slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 __do_kmalloc mm/slab.c:3716 [inline]
 __kmalloc+0x2c8/0x760 mm/slab.c:3727
kasan: CONFIG_KASAN_INLINE enabled
 kmalloc include/linux/slab.h:517 [inline]
 sock_kmalloc+0x14e/0x1d0 net/core/sock.c:1996
 ip_mc_source+0xf71/0x12b0 net/ipv4/igmp.c:2348
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
 do_ip_setsockopt.isra.13+0x32a6/0x3e50 net/ipv4/ip_sockglue.c:1074
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 11596 Comm: syz-executor0 Not tainted 4.17.0-rc4+ #50
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:smc_tx_prepared_sends net/smc/smc_tx.h:27 [inline]
RIP: 0010:smc_ioctl+0x6db/0x9f0 net/smc/af_smc.c:1506
RSP: 0018:ffff8801b1977770 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000004 RSI: 1ffff1003632ef0d RDI: 0000000000000020
RBP: ffff8801b19779d0 R08: ffffed003632ef0e R09: ffffed003632ef0d
R10: ffffed003632ef0d R11: ffff8801b197786f R12: 1ffff1003632eef1
R13: 00000000200006c0 R14: ffff8801b1977868 R15: ffff8801b1977828
FS:  00007fc1c3dae700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200005c0 CR3: 00000001a8d5c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 ip_setsockopt+0x47/0xf0 net/ipv4/ip_sockglue.c:1246
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 udp_setsockopt+0x62/0xa0 net/ipv4/udp.c:2487
Call Trace:
 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3046
 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903
 __do_sys_setsockopt net/socket.c:1914 [inline]
 __se_sys_setsockopt net/socket.c:1911 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 sock_do_ioctl+0xe4/0x3e0 net/socket.c:957
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a09
 sock_ioctl+0x30d/0x680 net/socket.c:1081
RSP: 002b:00007f21c6307c68 EFLAGS: 00000246
 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f21c63086d4 RCX: 0000000000455a09
RDX: 000000000000002e RSI: 0000000000000000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000108 R09: 0000000000000000
R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000015
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x1cf/0x16a0 fs/ioctl.c:684
R13: 0000000000000622 R14: 00000000006fd3d0 R15: 0000000000000000
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701
 __do_sys_ioctl fs/ioctl.c:708 [inline]
 __se_sys_ioctl fs/ioctl.c:706 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a09
RSP: 002b:00007fc1c3dadc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
RAX: ffffffffffffffda RBX: 00007fc1c3dae6d4 RCX: 0000000000455a09
RDX: 00000000200006c0 RSI: 000000000000894b RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000044c R14: 00000000006fa7c0 R15: 0000000000000000
Code: f8 48 
CPU: 0 PID: 11608 Comm: syz-executor4 Not tainted 4.17.0-rc4+ #50
c1 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
e8 
Call Trace:
03 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
80 
3c 
10 
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
00 
0f 
85 
ed 
01 
00 
00 
48 
8b 
9b 
90 
04 
00 
00 
48 
b8 
00 
00 
00 
00 
00 
fc 
ff 
df 
 __should_failslab+0x124/0x180 mm/failslab.c:32
48 
 should_failslab+0x9/0x14 mm/slab_common.c:1522
8d 
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x4b/0x780 mm/slab.c:3618
7b 
20 
48 
 kmalloc include/linux/slab.h:512 [inline]
 kzalloc include/linux/slab.h:701 [inline]
 ip_mc_add1_src net/ipv4/igmp.c:1944 [inline]
 ip_mc_add_src+0xda8/0x1210 net/ipv4/igmp.c:2068
89 
fa 
48 
c1 
ea 
03 
 ip_mc_source+0xb98/0x12b0 net/ipv4/igmp.c:2380
<0f> 
b6 
04 
02 
84 
 do_ip_setsockopt.isra.13+0x32a6/0x3e50 net/ipv4/ip_sockglue.c:1074
c0 
74 
08 3c 
03 
0f 
8e 
b7 
01 
00 
00 
8b 
43 
20 
49 
8d 
RIP: smc_tx_prepared_sends net/smc/smc_tx.h:27 [inline] RSP: ffff8801b1977770
RIP: smc_ioctl+0x6db/0x9f0 net/smc/af_smc.c:1506 RSP: ffff8801b1977770
---[ end trace a17bf1cd3623c7fc ]---