list_add corruption. prev->next should be next (ffffffff891c4420), but was 0000000000000000. (prev=ffff888080cbb820).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:26!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 27691 Comm: syz-executor.4 Not tainted 5.0.0-rc7+ #84
kobject: 'loop5' (000000001641ef23): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid.cold+0x3a/0x3c lib/list_debug.c:26
Code: 0b 48 89 f2 4c 89 e1 4c 89 ee 48 c7 c7 c0 43 a2 87 e8 09 74 2f fe 0f 0b 48 89 f1 48 c7 c7 40 43 a2 87 4c 89 e6 e8 f5 73 2f fe <0f> 0b 4c 89 f6 48 c7 c7 e0 44 a2 87 e8 e4 73 2f fe 0f 0b 4c 89 ea
kobject: 'loop5' (000000001641ef23): fill_kobj_path: path = '/devices/virtual/block/loop5'
RSP: 0018:ffff888091a4fa50 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffff888081ba1730 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815a92c6 RDI: ffffed1012349f3c
RBP: ffff888091a4fa68 R08: 0000000000000075 R09: ffffed1015d05021
R10: ffffed1015d05020 R11: ffff8880ae828107 R12: ffffffff891c4420
R13: ffff888081ba1560 R14: ffff888081ba1560 R15: 0000000000000000
FS:  00007f31a6d90700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000017cec48 CR3: 00000000a1358000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:60 [inline]
 list_add_tail include/linux/list.h:93 [inline]
 cma_listen_on_all drivers/infiniband/core/cma.c:2477 [inline]
 rdma_listen+0x63b/0x8e0 drivers/infiniband/core/cma.c:3492
 ucma_listen+0x14d/0x1c0 drivers/infiniband/core/ucma.c:1100
 ucma_write+0x2da/0x3c0 drivers/infiniband/core/ucma.c:1689
 do_loop_readv_writev fs/read_write.c:703 [inline]
 do_loop_readv_writev fs/read_write.c:687 [inline]
 do_iter_write fs/read_write.c:958 [inline]
 do_iter_write+0x4a5/0x610 fs/read_write.c:937
 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1001
 do_writev+0xf6/0x290 fs/read_write.c:1036
 __do_sys_writev fs/read_write.c:1109 [inline]
 __se_sys_writev fs/read_write.c:1106 [inline]
 __x64_sys_writev+0x75/0xb0 fs/read_write.c:1106
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e29
Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f31a6d8fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29
RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f31a6d906d4
R13: 00000000004c4960 R14: 00000000004dd118 R15: 00000000ffffffff
Modules linked in:
---[ end trace 602e7add7c9b7a9a ]---
kobject: 'loop3' (00000000cec585d1): kobject_uevent_env
kobject: 'loop3' (00000000cec585d1): fill_kobj_path: path = '/devices/virtual/block/loop3'
RIP: 0010:__list_add_valid.cold+0x3a/0x3c lib/list_debug.c:26
kobject: 'kvm' (0000000063ee5c22): kobject_uevent_env
Code: 0b 48 89 f2 4c 89 e1 4c 89 ee 48 c7 c7 c0 43 a2 87 e8 09 74 2f fe 0f 0b 48 89 f1 48 c7 c7 40 43 a2 87 4c 89 e6 e8 f5 73 2f fe <0f> 0b 4c 89 f6 48 c7 c7 e0 44 a2 87 e8 e4 73 2f fe 0f 0b 4c 89 ea
kobject: 'loop1' (00000000387778f5): kobject_uevent_env
kobject: 'loop1' (00000000387778f5): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (0000000063ee5c22): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000063ee5c22): kobject_uevent_env
kobject: 'loop0' (0000000065455427): kobject_uevent_env
RSP: 0018:ffff888091a4fa50 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffff888081ba1730 RCX: 0000000000000000
kobject: 'loop0' (0000000065455427): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'kvm' (0000000063ee5c22): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RDX: 0000000000000000 RSI: ffffffff815a92c6 RDI: ffffed1012349f3c
RBP: ffff888091a4fa68 R08: 0000000000000075 R09: ffffed1015d05021
kobject: 'kvm' (0000000063ee5c22): kobject_uevent_env
R10: ffffed1015d05020 R11: ffff8880ae828107 R12: ffffffff891c4420
kobject: 'kvm' (0000000063ee5c22): fill_kobj_path: path = '/devices/virtual/misc/kvm'
R13: ffff888081ba1560 R14: ffff888081ba1560 R15: 0000000000000000
kobject: 'loop0' (0000000065455427): kobject_uevent_env
kobject: 'loop0' (0000000065455427): fill_kobj_path: path = '/devices/virtual/block/loop0'
FS:  00007f31a6d90700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
kobject: 'loop0' (0000000065455427): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop0' (0000000065455427): fill_kobj_path: path = '/devices/virtual/block/loop0'
CR2: 000000000073c000 CR3: 00000000a1358000 CR4: 00000000001426f0
kobject: 'loop1' (00000000387778f5): kobject_uevent_env
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop1' (00000000387778f5): fill_kobj_path: path = '/devices/virtual/block/loop1'
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600