16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
116 lines
2 KiB
C
116 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <errno.h>
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#ifndef REMOTE_UNWIND_LIBUNWIND
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#include <libunwind.h>
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#include "perf_regs.h"
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#include "../../util/unwind.h"
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#include "../../util/debug.h"
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#endif
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#ifdef HAVE_ARCH_X86_64_SUPPORT
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int LIBUNWIND__ARCH_REG_ID(int regnum)
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{
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int id;
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switch (regnum) {
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case UNW_X86_64_RAX:
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id = PERF_REG_X86_AX;
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break;
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case UNW_X86_64_RDX:
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id = PERF_REG_X86_DX;
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break;
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case UNW_X86_64_RCX:
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id = PERF_REG_X86_CX;
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break;
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case UNW_X86_64_RBX:
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id = PERF_REG_X86_BX;
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break;
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case UNW_X86_64_RSI:
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id = PERF_REG_X86_SI;
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break;
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case UNW_X86_64_RDI:
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id = PERF_REG_X86_DI;
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break;
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case UNW_X86_64_RBP:
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id = PERF_REG_X86_BP;
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break;
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case UNW_X86_64_RSP:
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id = PERF_REG_X86_SP;
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break;
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case UNW_X86_64_R8:
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id = PERF_REG_X86_R8;
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break;
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case UNW_X86_64_R9:
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id = PERF_REG_X86_R9;
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break;
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case UNW_X86_64_R10:
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id = PERF_REG_X86_R10;
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break;
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case UNW_X86_64_R11:
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id = PERF_REG_X86_R11;
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break;
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case UNW_X86_64_R12:
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id = PERF_REG_X86_R12;
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break;
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case UNW_X86_64_R13:
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id = PERF_REG_X86_R13;
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break;
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case UNW_X86_64_R14:
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id = PERF_REG_X86_R14;
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break;
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case UNW_X86_64_R15:
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id = PERF_REG_X86_R15;
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break;
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case UNW_X86_64_RIP:
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id = PERF_REG_X86_IP;
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break;
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default:
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pr_err("unwind: invalid reg id %d\n", regnum);
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return -EINVAL;
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}
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return id;
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}
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#else
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int LIBUNWIND__ARCH_REG_ID(int regnum)
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{
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int id;
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switch (regnum) {
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case UNW_X86_EAX:
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id = PERF_REG_X86_AX;
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break;
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case UNW_X86_EDX:
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id = PERF_REG_X86_DX;
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break;
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case UNW_X86_ECX:
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id = PERF_REG_X86_CX;
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break;
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case UNW_X86_EBX:
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id = PERF_REG_X86_BX;
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break;
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case UNW_X86_ESI:
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id = PERF_REG_X86_SI;
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break;
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case UNW_X86_EDI:
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id = PERF_REG_X86_DI;
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break;
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case UNW_X86_EBP:
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id = PERF_REG_X86_BP;
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break;
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case UNW_X86_ESP:
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id = PERF_REG_X86_SP;
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break;
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case UNW_X86_EIP:
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id = PERF_REG_X86_IP;
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break;
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default:
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pr_err("unwind: invalid reg id %d\n", regnum);
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return -EINVAL;
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}
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return id;
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}
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#endif /* HAVE_ARCH_X86_64_SUPPORT */
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