Unknown ioctl 1074311008
==================================================================
BUG: KMSAN: uninit-value in slab_alloc_node mm/slub.c:2749 [inline]
BUG: KMSAN: uninit-value in slab_alloc mm/slub.c:2799 [inline]
BUG: KMSAN: uninit-value in kmem_cache_alloc+0x4ed/0xd10 mm/slub.c:2804
CPU: 0 PID: 12033 Comm: syz-executor.1 Not tainted 5.3.0-rc7+ #0
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+0x191/0x1f0 lib/dump_stack.c:113
 kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109
 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:294
 slab_alloc_node mm/slub.c:2749 [inline]
 slab_alloc mm/slub.c:2799 [inline]
 kmem_cache_alloc+0x4ed/0xd10 mm/slub.c:2804
 skb_clone+0x326/0x5d0 net/core/skbuff.c:1448
 ip6_finish_output2+0x548/0x2670 net/ipv6/ip6_output.c:74
 ip6_fragment+0x2447/0x37d0 net/ipv6/ip6_output.c:858
 __ip6_finish_output+0x753/0x8f0 net/ipv6/ip6_output.c:140
 ip6_finish_output+0x2db/0x420 net/ipv6/ip6_output.c:152
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x5d3/0x720 net/ipv6/ip6_output.c:175
 dst_output include/net/dst.h:436 [inline]
 ip6_local_out+0x164/0x1d0 net/ipv6/output_core.c:179
 ip6_send_skb+0xfa/0x390 net/ipv6/ip6_output.c:1791
 udp_v6_send_skb+0x1763/0x1d50 net/ipv6/udp.c:1167
 udpv6_sendmsg+0x4315/0x4660 net/ipv6/udp.c:1464
 inet6_sendmsg+0x276/0x2e0 net/ipv6/af_inet6.c:576
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg net/socket.c:657 [inline]
 kernel_sendmsg+0x24a/0x440 net/socket.c:677
 sock_no_sendpage+0x205/0x2b0 net/core/sock.c:2730
 kernel_sendpage net/socket.c:3682 [inline]
 sock_sendpage+0x1f1/0x2e0 net/socket.c:935
 pipe_to_sendpage+0x342/0x470 fs/splice.c:449
 splice_from_pipe_feed fs/splice.c:500 [inline]
 __splice_from_pipe+0x484/0xe80 fs/splice.c:624
 splice_from_pipe fs/splice.c:659 [inline]
 generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:829
 do_splice_from fs/splice.c:848 [inline]
 direct_splice_actor+0x19e/0x200 fs/splice.c:1020
 splice_direct_to_actor+0x852/0x1130 fs/splice.c:975
 do_splice_direct+0x342/0x580 fs/splice.c:1063
 do_sendfile+0x1010/0x1d20 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1519 [inline]
 __se_sys_sendfile64+0x174/0x360 fs/read_write.c:1511
 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1511
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x459a09
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f22eb234c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459a09
RDX: 0000000020000040 RSI: 0000000000000008 RDI: 0000000000000007
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000a808 R11: 0000000000000246 R12: 00007f22eb2356d4
R13: 00000000004c71d6 R14: 00000000004dc9e0 R15: 00000000ffffffff

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:174 [inline]
 kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:332
 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190
 ___slab_alloc+0x1dbc/0x1fb0 mm/slub.c:2634
 __slab_alloc mm/slub.c:2687 [inline]
 slab_alloc_node mm/slub.c:2750 [inline]
 slab_alloc mm/slub.c:2799 [inline]
 kmem_cache_alloc+0xade/0xd10 mm/slub.c:2804
 skb_clone+0x326/0x5d0 net/core/skbuff.c:1448
 ip6_finish_output2+0x548/0x2670 net/ipv6/ip6_output.c:74
 ip6_fragment+0x2447/0x37d0 net/ipv6/ip6_output.c:858
 __ip6_finish_output+0x753/0x8f0 net/ipv6/ip6_output.c:140
 ip6_finish_output+0x2db/0x420 net/ipv6/ip6_output.c:152
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x5d3/0x720 net/ipv6/ip6_output.c:175
