=====================================================
BUG: KMSAN: uninit-value in receive_mergeable drivers/net/virtio_net.c:1847 [inline]
BUG: KMSAN: uninit-value in receive_buf+0x2620/0x6070 drivers/net/virtio_net.c:1973
 receive_mergeable drivers/net/virtio_net.c:1847 [inline]
 receive_buf+0x2620/0x6070 drivers/net/virtio_net.c:1973
 virtnet_receive drivers/net/virtio_net.c:2277 [inline]
 virtnet_poll+0xd1c/0x23c0 drivers/net/virtio_net.c:2380
 __napi_poll+0xe7/0x980 net/core/dev.c:6722
 napi_poll net/core/dev.c:6791 [inline]
 net_rx_action+0x82a/0x1850 net/core/dev.c:6907
 handle_softirqs+0x1ce/0x800 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0x68/0x120 kernel/softirq.c:637
 irq_exit_rcu+0x12/0x20 kernel/softirq.c:649
 common_interrupt+0x94/0xa0 arch/x86/kernel/irq.c:278
 asm_common_interrupt+0x2b/0x40 arch/x86/include/asm/idtentry.h:693
 __msan_metadata_ptr_for_load_8+0x31/0x40 mm/kmsan/instrumentation.c:92
 tomoyo_get_name+0x237/0xce0 security/tomoyo/memory.c:167
 tomoyo_parse_name_union+0x2af/0x3c0 security/tomoyo/util.c:260
 tomoyo_update_path_acl security/tomoyo/file.c:395 [inline]
 tomoyo_write_file+0x626/0x1d40 security/tomoyo/file.c:1022
 tomoyo_write_domain2 security/tomoyo/common.c:1144 [inline]
 tomoyo_add_entry security/tomoyo/common.c:2034 [inline]
 tomoyo_supervisor+0x24a0/0x25c0 security/tomoyo/common.c:2095
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_check_open_permission+0x5d2/0xc50 security/tomoyo/file.c:777
 tomoyo_file_open+0x271/0x360 security/tomoyo/tomoyo.c:334
 security_file_open+0x9a/0xc60 security/security.c:2962
 do_dentry_open+0x5bb/0x1e10 fs/open.c:946
 vfs_open+0x56/0x5a0 fs/open.c:1089
 do_open fs/namei.c:3727 [inline]
 path_openat+0x540e/0x6100 fs/namei.c:3886
 do_filp_open+0x20e/0x590 fs/namei.c:3913
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1442
 x64_sys_call+0x120e/0x3b90 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_pages_noprof+0x9d6/0xe70 mm/page_alloc.c:4706
 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265
 alloc_pages_noprof+0x1bf/0x1e0 mm/mempolicy.c:2336
 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2920
 virtnet_rq_alloc+0x43/0xbb0 drivers/net/virtio_net.c:882
 add_recvbuf_mergeable drivers/net/virtio_net.c:2128 [inline]
 try_fill_recv+0x3f0/0x2f50 drivers/net/virtio_net.c:2173
 virtnet_open+0x1cc/0xb00 drivers/net/virtio_net.c:2452
 __dev_open+0x546/0x6f0 net/core/dev.c:1472
 __dev_change_flags+0x309/0x9a0 net/core/dev.c:8781
 dev_change_flags+0x8e/0x1d0 net/core/dev.c:8853
 devinet_ioctl+0x13ec/0x22c0 net/ipv4/devinet.c:1177
 inet_ioctl+0x4bd/0x6d0 net/ipv4/af_inet.c:1003
 sock_do_ioctl+0xb7/0x540 net/socket.c:1222
 sock_ioctl+0x727/0xd70 net/socket.c:1341
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x261/0x450 fs/ioctl.c:893
 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:893
 x64_sys_call+0x18bf/0x3b90 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 PID: 4776 Comm: ssh-keygen Not tainted 6.10.0-syzkaller-02324-gf83e38fc9f10 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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