From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Vasily Gorbik <gor@linux.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: [PATCH 5.4 30/85] lib/crc32test: remove extra local_irq_disable/enable
Date: Mon, 9 Nov 2020 13:55:27 +0100 [thread overview]
Message-ID: <20201109125024.034824347@linuxfoundation.org> (raw)
In-Reply-To: <20201109125022.614792961@linuxfoundation.org>
From: Vasily Gorbik <gor@linux.ibm.com>
commit aa4e460f0976351fddd2f5ac6e08b74320c277a1 upstream.
Commit 4d004099a668 ("lockdep: Fix lockdep recursion") uncovered the
following issue in lib/crc32test reported on s390:
BUG: using __this_cpu_read() in preemptible [00000000] code: swapper/0/1
caller is lockdep_hardirqs_on_prepare+0x48/0x270
CPU: 6 PID: 1 Comm: swapper/0 Not tainted 5.9.0-next-20201015-15164-g03d992bd2de6 #19
Hardware name: IBM 3906 M04 704 (LPAR)
Call Trace:
lockdep_hardirqs_on_prepare+0x48/0x270
trace_hardirqs_on+0x9c/0x1b8
crc32_test.isra.0+0x170/0x1c0
crc32test_init+0x1c/0x40
do_one_initcall+0x40/0x130
do_initcalls+0x126/0x150
kernel_init_freeable+0x1f6/0x230
kernel_init+0x22/0x150
ret_from_fork+0x24/0x2c
no locks held by swapper/0/1.
Remove extra local_irq_disable/local_irq_enable helpers calls.
Fixes: 5fb7f87408f1 ("lib: add module support to crc32 tests")
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lkml.kernel.org/r/patch.git-4369da00c06e.your-ad-here.call-01602859837-ext-1679@work.hours
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/crc32test.c | 4 ----
1 file changed, 4 deletions(-)
--- a/lib/crc32test.c
+++ b/lib/crc32test.c
@@ -683,7 +683,6 @@ static int __init crc32c_test(void)
/* reduce OS noise */
local_irq_save(flags);
- local_irq_disable();
nsec = ktime_get_ns();
for (i = 0; i < 100; i++) {
@@ -694,7 +693,6 @@ static int __init crc32c_test(void)
nsec = ktime_get_ns() - nsec;
local_irq_restore(flags);
- local_irq_enable();
pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
@@ -768,7 +766,6 @@ static int __init crc32_test(void)
/* reduce OS noise */
local_irq_save(flags);
- local_irq_disable();
nsec = ktime_get_ns();
for (i = 0; i < 100; i++) {
@@ -783,7 +780,6 @@ static int __init crc32_test(void)
nsec = ktime_get_ns() - nsec;
local_irq_restore(flags);
- local_irq_enable();
pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
CRC_LE_BITS, CRC_BE_BITS);
next prev parent reply other threads:[~2020-11-09 13:28 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-09 12:54 [PATCH 5.4 00/85] 5.4.76-rc1 review Greg Kroah-Hartman
2020-11-09 12:54 ` [PATCH 5.4 01/85] drm/i915: Break up error capture compression loops with cond_resched() Greg Kroah-Hartman
2020-11-09 12:54 ` [PATCH 5.4 02/85] drm/i915/gt: Delay execlist processing for tgl Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 03/85] drm/i915: Drop runtime-pm assert from vgpu io accessors Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 04/85] ASoC: Intel: Skylake: Add alternative topology binary name Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 05/85] linkage: Introduce new macros for assembler symbols Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 06/85] arm64: asm: Add new-style position independent function annotations Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 07/85] arm64: lib: Use modern annotations for assembly functions Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 08/85] arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 09/85] tipc: fix use-after-free in tipc_bcast_get_mode Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 10/85] ptrace: fix task_join_group_stop() for the case when current is traced Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 11/85] cadence: force nonlinear buffers to be cloned Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 12/85] chelsio/chtls: fix memory leaks caused by a race Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 13/85] chelsio/chtls: fix always leaking ctrl_skb Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 14/85] gianfar: Replace skb_realloc_headroom with skb_cow_head for PTP Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 15/85] gianfar: Account for Tx PTP timestamp in the skb headroom Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 16/85] ionic: check port ptr before use Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 17/85] ip_tunnel: fix over-mtu packet send fail without TUNNEL_DONT_FRAGMENT flags Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 18/85] net: usb: qmi_wwan: add Telit LE910Cx 0x1230 composition Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 19/85] powerpc/vnic: Extend "failover pending" window Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 20/85] sctp: Fix COMM_LOST/CANT_STR_ASSOC err reporting on big-endian platforms Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 21/85] sfp: Fix error handing in sfp_probe() Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 22/85] Fonts: Replace discarded const qualifier Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 23/85] ALSA: hda/realtek - Fixed HP headset Mic cant be detected Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 24/85] ALSA: hda/realtek - Enable headphone for ASUS TM420 Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 25/85] ALSA: usb-audio: Add implicit feedback quirk for Zoom UAC-2 Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 26/85] ALSA: usb-audio: add usb vendor id as DSD-capable for Khadas devices Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 27/85] ALSA: usb-audio: Add implicit feedback quirk for Qu-16 Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 28/85] ALSA: usb-audio: Add implicit feedback quirk for MODX Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 29/85] mm: mempolicy: fix potential pte_unmap_unlock pte error Greg Kroah-Hartman
2020-11-09 12:55 ` Greg Kroah-Hartman [this message]
