general protection fault, probably for non-canonical address 0xdffffc0000000015: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000a8-0x00000000000000af]
CPU: 1 PID: 26854 Comm: syz-executor.4 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kobject_get+0x30/0x150 lib/kobject.c:640
Code: 53 e8 f4 79 bc f9 4d 85 e4 0f 84 a2 00 00 00 e8 e6 79 bc f9 49 8d 7c 24 3c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 e7 00 00 00
RSP: 0018:ffffc90001857240 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffffffff8596f830 RCX: ffffc900121c6000
RDX: 0000000000000015 RSI: ffffffff87b598aa RDI: 00000000000000ac
RBP: 0000000000000070 R08: ffff88809256c5c0 R09: fffffbfff14cbdd9
R10: fffffbfff14cbdd8 R11: ffffffff8a65eec7 R12: 0000000000000070
R13: ffffc900018573c0 R14: ffff88805547c4d0 R15: ffff88805547c558
FS:  00007fec7e400700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020004b00 CR3: 00000000999c6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 get_device+0x20/0x30 drivers/base/core.c:2574
 __ib_get_client_nl_info+0x1d4/0x2a0 drivers/infiniband/core/device.c:1861
 ib_get_client_nl_info+0x30/0x180 drivers/infiniband/core/device.c:1881
 nldev_get_chardev+0x52b/0xa40 drivers/infiniband/core/nldev.c:1621
 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:195 [inline]
 rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
 rdma_nl_rcv+0x586/0x900 drivers/infiniband/core/netlink.c:259
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2343
 ___sys_sendmsg+0x100/0x170 net/socket.c:2397
 __sys_sendmsg+0xec/0x1b0 net/socket.c:2430
 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c679
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fec7e3ffc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fec7e4006d4 RCX: 000000000045c679
RDX: 0000000000000004 RSI: 0000000020004b00 RDI: 0000000000000003
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000009a2 R14: 00000000004d5a00 R15: 000000000076bf0c
Modules linked in:
---[ end trace 6a0a5b2197db1753 ]---
RIP: 0010:kobject_get+0x30/0x150 lib/kobject.c:640
Code: 53 e8 f4 79 bc f9 4d 85 e4 0f 84 a2 00 00 00 e8 e6 79 bc f9 49 8d 7c 24 3c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 e7 00 00 00
RSP: 0018:ffffc90001857240 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffffffff8596f830 RCX: ffffc900121c6000
RDX: 0000000000000015 RSI: ffffffff87b598aa RDI: 00000000000000ac
RBP: 0000000000000070 R08: ffff88809256c5c0 R09: fffffbfff14cbdd9
R10: fffffbfff14cbdd8 R11: ffffffff8a65eec7 R12: 0000000000000070
R13: ffffc900018573c0 R14: ffff88805547c4d0 R15: ffff88805547c558
FS:  00007fec7e400700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000175de80 CR3: 00000000999c6000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400