general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 29309 Comm: syz-executor.0 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:cma_bind_listen drivers/infiniband/core/cma.c:3488 [inline]
RIP: 0010:rdma_listen+0x2dc/0x970 drivers/infiniband/core/cma.c:3602
Code: 8b ac 24 c8 01 00 00 31 f6 48 c7 c7 80 2e 5d 8a e8 f9 ad 32 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d6 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffffc90001d27c20 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008
RBP: ffffc90001d27c58 R08: 1ffffffff14ba5d1 R09: fffffbfff14ba5d2
R10: ffffc90001d27c10 R11: ffffffff8a5d2e8b R12: ffff8880a4b79000
R13: 0000000000000000 R14: 0000000000000400 R15: 0000000000000007
FS:  0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000f5ceeb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002e722000 CR3: 000000005435a000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_listen+0x14d/0x1c0 drivers/infiniband/core/ucma.c:1092
 ucma_write+0x2d7/0x3c0 drivers/infiniband/core/ucma.c:1684
 __vfs_write+0x8a/0x110 fs/read_write.c:494
 vfs_write+0x268/0x5d0 fs/read_write.c:558
 ksys_write+0x220/0x290 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __ia32_sys_write+0x71/0xb0 fs/read_write.c:620
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f14e39
Code: 1d 00 00 00 89 d3 5b 5e 5d c3 8b 04 24 c3 8b 1c 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5cee0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000020000040
RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 0f06d7d3e9ccdd47 ]---
RIP: 0010:cma_bind_listen drivers/infiniband/core/cma.c:3488 [inline]
RIP: 0010:rdma_listen+0x2dc/0x970 drivers/infiniband/core/cma.c:3602
Code: 8b ac 24 c8 01 00 00 31 f6 48 c7 c7 80 2e 5d 8a e8 f9 ad 32 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d6 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffffc90001d27c20 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008
RBP: ffffc90001d27c58 R08: 1ffffffff14ba5d1 R09: fffffbfff14ba5d2
R10: ffffc90001d27c10 R11: ffffffff8a5d2e8b R12: ffff8880a4b79000
R13: 0000000000000000 R14: 0000000000000400 R15: 0000000000000007
FS:  0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:00000000f5ceeb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008131f08 CR3: 000000005435a000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400