bisecting fixing commit since 958e517f4e16952e9a2e2d58fd32d28ae4e23dda
building syzkaller on 6a81331a1d4c744da9204d02ec88d558f7eea9c9
testing commit 958e517f4e16952e9a2e2d58fd32d28ae4e23dda with gcc (GCC) 8.4.1 20210217
kernel signature: f60abc7085d5e5e84adf8fbe975b7d36f25ad95960b9ad65ffbce7fbc334c9f1
all runs: crashed: general protection fault in rdma_listen
testing current HEAD 7d7d1c0ab3eb7c8d8f63a126535018007823b207
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 with gcc (GCC) 8.4.1 20210217
kernel signature: 38ed36844d6097e512e627313b56872a902819f1bae9fb9c613db0e5668653b9
all runs: crashed: general protection fault in rdma_listen
revisions tested: 2, total time: 26m13.034649844s (build: 19m1.292095838s, test: 6m37.470594901s)
the crash still happens on HEAD
commit msg: Linux 4.14.232
crash: general protection fault in rdma_listen
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 9844 Comm: syz-executor.5 Not tainted 4.14.232-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880b3e06480 task.stack: ffff8880a0188000
RIP: 0010:cma_bind_listen drivers/infiniband/core/cma.c:3205 [inline]
RIP: 0010:rdma_listen+0x24d/0x750 drivers/infiniband/core/cma.c:3318
RSP: 0018:ffff8880a018fb00 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880b48ce4c0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff87cc8280 RDI: 0000000000000008
RBP: ffff8880a018fb30 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8880a018faf0 R11: ffff8880b3e06480 R12: 0000000000000000
R13: 0000000000000400 R14: ffff8880a018fc48 R15: ffff8880b3e06480
FS:  00007fabceda6700(0000) GS:ffff8880ba700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000b4edd000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_listen+0xde/0x140 drivers/infiniband/core/ucma.c:1078
 ucma_write+0x1f1/0x2c0 drivers/infiniband/core/ucma.c:1672
 __vfs_write+0xdb/0x840 fs/read_write.c:480
 vfs_write+0x150/0x4f0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0x100/0x250 fs/read_write.c:582
 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x466459
RSP: 002b:00007fabceda6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466459
RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007fffd676ef5f R14: 00007fabceda6300 R15: 0000000000022000
Code: 4c 8b a3 c0 01 00 00 31 f6 48 c7 c7 a0 39 b4 89 e8 89 41 de 01 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3a 04 00 00 48 b8 00 00 00 00 00 fc ff df 4d 
RIP: cma_bind_listen drivers/infiniband/core/cma.c:3205 [inline] RSP: ffff8880a018fb00
RIP: rdma_listen+0x24d/0x750 drivers/infiniband/core/cma.c:3318 RSP: ffff8880a018fb00
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
---[ end trace aab0818f16688750 ]---
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout