Kernel callback slot table overflowed

Apr 9 17:05:30 nfs-client kernel: Callback slot table overflowed Apr 9 17:05:30 nfs-client kernel: Callback slot table overflowed ... The job I had that was writing to this NFS file system showed a 35 second gap (matches the grace time):

EulerOS : kernel (EulerOS-SA-2019-1525) | Tenable® According to the versions of the kernel packages ... (API operation calling its own callback, ... was found in the Linux kernel in xt_alloc_table_info, ... System Error Codes (500-999) - Windows applications ... The user/kernel marshalling buffer has overflowed. ERROR ... ERROR_PNP_BAD_MPS_TABLE. 671 ... An exception occurred in a user mode callback and the kernel callback ...

The issue seems to be the invocation of block layer API (generic_make_request) from the softirq context which is actually the callback of another IO or a XOR operation. Apparently, the callbacks are being invoked in timer context, as it's seen from the call stack, which is an interrupt and we cannot sleep in interrupt context, hence the bug.

.:: Phrack Magazine ::. Interrupt descriptor table under OpenBSD is named _idt_region and slot number: 0x80 is the gate descriptor for the system call interrupt 'int 0x80'. Since every member is 8 bytes, system call gate_descriptor is at address '_idt_region + 0x …

draft-ietf-nfsv4-sess-02 - NFSv4 Session Extensions

May 13, 2019 ... The Kernel application has all the code necessary to run the Erlang runtime system: file .... Logger calls the handler callback only if all filters attached to the handler ...... enfile - File table overflow ...... ebadslt - Invalid slot. R2: An Application-Level Kernel for Record and Replay - Usenix R2: An Application-Level Kernel for Record and Replay. ... Table 1: Annotation keywords (for data transfer, execution order, and .... Syscalls may register callback functions, which we call upcalls, that are .... For example, there is a slot for recording, one for replay, etc. ...... Modular checking for buffer overflows in the large. Linux Inside Jan 11, 2019 ... How the Linux kernel handles a system call vsyscall and vDSO ...... then search in the. Global Descriptor Table(GDT) otherwise it will look in Local Descriptor Table(LDT). ...... memory regions to the slots array: ...... handle stack overflow here ...... file_operations.open callback function for a certain filesystem.

cdn.kernel.org

Also frees up the pte that was previously inserted into the kernel page table and discards the UTLB ... Flushes TLB slot slot. ... void maple_getcond_callback ... add/remove static route from route table by LINUX KERNEL ... I'm working on a project, that I am implementing via kernel-mode module in Linux, at some callback (inside the kernel) I need to modify routing table, for example I ... Persistent changes to /proc/sys/sunrpc/tcp_slot_table_entries Persistent changes to /proc/sys/sunrpc/tcp ... /sbin/sysctl -w sunrpc.tcp_slot_table_entries=128 ... it was still not being set out since the sunrpc kernel module was ...