumented.h:27 [inline]
 refcount_read include/linux/refcount.h:147 [inline]
 __refcount_add_not_zero include/linux/refcount.h:152 [inline]
 __refcount_inc_not_zero include/linux/refcount.h:227 [inline]
 refcount_inc_not_zero include/linux/refcount.h:245 [inline]
 sk_psock_get+0x123/0x410 include/linux/skmsg.h:449
 tls_sw_recvmsg+0x19e/0x1670 net/tls/tls_sw.c:1761
 inet_recvmsg+0x11b/0x5e0 net/ipv4/af_inet.c:852
 sock_recvmsg_nosec net/socket.c:943 [inline]
 sock_recvmsg net/socket.c:961 [inline]
 sock_recvmsg net/socket.c:957 [inline]
 ____sys_recvmsg+0x2c4/0x600 net/socket.c:2611
 ___sys_recvmsg+0x127/0x200 net/socket.c:2653
 do_recvmmsg+0x24d/0x6d0 net/socket.c:2747
 __sys_recvmmsg net/socket.c:2828 [inline]
 __do_sys_recvmmsg net/socket.c:2849 [inline]
 __se_sys_recvmmsg net/socket.c:2842 [inline]
 __x64_sys_recvmmsg+0x17d/0x260 net/socket.c:2842
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f165a148188 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 000000000000000a RSI: 00000000200030c0 RDI: 0000000000000006
RBP: 00000000004bfcc4 R08: 0000000020003340 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fff34d32a9f R14: 00007f165a148300 R15: 0000000000022000

Allocated by task 32259:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x84/0xa0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc_node mm/slub.c:2959 [inline]
 slab_alloc mm/slub.c:2967 [inline]
 kmem_cache_alloc+0x285/0x4a0 mm/slub.c:2972
 kmem_cache_zalloc include/linux/slab.h:711 [inline]
 kcm_attach net/kcm/kcmsock.c:1404 [inline]
 kcm_attach_ioctl net/kcm/kcmsock.c:1489 [inline]
 kcm_ioctl+0x7f1/0x1180 net/kcm/kcmsock.c:1695
 sock_do_ioctl+0xcb/0x2d0 net/socket.c:1094
 sock_ioctl+0x477/0x6a0 net/socket.c:1221
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Last potentially related work creation:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:348
 insert_work+0x48/0x370 kernel/workqueue.c:1332
 __queue_work+0x5c1/0xed0 kernel/workqueue.c:1498
 queue_work_on+0xee/0x110 kernel/workqueue.c:1525
 kcm_attach net/kcm/kcmsock.c:1465 [inline]
 kcm_attach_ioctl net/kcm/kcmsock.c:1489 [inline]
 kcm_ioctl+0xede/0x1180 net/kcm/kcmsock.c:1695
 sock_do_ioctl+0xcb/0x2d0 net/socket.c:1094
 sock_ioctl+0x477/0x6a0 net/socket.c:1221
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Second to last potentially related work creation:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:348
 insert_work+0x48/0x370 kernel/workqueue.c:1332
 __queue_work+0x5c1/0xed0 kernel/workqueue.c:1498
 queue_work_on+0xee/0x110 kernel/workqueue.c:1525
 kcm_attach net/kcm/kcmsock.c:1465 [inline]
 kcm_attach_ioctl net/kcm/kcmsock.c:1489 [inline]
 kcm_ioctl+0xede/0x1180 net/kcm/kcmsock.c:1695
 sock_do_ioctl+0xcb/0x2d0 net/socket.c:1094
 sock_ioctl+0x477/0x6a0 net/socket.c:1221
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

The buggy address belongs to the object at ffff888052da8580
 which belongs to the cache kcm_psock_cache of size 568
The buggy address is located 128 bytes to the right of
 568-byte region [ffff888052da8580, ffff888052da87b8)
The buggy address belongs to the page:
page:ffffea00014b6a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888052dab180 pfn:0x52da8
head:ffffea00014b6a00 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888147712780
raw: ffff888052dab180 0000000080170010 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 29452, ts 1478996361646, free_ts 1478289377887
 prep_new_page mm/page_alloc.c:2436 [inline]
 get_page_from_freelist+0xa72/0x2f80 mm/page_alloc.c:4169
 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5391
 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2244
 alloc_slab_page mm/slub.c:1691 [inline]
 allocate_slab+0x32e/0x4b0 mm/slub.c:1831
 new_slab mm/slub.c:1894 [inline]
 new_slab_objects mm/slub.c:2640 [inline]
 ___slab_alloc+0x4ba/0x820 mm/slub.c:2803
 __slab_alloc.constprop.0+0xa7/0xf0 mm/slub.c:2843
 slab_alloc_node mm/slub.c:2925 [inline]
 slab_alloc mm/slub.c:2967 [inline]
 kmem_cache_alloc+0x3e1/0x4a0 mm/slub.c:2972
 kmem_cache_zalloc include/linux/slab.h:711 [inline]
 kcm_attach net/kcm/kcmsock.c:1404 [inline]
 kcm_attach_ioctl net/kcm/kcmsock.c:1489 [inline]
 kcm_ioctl+0x7f1/0x1180 net/kcm/kcmsock.c:1695
 sock_do_ioctl+0xcb/0x2d0 net/socket.c:1094
 sock_ioctl+0x477/0x6a0 net/socket.c:1221
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1346 [inline]
 free_pcp_prepare+0x2c5/0x780 mm/page_alloc.c:1397
 free_unref_page_prepare mm/page_alloc.c:3332 [inline]
 free_unref_page+0x19/0x690 mm/page_alloc.c:3411
 unfreeze_partials+0x17c/0x1d0 mm/slub.c:2421
 put_cpu_partial+0x13d/0x230 mm/slub.c:2457
 qlink_free mm/kasan/quarantine.c:146 [inline]
 qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
 __kasan_slab_alloc+0x8e/0xa0 mm/kasan/common.c:444
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc_node mm/slub.c:2959 [inline]
 slab_alloc mm/slub.c:2967 [inline]
 kmem_cache_alloc+0x285/0x4a0 mm/slub.c:2972
 getname_flags.part.0+0x50/0x4f0 fs/namei.c:138
 getname_flags include/linux/audit.h:319 [inline]
 getname+0x8e/0xd0 fs/namei.c:209
 do_sys_openat2+0xf5/0x420 fs/open.c:1198
 do_sys_open fs/open.c:1220 [inline]
 __do_sys_open fs/open.c:1228 [inline]
 __se_sys_open fs/open.c:1224 [inline]
 __x64_sys_open+0x119/0x1c0 fs/open.c:1224
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Memory state around the buggy address:
 ffff888052da8700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888052da8780: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
>ffff888052da8800: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
                                        ^
 ffff888052da8880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888052da8900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================