RDMA/core: Silence oversized kvmalloc() warning

In the Linux kernel, the following vulnerability has been resolved:

RDMA/core: Silence oversized kvmalloc() warning

syzkaller triggered an oversized kvmalloc() warning.

Silence it by adding __GFP_NOWARN.

syzkaller log:

WARNING: CPU: 7 PID: 518 at mm/util.c:665 __kvmalloc_node_noprof+0x175/0x180

CPU: 7 UID: 0 PID: 518 Comm: c_repro Not tainted 6.11.0-rc6+ #6

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014

RIP: 0010:__kvmalloc_node_noprof+0x175/0x180

RSP: 0018:ffffc90001e67c10 EFLAGS: 00010246

RAX: 0000000000000100 RBX: 0000000000000400 RCX: ffffffff8149d46b

RDX: 0000000000000000 RSI: ffff8881030fae80 RDI: 0000000000000002

RBP: 000000712c800000 R08: 0000000000000100 R09: 0000000000000000

R10: ffffc90001e67c10 R11: 0030ae0601000000 R12: 0000000000000000

R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000

FS: 00007fde79159740(0000) GS:ffff88813bdc0000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000000020000180 CR3: 0000000105eb4005 CR4: 00000000003706b0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Call Trace:

<TASK>

ib_umem_odp_get+0x1f6/0x390

mlx5_ib_reg_user_mr+0x1e8/0x450

ib_uverbs_reg_mr+0x28b/0x440

ib_uverbs_write+0x7d3/0xa30

vfs_write+0x1ac/0x6c0

ksys_write+0x134/0x170

? __sanitizer_cov_trace_pc+0x1c/0x50

do_syscall_64+0x50/0x110

entry_SYSCALL_64_after_hwframe+0x76/0x7e