==================================================================
BUG: KMSAN: uninit-value in do_slab_free mm/slub.c:2985 [inline]
BUG: KMSAN: uninit-value in slab_free mm/slub.c:3008 [inline]
BUG: KMSAN: uninit-value in kmem_cache_free+0x682/0x2b70 mm/slub.c:3023
CPU: 1 PID: 14380 Comm: syz-executor.5 Not tainted 5.0.0-rc1+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x173/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:600
 __msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313
 do_slab_free mm/slub.c:2985 [inline]
 slab_free mm/slub.c:3008 [inline]
 kmem_cache_free+0x682/0x2b70 mm/slub.c:3023
 sk_prot_free net/core/sock.c:1512 [inline]
 __sk_destruct+0x8ce/0x970 net/core/sock.c:1596
 sk_destruct net/core/sock.c:1604 [inline]
 __sk_free+0x5af/0x640 net/core/sock.c:1615
 sk_free net/core/sock.c:1626 [inline]
 sock_put include/net/sock.h:1707 [inline]
 sk_common_release+0x2fc/0x4d0 net/core/sock.c:3042
 rawv6_close+0xd9/0x110 net/ipv6/raw.c:1236
 inet_release+0x162/0x2a0 net/ipv4/af_inet.c:428
 inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:461
 __sock_release net/socket.c:579 [inline]
 sock_close+0x13f/0x400 net/socket.c:1141
 __fput+0x4d1/0xbb0 fs/file_table.c:278
 ____fput+0x37/0x40 fs/file_table.c:309
 task_work_run+0x22e/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:166 [inline]
 prepare_exit_to_usermode+0x321/0x420 arch/x86/entry/common.c:197
 syscall_return_slowpath+0xb2/0x650 arch/x86/entry/common.c:268
 do_syscall_64+0xe2/0xf0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x411d31
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 94 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:0000000000a4fd90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411d31
RDX: 0000000000000000 RSI: 00000000007411a0 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000741198 R09: 000000000005fc6a
R10: 0000000000a4fcb0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000058 R15: 0000000000000005

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:205 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:220 [inline]
 kmsan_internal_chain_origin+0x134/0x230 mm/kmsan/kmsan.c:426
 __msan_chain_origin+0x70/0xe0 mm/kmsan/kmsan_instr.c:200
 ___slab_alloc+0x1d41/0x2060 mm/slub.c:2604
 __slab_alloc mm/slub.c:2657 [inline]
 slab_alloc_node mm/slub.c:2720 [inline]
 slab_alloc mm/slub.c:2762 [inline]
 kmem_cache_alloc+0xae8/0xb60 mm/slub.c:2767
 sk_prot_alloc+0xf1/0x500 net/core/sock.c:1471
 sk_alloc+0xde/0xb90 net/core/sock.c:1531
 inet6_create+0x72c/0x1600 net/ipv6/af_inet6.c:183
 __sock_create+0x65f/0xf30 net/socket.c:1277
 sock_create net/socket.c:1317 [inline]
 __sys_socket+0x174/0x640 net/socket.c:1347
 __do_sys_socket net/socket.c:1356 [inline]
 __se_sys_socket+0x8d/0xb0 net/socket.c:1354
 __x64_sys_socket+0x4a/0x70 net/socket.c:1354
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Uninit was created at:
 kmsan_save_stack_with_flags+0x7a/0x130 mm/kmsan/kmsan.c:205
 kmsan_internal_alloc_meta_for_pages+0x113/0x580 mm/kmsan/kmsan_hooks.c:98
 kmsan_alloc_page+0x7e/0x100 mm/kmsan/kmsan_hooks.c:396
 __alloc_pages_nodemask+0x137b/0x5e30 mm/page_alloc.c:4572
 alloc_pages_current+0x69d/0x9b0 mm/mempolicy.c:2106
 alloc_pages include/linux/gfp.h:511 [inline]
 alloc_slab_page mm/slub.c:1492 [inline]
 allocate_slab mm/slub.c:1637 [inline]
 new_slab+0x3c6/0x20b0 mm/slub.c:1711
 new_slab_objects mm/slub.c:2465 [inline]
 ___slab_alloc+0x1577/0x2060 mm/slub.c:2617
 __slab_alloc mm/slub.c:2657 [inline]
 slab_alloc_node mm/slub.c:2720 [inline]
 slab_alloc mm/slub.c:2762 [inline]
 kmem_cache_alloc+0xae8/0xb60 mm/slub.c:2767
 sk_prot_alloc+0xf1/0x500 net/core/sock.c:1471
 sk_alloc+0xde/0xb90 net/core/sock.c:1531
 inet6_create+0x72c/0x1600 net/ipv6/af_inet6.c:183
 __sock_create+0x65f/0xf30 net/socket.c:1277
 sock_create net/socket.c:1317 [inline]
 __sys_socket+0x174/0x640 net/socket.c:1347
 __do_sys_socket net/socket.c:1356 [inline]
 __se_sys_socket+0x8d/0xb0 net/socket.c:1354
 __x64_sys_socket+0x4a/0x70 net/socket.c:1354
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
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