fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x8c0/0xa40 lib/fault-inject.c:149
WARNING: CPU: 0 PID: 32192 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70 mm/slab_common.c:1012
Kernel panic - not syncing: panic_on_warn set ...

 should_fail_alloc_page mm/page_alloc.c:2959 [inline]
 prepare_alloc_pages mm/page_alloc.c:4198 [inline]
 __alloc_pages_nodemask+0x327/0xdd0 mm/page_alloc.c:4237
 alloc_pages_current+0xb6/0x1e0 mm/mempolicy.c:2055
 alloc_pages include/linux/gfp.h:492 [inline]
 skb_page_frag_refill+0x358/0x5f0 net/core/sock.c:2208
 sk_page_frag_refill+0x53/0x1d0 net/core/sock.c:2228
 tcp_sendmsg_locked+0xebb/0x3c70 net/ipv4/tcp.c:1341
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1463
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:764
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:640
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2046
 __sys_sendmsg+0xe5/0x210 net/socket.c:2080
 C_SYSC_sendmsg net/compat.c:739 [inline]
 compat_SyS_sendmsg+0x2a/0x40 net/compat.c:737
 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fbcc99
RSP: 002b:00000000f77b809c EFLAGS: 00000286 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 0000000020351000
RDX: 0000000000040001 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 32192 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #253
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x24d lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986
RIP: 0010:kmalloc_slab+0x5d/0x70 mm/slab_common.c:1012
RSP: 0018:ffff8801b68c7920 EFLAGS: 00010246
RAX: 0000000000000000 RBX: fffffffffffffff4 RCX: ffffffff819733cb
RDX: ffffffff8423372f RSI: 0000000000000000 RDI: 000000003efef4b4
RBP: ffff8801b68c7920 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff88613380 R11: 0000000000000000 R12: 000000003efef4b4
R13: 0000000020000080 R14: 00000000014200c0 R15: ffff8801b68c7a18
 __do_kmalloc mm/slab.c:3700 [inline]
 __kmalloc_track_caller+0x21/0x760 mm/slab.c:3720
 memdup_user+0x2c/0x90 mm/util.c:160
 ucma_set_option+0x11f/0x4d0 drivers/infiniband/core/ucma.c:1297
 ucma_write+0x2d6/0x3d0 drivers/infiniband/core/ucma.c:1627
 __vfs_write+0xef/0x970 fs/read_write.c:480
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fc5c99
RSP: 002b:00000000f77c109c EFLAGS: 00000286 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00000000200000c0
RDX: 00000000ffffff20 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..