junhua huang 60f07e22a7 arm64:uprobe fix the uprobe SWBP_INSN in big-endian ... We use uprobe in aarch64_be, which we found the tracee task would exit due to SIGILL when we enable the uprobe trace. We can see the replace inst from uprobe is not correct in aarch big-endian. As in Armv8-A, instruction fetches are always treated as little-endian, we should treat the UPROBE_SWBP_INSN as little-endian。 The test case is as following。 bash-4.4# ./mqueue_test_aarchbe 1 1 2 1 10 > /dev/null & bash-4.4# cd /sys/kernel/debug/tracing/ bash-4.4# echo 'p:test /mqueue_test_aarchbe:0xc30 %x0 %x1' > uprobe_events bash-4.4# echo 1 > events/uprobes/enable bash-4.4# bash-4.4# ps PID TTY TIME CMD 140 ? 00:00:01 bash 237 ? 00:00:00 ps [1]+ Illegal instruction ./mqueue_test_aarchbe 1 1 2 1 100 > /dev/null which we debug use gdb as following: bash-4.4# gdb attach 155 (gdb) disassemble send Dump of assembler code for function send: 0x0000000000400c30 <+0>: .inst 0xa00020d4 ; undefined 0x0000000000400c34 <+4>: mov x29, sp 0x0000000000400c38 <+8>: str w0, [sp, #28] 0x0000000000400c3c <+12>: strb w1, [sp, #27] 0x0000000000400c40 <+16>: str xzr, [sp, #40] 0x0000000000400c44 <+20>: str xzr, [sp, #48] 0x0000000000400c48 <+24>: add x0, sp, #0x1b 0x0000000000400c4c <+28>: mov w3, #0x0 // #0 0x0000000000400c50 <+32>: mov x2, #0x1 // #1 0x0000000000400c54 <+36>: mov x1, x0 0x0000000000400c58 <+40>: ldr w0, [sp, #28] 0x0000000000400c5c <+44>: bl 0x405e10 <mq_send> 0x0000000000400c60 <+48>: str w0, [sp, #60] 0x0000000000400c64 <+52>: ldr w0, [sp, #60] 0x0000000000400c68 <+56>: ldp x29, x30, [sp], #64 0x0000000000400c6c <+60>: ret End of assembler dump. (gdb) info b No breakpoints or watchpoints. (gdb) c Continuing. Program received signal SIGILL, Illegal instruction. 0x0000000000400c30 in send () (gdb) x/10x 0x400c30 0x400c30 <send>: 0xd42000a0 0xfd030091 0xe01f00b9 0xe16f0039 0x400c40 <send+16>: 0xff1700f9 0xff1b00f9 0xe06f0091 0x03008052 0x400c50 <send+32>: 0x220080d2 0xe10300aa (gdb) disassemble 0x400c30 Dump of assembler code for function send: => 0x0000000000400c30 <+0>: .inst 0xa00020d4 ; undefined 0x0000000000400c34 <+4>: mov x29, sp 0x0000000000400c38 <+8>: str w0, [sp, #28] 0x0000000000400c3c <+12>: strb w1, [sp, #27] 0x0000000000400c40 <+16>: str xzr, [sp, #40] Signed-off-by: junhua huang <huang.junhua@zte.com.cn> Link: https://lore.kernel.org/r/202212021511106844809@zte.com.cn Signed-off-by: Will Deacon <will@kernel.org>		2022-12-05 14:03:09 +00:00
..
boot	Armv8 Juno fix for v6.1	2022-11-02 21:58:46 +01:00
configs	This update includes the following changes:	2022-10-10 13:04:25 -07:00
crypto	This update includes the following changes:	2022-10-10 13:04:25 -07:00
hyperv	hyperv: simplify and rename generate_guest_id	2022-09-28 13:36:56 +00:00
include	arm64:uprobe fix the uprobe SWBP_INSN in big-endian	2022-12-05 14:03:09 +00:00
kernel	arm64: insn: simplify insn group identification	2022-11-15 13:07:44 +00:00
kvm	KVM: arm64: Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE	2022-11-01 15:56:52 +00:00
lib	arm64: insn: always inline hint generation	2022-11-15 13:07:44 +00:00
mm	arm64: efi: Recover from synchronous exceptions occurring in firmware	2022-11-03 18:01:15 +01:00
net	bpf: arm64: No support of struct argument in trampoline programs	2022-09-06 19:51:14 -07:00
tools	arm64/sysreg: Fix typo in SCTR_EL1.SPINTMASK	2022-10-07 14:30:11 +01:00
xen
Kbuild
Kconfig	arm64 fixes:	2022-10-14 12:38:03 -07:00
Kconfig.debug
Kconfig.platforms	ARM: SoC code changes for 6.1	2022-10-06 11:22:25 -07:00
Makefile	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00