 dst_output include/net/dst.h:436 [inline]
 ip6_local_out+0x164/0x1d0 net/ipv6/output_core.c:179
 ip6_send_skb+0xfa/0x390 net/ipv6/ip6_output.c:1791
 udp_v6_send_skb+0x1763/0x1d50 net/ipv6/udp.c:1167
 udpv6_sendmsg+0x4315/0x4660 net/ipv6/udp.c:1464
 inet6_sendmsg+0x276/0x2e0 net/ipv6/af_inet6.c:576
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg net/socket.c:657 [inline]
 kernel_sendmsg+0x24a/0x440 net/socket.c:677
 sock_no_sendpage+0x205/0x2b0 net/core/sock.c:2730
 kernel_sendpage net/socket.c:3682 [inline]
 sock_sendpage+0x1f1/0x2e0 net/socket.c:935
 pipe_to_sendpage+0x342/0x470 fs/splice.c:449
 splice_from_pipe_feed fs/splice.c:500 [inline]
 __splice_from_pipe+0x484/0xe80 fs/splice.c:624
 splice_from_pipe fs/splice.c:659 [inline]
 generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:829
 do_splice_from fs/splice.c:848 [inline]
 direct_splice_actor+0x19e/0x200 fs/splice.c:1020
 splice_direct_to_actor+0x852/0x1130 fs/splice.c:975
 do_splice_direct+0x342/0x580 fs/splice.c:1063
 do_sendfile+0x1010/0x1d20 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1519 [inline]
 __se_sys_sendfile64+0x174/0x360 fs/read_write.c:1511
 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1511
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:174 [inline]
 kmsan_internal_poison_shadow+0x58/0xb0 mm/kmsan/kmsan.c:134
 kmsan_slab_free+0x8d/0x100 mm/kmsan/kmsan_hooks.c:123
 slab_free_freelist_hook mm/slub.c:1472 [inline]
 slab_free mm/slub.c:3038 [inline]
 kmem_cache_free_bulk+0x3ad9/0x3f50 mm/slub.c:3163
 __kfree_skb_flush+0xb0/0x100 net/core/skbuff.c:862
 net_rx_action+0x1908/0x1950 net/core/dev.c:6441
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq arch/x86/include/asm/apic.h:537 [inline]
 do_IRQ+0x20d/0x3a0 arch/x86/kernel/irq.c:259
 ret_from_intr+0x0/0x33
 jhash2 include/linux/jhash.h:125 [inline]
 hash_conntrack_raw+0x160/0x6d0 net/netfilter/nf_conntrack_core.c:199
 resolve_normal_ct net/netfilter/nf_conntrack_core.c:1547 [inline]
 nf_conntrack_in+0x986/0x2664 net/netfilter/nf_conntrack_core.c:1710
 ipv4_conntrack_local+0x1b7/0x300 net/netfilter/nf_conntrack_proto.c:200
 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline]
 nf_hook_slow+0x18b/0x3f0 net/netfilter/core.c:512
 nf_hook include/linux/netfilter.h:260 [inline]
 __ip_local_out+0x69b/0x800 net/ipv4/ip_output.c:114
 ip_local_out net/ipv4/ip_output.c:123 [inline]
 __ip_queue_xmit+0x1bdc/0x21f0 net/ipv4/ip_output.c:532
 ip_queue_xmit+0xcc/0xf0 include/net/ip.h:236
 __tcp_transmit_skb+0x409e/0x5c60 net/ipv4/tcp_output.c:1158
 __tcp_send_ack+0x701/0x840 net/ipv4/tcp_output.c:3685
 tcp_send_ack+0x68/0x90 net/ipv4/tcp_output.c:3691
 tcp_cleanup_rbuf+0x764/0x800 net/ipv4/tcp.c:1575
 tcp_recvmsg+0x334d/0x4ff0 net/ipv4/tcp.c:2179
 inet_recvmsg+0x237/0x7d0 net/ipv4/af_inet.c:838
 sock_recvmsg_nosec net/socket.c:871 [inline]
 sock_recvmsg net/socket.c:889 [inline]
 sock_read_iter+0x5be/0x660 net/socket.c:967
 call_read_iter include/linux/fs.h:1864 [inline]
 new_sync_read fs/read_write.c:414 [inline]
 __vfs_read+0xa67/0xc90 fs/read_write.c:427
 vfs_read+0x359/0x6f0 fs/read_write.c:461
 ksys_read+0x265/0x430 fs/read_write.c:587
 __do_sys_read fs/read_write.c:597 [inline]
 __se_sys_read+0x92/0xb0 fs/read_write.c:595
 __x64_sys_read+0x4a/0x70 fs/read_write.c:595
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
==================================================================