Nathan Lynch f413135b33 powerpc/rtas: avoid scheduling in rtas_os_term() ... [ Upstream commit 6c606e57ee ] It's unsafe to use rtas_busy_delay() to handle a busy status from the ibm,os-term RTAS function in rtas_os_term(): Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b BUG: sleeping function called from invalid context at arch/powerpc/kernel/rtas.c:618 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1, name: swapper/0 preempt_count: 2, expected: 0 CPU: 7 PID: 1 Comm: swapper/0 Tainted: G D 6.0.0-rc5-02182-gf8553a572277-dirty #9 Call Trace: [c000000007b8f000] [c000000001337110] dump_stack_lvl+0xb4/0x110 (unreliable) [c000000007b8f040] [c0000000002440e4] __might_resched+0x394/0x3c0 [c000000007b8f0e0] [c00000000004f680] rtas_busy_delay+0x120/0x1b0 [c000000007b8f100] [c000000000052d04] rtas_os_term+0xb8/0xf4 [c000000007b8f180] [c0000000001150fc] pseries_panic+0x50/0x68 [c000000007b8f1f0] [c000000000036354] ppc_panic_platform_handler+0x34/0x50 [c000000007b8f210] [c0000000002303c4] notifier_call_chain+0xd4/0x1c0 [c000000007b8f2b0] [c0000000002306cc] atomic_notifier_call_chain+0xac/0x1c0 [c000000007b8f2f0] [c0000000001d62b8] panic+0x228/0x4d0 [c000000007b8f390] [c0000000001e573c] do_exit+0x140c/0x1420 [c000000007b8f480] [c0000000001e586c] make_task_dead+0xdc/0x200 Use rtas_busy_delay_time() instead, which signals without side effects whether to attempt the ibm,os-term RTAS call again. Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221118150751.469393-5-nathanl@linux.ibm.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-01-07 12:07:34 +01:00
..
boot	powerpc: Fix SPE Power ISA properties for e500v1 platforms	2022-10-26 13:15:44 +02:00
configs	vgacon: remove software scrollback support	2020-09-23 08:46:13 +02:00
crypto	crypto: hash - annotate algorithms taking optional key	2018-02-25 11:05:43 +01:00
include	powerpc/powernv: wire up rng during setup_arch	2022-07-07 17:30:10 +02:00
kernel	powerpc/rtas: avoid scheduling in rtas_os_term()	2023-01-07 12:07:34 +01:00
kvm	KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow	2021-07-28 09:14:28 +02:00
lib	powerpc/32: Fix boot failure with GCC latent entropy plugin	2022-02-08 18:15:27 +01:00
math-emu	powerpc/math_emu/efp: Include module.h	2022-10-26 13:15:44 +02:00
mm	powerpc: Allow 4224 bytes of stack expansion for the signal frame	2020-08-26 10:29:06 +02:00
net	powerpc/bpf: Fix BPF_SUB when imm == 0x80000000	2021-11-26 11:48:39 +01:00
oprofile	…
perf	powerpc/hv-gpci: Fix hv_gpci event list	2023-01-07 12:07:28 +01:00
platforms	powerpc/83xx/mpc832x_rdb: call platform_device_put() in error case in of_fsl_spi_probe()	2023-01-07 12:07:28 +01:00
scripts	…
sysdev	powerpc/fsl-pci: Fix Class Code of PCIe Root Port	2022-08-25 11:09:25 +02:00
xmon	powerpc/xmon: Change printk() to pr_cont()	2020-12-29 13:45:05 +01:00
Kconfig	powerpc/47x: Disable 256k page size	2021-03-03 17:44:37 +01:00
Kconfig.debug	powerpc: iommu: fix build when neither PCI or IBMVIO is set	2021-05-22 10:40:27 +02:00
Makefile	powerpc: vdso: Make vdso32 installation conditional in vdso_install	2020-01-29 10:24:21 +01:00
relocs_check.sh	…