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
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <elfutils/libdwfl.h>
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#include "../../util/unwind-libdw.h"
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#include "../../util/perf_regs.h"
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#include "../../util/event.h"
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bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
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{
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struct unwind_info *ui = arg;
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struct regs_dump *user_regs = &ui->sample->user_regs;
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Dwarf_Word dwarf_regs[PERF_REG_ARM64_MAX], dwarf_pc;
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#define REG(r) ({ \
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Dwarf_Word val = 0; \
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perf_reg_value(&val, user_regs, PERF_REG_ARM64_##r); \
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val; \
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})
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dwarf_regs[0] = REG(X0);
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dwarf_regs[1] = REG(X1);
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dwarf_regs[2] = REG(X2);
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dwarf_regs[3] = REG(X3);
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dwarf_regs[4] = REG(X4);
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dwarf_regs[5] = REG(X5);
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dwarf_regs[6] = REG(X6);
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dwarf_regs[7] = REG(X7);
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dwarf_regs[8] = REG(X8);
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dwarf_regs[9] = REG(X9);
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dwarf_regs[10] = REG(X10);
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dwarf_regs[11] = REG(X11);
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dwarf_regs[12] = REG(X12);
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dwarf_regs[13] = REG(X13);
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dwarf_regs[14] = REG(X14);
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dwarf_regs[15] = REG(X15);
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dwarf_regs[16] = REG(X16);
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dwarf_regs[17] = REG(X17);
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dwarf_regs[18] = REG(X18);
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dwarf_regs[19] = REG(X19);
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dwarf_regs[20] = REG(X20);
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dwarf_regs[21] = REG(X21);
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dwarf_regs[22] = REG(X22);
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dwarf_regs[23] = REG(X23);
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dwarf_regs[24] = REG(X24);
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dwarf_regs[25] = REG(X25);
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dwarf_regs[26] = REG(X26);
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dwarf_regs[27] = REG(X27);
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dwarf_regs[28] = REG(X28);
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dwarf_regs[29] = REG(X29);
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dwarf_regs[30] = REG(LR);
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dwarf_regs[31] = REG(SP);
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if (!dwfl_thread_state_registers(thread, 0, PERF_REG_ARM64_MAX,
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dwarf_regs))
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return false;
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dwarf_pc = REG(PC);
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dwfl_thread_state_register_pc(thread, dwarf_pc);
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return true;
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}
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