2020-11-09 12:55 ` [PATCH 5.4 31/85] kthread_worker: prevent queuing delayed work from timer_fn when it is being canceled Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 32/85] mm: always have io_remap_pfn_range() set pgprot_decrypted() Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 33/85] gfs2: Wake up when sd_glock_disposal becomes zero Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 34/85] ring-buffer: Fix recursion protection transitions between interrupt context Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 35/85] mtd: spi-nor: Dont copy self-pointing struct around Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 36/85] ftrace: Fix recursion check for NMI test Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 37/85] ftrace: Handle tracing when switching between context Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 38/85] regulator: defer probe when trying to get voltage from unresolved supply Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 39/85] spi: bcm2835: fix gpio cs level inversion Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 40/85] tracing: Fix out of bounds write in get_trace_buf Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 41/85] futex: Handle transient "ownerless" rtmutex state correctly Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 42/85] ARM: dts: sun4i-a10: fix cpu_alert temperature Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 43/85] arm64: dts: meson: add missing g12 rng clock Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 44/85] x86/kexec: Use up-to-dated screen_info copy to fill boot params Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 45/85] of: Fix reserved-memory overlap detection Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 46/85] drm/sun4i: frontend: Rework a bit the phase data Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 47/85] drm/sun4i: frontend: Reuse the ch0 phase for RGB formats Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 48/85] drm/sun4i: frontend: Fix the scaler phase on A33 Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 49/85] blk-cgroup: Fix memleak on error path Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 50/85] blk-cgroup: Pre-allocate tree node on blkg_conf_prep Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 51/85] scsi: core: Dont start concurrent async scan on same host Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 52/85] drm/amdgpu: add DID for navi10 blockchain SKU Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 53/85] scsi: ibmvscsi: Fix potential race after loss of transport Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 54/85] vsock: use ns_capable_noaudit() on socket create Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 55/85] nvme-rdma: handle unexpected nvme completion data length Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 56/85] nvmet: fix a NULL pointer dereference when tracing the flush command Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 57/85] drm/vc4: drv: Add error handding for bind Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 58/85] ACPI: NFIT: Fix comparison to -ENXIO Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 59/85] usb: cdns3: gadget: suspicious implicit sign extension Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 60/85] drm/nouveau/nouveau: fix the start/end range for migration Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 61/85] drm/nouveau/gem: fix "refcount_t: underflow; use-after-free" Greg Kroah-Hartman
2020-11-09 12:55 ` [PATCH 5.4 62/85] arm64/smp: Move rcu_cpu_starting() earlier Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 63/85] Revert "coresight: Make sysfs functional on topologies with per core sink" Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 64/85] vt: Disable KD_FONT_OP_COPY Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 65/85] fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 66/85] s390/pkey: fix paes selftest failure with paes and pkey static build Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 67/85] serial: 8250_mtk: Fix uart_get_baud_rate warning Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 68/85] serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 69/85] USB: serial: cyberjack: fix write-URB completion race Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 70/85] USB: serial: option: add Quectel EC200T module support Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 71/85] USB: serial: option: add LE910Cx compositions 0x1203, 0x1230, 0x1231 Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 72/85] USB: serial: option: add Telit FN980 composition 0x1055 Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 73/85] tty: serial: fsl_lpuart: add LS1028A support Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 74/85] tty: serial: fsl_lpuart: LS1021A has a FIFO size of 16 words, like LS1028A Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 75/85] usb: dwc3: ep0: Fix delay status handling Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 76/85] USB: Add NO_LPM quirk for Kingston flash drive Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 77/85] usb: mtu3: fix panic in mtu3_gadget_stop() Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 78/85] drm/panfrost: Fix a deadlock between the shrinker and madvise path Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 79/85] ARC: stack unwinding: avoid indefinite looping Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 80/85] PM: runtime: Drop runtime PM references to supplier on link removal Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 81/85] PM: runtime: Drop pm_runtime_clean_up_links() Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 82/85] PM: runtime: Resume the device earlier in __device_release_driver() Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 83/85] xfs: flush for older, xfs specific ioctls Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 84/85] perf/core: Fix a memory leak in perf_event_parse_addr_filter() Greg Kroah-Hartman
2020-11-09 12:56 ` [PATCH 5.4 85/85] arm64: dts: marvell: espressobin: Add ethernet switch aliases Greg Kroah-Hartman
2020-11-09 15:44 ` [PATCH 5.4 00/85] 5.4.76-rc1 review Jon Hunter
2020-11-09 23:05 ` Guenter Roeck
2020-11-09 23:22 ` Shuah Khan
2020-11-10 4:14 ` Naresh Kamboju
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