iwpm_register_pid: Unable to send a nlmsg (client = 2) infiniband syz1: RDMA CMA: cma_listen_on_dev, error -98 ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888047b51b58, owner = 0x0, curr 0xffff8880418b4980, list empty WARNING: kernel/locking/rwsem.c:1381 at __up_write kernel/locking/rwsem.c:1380 [inline], CPU#0: syz.0.0/5322 WARNING: kernel/locking/rwsem.c:1381 at up_write+0x2d6/0x410 kernel/locking/rwsem.c:1643, CPU#0: syz.0.0/5322 Modules linked in: CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__up_write kernel/locking/rwsem.c:1380 [inline] RIP: 0010:up_write+0x388/0x410 kernel/locking/rwsem.c:1643 Code: cc 8b 49 c7 c2 a0 ec cc 8b 4c 0f 44 d0 48 8b 7c 24 08 48 c7 c6 00 ef cc 8b 48 8b 14 24 4c 89 f1 4d 89 e0 4c 8b 4c 24 10 41 52 <67> 48 0f b9 3a 48 83 c4 08 e8 5a 33 0c 03 e9 67 fd ff ff 48 c7 c1 RSP: 0018:ffffc9000f1afd80 EFLAGS: 00010246 RAX: ffffffff8bccec80 RBX: ffff888047b51b58 RCX: ffff888047b51b58 RDX: 0000000000000000 RSI: ffffffff8bccef00 RDI: ffffffff90152590 RBP: ffff888047b51bb0 R08: 0000000000000000 R09: ffff8880418b4980 R10: ffffffff8bccec80 R11: ffffed1008f6a36d R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888047b51b58 R15: 1ffff11008f6a36c FS: 00007f16e9c7f6c0(0000) GS:ffff88808ca51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f16e9c3cfe8 CR3: 0000000043e94000 CR4: 0000000000352ef0 Call Trace: inode_unlock include/linux/fs.h:1038 [inline] end_dirop fs/namei.c:2947 [inline] end_creating include/linux/namei.h:126 [inline] end_creating_path fs/namei.c:4962 [inline] filename_symlinkat+0x222/0x410 fs/namei.c:5642 __do_sys_symlinkat fs/namei.c:5660 [inline] __se_sys_symlinkat+0x4e/0x2b0 fs/namei.c:5655 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f16e8d9c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f16e9c7efe8 EFLAGS: 00000246 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 00007f16e9016090 RCX: 00007f16e8d9c799 RDX: 00002000000003c0 RSI: 000000000000000b RDI: 0000200000000240 RBP: 00007f16e8e32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f16e9016128 R14: 00007f16e9016090 R15: 00007ffedc473f08 ---------------- Code disassembly (best guess): 0: cc int3 1: 8b 49 c7 mov -0x39(%rcx),%ecx 4: c2 a0 ec ret $0xeca0 7: cc int3 8: 8b 4c 0f 44 mov 0x44(%rdi,%rcx,1),%ecx c: d0 48 8b rorb $1,-0x75(%rax) f: 7c 24 jl 0x35 11: 08 48 c7 or %cl,-0x39(%rax) 14: c6 00 ef movb $0xef,(%rax) 17: cc int3 18: 8b 48 8b mov -0x75(%rax),%ecx 1b: 14 24 adc $0x24,%al 1d: 4c 89 f1 mov %r14,%rcx 20: 4d 89 e0 mov %r12,%r8 23: 4c 8b 4c 24 10 mov 0x10(%rsp),%r9 28: 41 52 push %r10 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 83 c4 08 add $0x8,%rsp 33: e8 5a 33 0c 03 call 0x30c3392 38: e9 67 fd ff ff jmp 0xfffffda4 3d: 48 rex.W 3e: c7 .byte 0xc7 3f: c1 .byte 0xc1