list_add corruption. prev->next should be next (ffffffff8a1b8ec0), but was 800000009b078007. (prev=ffff88808c4f25e0).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:26!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
kobject: 'loop1' (0000000018460ac6): kobject_uevent_env
CPU: 1 PID: 31269 Comm: syz-executor4 Not tainted 5.0.0-rc3 #35
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 a0 b3 81 88 e8 39 48 d7 fd 0f 0b 48 89 f1 48 c7 c7 20 b3 81 88 4c 89 e6 e8 25 48 d7 fd <0f> 0b 4c 89 f6 48 c7 c7 c0 b4 81 88 e8 14 48 d7 fd 0f 0b 4c 89 ea
RSP: 0018:ffff888042e3f9b0 EFLAGS: 00010286
RAX: 0000000000000075 RBX: 1ffff110085c7f3e RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81685456 RDI: ffffed10085c7f28
kobject: 'loop1' (0000000018460ac6): fill_kobj_path: path = '/devices/virtual/block/loop1'
RBP: ffff888042e3f9c8 R08: 0000000000000075 R09: ffffed1015cc5021
R10: ffffed1015cc5020 R11: ffff8880ae628107 R12: ffffffff8a1b8ec0
R13: ffff88805233e3a0 R14: ffff88805233e3a0 R15: ffff888042e3fa50
FS:  00007f5d66470700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9bd1eba330 CR3: 0000000088af7000 CR4: 00000000001406e0
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+0x6c9/0xa10 drivers/infiniband/core/cma.c:3492
kobject: 'loop3' (00000000ef1a35cc): kobject_uevent_env
 ucma_listen+0x1bf/0x250 drivers/infiniband/core/ucma.c:1100
kobject: 'loop3' (00000000ef1a35cc): fill_kobj_path: path = '/devices/virtual/block/loop3'
 ucma_write+0x36b/0x480 drivers/infiniband/core/ucma.c:1689
kobject: 'loop5' (00000000cd8bdd07): kobject_uevent_env
 __vfs_write+0x116/0xb40 fs/read_write.c:485
kobject: 'loop5' (00000000cd8bdd07): fill_kobj_path: path = '/devices/virtual/block/loop5'
 vfs_write+0x20c/0x580 fs/read_write.c:549
 ksys_write+0x105/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
kobject: 'loop5' (00000000cd8bdd07): kobject_uevent_env
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5d6646fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
kobject: 'loop5' (00000000cd8bdd07): fill_kobj_path: path = '/devices/virtual/block/loop5'
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458099
RDX: 0000000000000010 RSI: 0000000020000080 RDI: 0000000000000007
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d664706d4
R13: 00000000004c71fe R14: 00000000004dca18 R15: 00000000ffffffff
Modules linked in:
kobject: 'loop3' (00000000ef1a35cc): kobject_uevent_env
kobject: 'loop3' (00000000ef1a35cc): fill_kobj_path: path = '/devices/virtual/block/loop3'
---[ end trace 36d61c42afce3523 ]---
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 a0 b3 81 88 e8 39 48 d7 fd 0f 0b 48 89 f1 48 c7 c7 20 b3 81 88 4c 89 e6 e8 25 48 d7 fd <0f> 0b 4c 89 f6 48 c7 c7 c0 b4 81 88 e8 14 48 d7 fd 0f 0b 4c 89 ea
RSP: 0018:ffff888042e3f9b0 EFLAGS: 00010286
RAX: 0000000000000075 RBX: 1ffff110085c7f3e RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81685456 RDI: ffffed10085c7f28
RBP: ffff888042e3f9c8 R08: 0000000000000075 R09: ffffed1015cc5021
R10: ffffed1015cc5020 R11: ffff8880ae628107 R12: ffffffff8a1b8ec0
R13: ffff88805233e3a0 R14: ffff88805233e3a0 R15: ffff888042e3fa50
FS:  00007f5d66470700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd7a3bcd3c CR3: 0000000088af7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400