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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
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
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
acpi_safe_halt+0x25/0x30 drivers/acpi/processor_idle.c:112
acpi_idle_do_entry+0x22/0x40 drivers/acpi/processor_idle.c:573
acpi_idle_enter+0xa1/0xc0 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0xcb/0x250 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x7f/0xf0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x551/0x750 kernel/sched/idle.c:332
cpu_startup_entry+0x65/0x80 kernel/sched/idle.c:430
rest_init+0x1e8/0x260 init/main.c:747
start_kernel+0x92c/0xa70 init/main.c:1103
x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x98/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x12c/0x137
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+0x18c0/0x3b90 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: 0 Comm: swapper/0 Not tainted 6.10.0-rc6-syzkaller-00048-g73e931504f8e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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