AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers
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Emmanuel Nicolet 720bc31669 ps3disk: use the default segment boundary 
Since commit dcebd75592 ("block: use bio_for_each_bvec() to compute
multi-page bvec count"), the kernel will bug_on on the PS3 because
bio_split() is called with sectors == 0:

  kernel BUG at block/bio.c:1853!
  Oops: Exception in kernel mode, sig: 5 [#1]
  BE PAGE_SIZE=4K MMU=Hash PREEMPT SMP NR_CPUS=8 NUMA PS3
  Modules linked in: firewire_sbp2 rtc_ps3(+) soundcore ps3_gelic(+) \
  ps3rom(+) firewire_core ps3vram(+) usb_common crc_itu_t
  CPU: 0 PID: 97 Comm: blkid Not tainted 5.3.0-rc4 #1
  NIP:  c00000000027d0d0 LR: c00000000027d0b0 CTR: 0000000000000000
  REGS: c00000000135ae90 TRAP: 0700   Not tainted  (5.3.0-rc4)
  MSR:  8000000000028032 <SF,EE,IR,DR,RI>  CR: 44008240  XER: 20000000
  IRQMASK: 0
  GPR00: c000000000289368 c00000000135b120 c00000000084a500 c000000004ff8300
  GPR04: 0000000000000c00 c000000004c905e0 c000000004c905e0 000000000000ffff
  GPR08: 0000000000000000 0000000000000001 0000000000000000 000000000000ffff
  GPR12: 0000000000000000 c0000000008ef000 000000000000003e 0000000000080001
  GPR16: 0000000000000100 000000000000ffff 0000000000000000 0000000000000004
  GPR20: c00000000062fd7e 0000000000000001 000000000000ffff 0000000000000080
  GPR24: c000000000781788 c00000000135b350 0000000000000080 c000000004c905e0
  GPR28: c00000000135b348 c000000004ff8300 0000000000000000 c000000004c90000
  NIP [c00000000027d0d0] .bio_split+0x28/0xac
  LR [c00000000027d0b0] .bio_split+0x8/0xac
  Call Trace:
  [c00000000135b120] [c00000000027d130] .bio_split+0x88/0xac (unreliable)
  [c00000000135b1b0] [c000000000289368] .__blk_queue_split+0x11c/0x53c
  [c00000000135b2d0] [c00000000028f614] .blk_mq_make_request+0x80/0x7d4
  [c00000000135b3d0] [c000000000283a8c] .generic_make_request+0x118/0x294
  [c00000000135b4b0] [c000000000283d34] .submit_bio+0x12c/0x174
  [c00000000135b580] [c000000000205a44] .mpage_bio_submit+0x3c/0x4c
  [c00000000135b600] [c000000000206184] .mpage_readpages+0xa4/0x184
  [c00000000135b750] [c0000000001ff8fc] .blkdev_readpages+0x24/0x38
  [c00000000135b7c0] [c0000000001589f0] .read_pages+0x6c/0x1a8
  [c00000000135b8b0] [c000000000158c74] .__do_page_cache_readahead+0x118/0x184
  [c00000000135b9b0] [c0000000001591a8] .force_page_cache_readahead+0xe4/0xe8
  [c00000000135ba50] [c00000000014fc24] .generic_file_read_iter+0x1d8/0x830
  [c00000000135bb50] [c0000000001ffadc] .blkdev_read_iter+0x40/0x5c
  [c00000000135bbc0] [c0000000001b9e00] .new_sync_read+0x144/0x1a0
  [c00000000135bcd0] [c0000000001bc454] .vfs_read+0xa0/0x124
  [c00000000135bd70] [c0000000001bc7a4] .ksys_read+0x70/0xd8
  [c00000000135be20] [c00000000000a524] system_call+0x5c/0x70
  Instruction dump:
  7fe3fb78 482e30dc 7c0802a6 482e3085 7c9e2378 f821ff71 7ca42b78 7d3e00d0
  7c7d1b78 79290fe0 7cc53378 69290001 <0b090000> 81230028 7bca0020 7929ba62
  [ end trace 313fec760f30aa1f ]---

The problem originates from setting the segment boundary of the
request queue to -1UL. This makes get_max_segment_size() return zero
when offset is zero, whatever the max segment size. The test with
BLK_SEG_BOUNDARY_MASK fails and 'mask - (mask & offset) + 1' overflows
to zero in the return statement.

Not setting the segment boundary and using the default
value (BLK_SEG_BOUNDARY_MASK) fixes the problem.

Signed-off-by: Emmanuel Nicolet <emmanuel.nicolet@gmail.com>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/060a416c43138f45105c0540eff1a45539f7e2fc.1589049250.git.geoff@infradead.org
2020-05-19 00:10:35 +10:00
..
accessibility
acpi More ACPI updates for 5.7-rc1 2020-04-10 09:52:15 -07:00
amba Revert "amba: Initialize dma_parms for amba devices" 2020-04-01 08:03:28 +02:00
android
ata ahci: Add Intel Comet Lake PCH-U PCI ID 2020-04-16 10:26:52 -06:00
atm .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
auxdisplay
base mm/memory_hotplug: allow to specify a default online_type 2020-04-07 10:43:41 -07:00
bcma
block ps3disk: use the default segment boundary 2020-05-19 00:10:35 +10:00
bluetooth
bus ARM: driver updates 2020-04-03 15:05:35 -07:00
cdrom
char Merge branch 'akpm' (patches from Andrew) 2020-04-10 17:57:48 -07:00
clk clk: sprd: don't gate uart console clock 2020-04-13 12:20:07 -07:00
clocksource clocksource/drivers/timer-vf-pit: Add missing parenthesis 2020-04-05 09:24:58 +02:00
connector
counter
cpufreq Additional power management updates for 5.7-rc1 2020-04-06 10:14:39 -07:00
cpuidle powerpc/idle: Store PURR snapshot in a per-cpu global variable 2020-04-30 12:35:26 +10:00
crypto crypto/nx: Remove 'pid' in vas_tx_win_attr struct 2020-04-20 16:53:14 +10:00
dax dax: Move mandatory ->zero_page_range() check in alloc_dax() 2020-04-02 19:15:03 -07:00
dca
devfreq PM / devfreq: Fix handling dev_pm_qos_remove_request result 2020-03-25 08:35:03 +09:00
dio
dma drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings 2020-04-10 15:36:22 -07:00
dma-buf A bunch of fixes to avoid null pointer dereference in fbcon, fix a return 2020-04-08 09:14:34 +10:00
edac Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
eisa .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
extcon Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
firewire
firmware efi/libstub/file: Merge file name buffers to reduce stack usage 2020-04-14 08:32:15 +02:00
fpga
fsi
gnss
gpio This is the bulk of GPIO development for the v5.7 kernel cycle. 2020-04-04 10:27:00 -07:00
gpu Merge branch 'linux-5.7' of git://github.com/skeggsb/linux into drm-fixes 2020-04-16 15:40:02 +10:00
greybus
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2020-04-01 15:18:42 -07:00
hsi
hv hyperv-fixes for 5.7-rc1 2020-04-14 11:58:04 -07:00
hwmon hwmon: (jc42) Fix name to have no illegal characters 2020-04-18 10:13:07 -07:00
hwspinlock hwspinlock: hwspinlock_internal.h: Replace zero-length array with flexible-array member 2020-03-25 22:30:46 -07:00
hwtracing intel_th: msu: Make stopping the trace optional 2020-03-24 13:45:24 +01:00
i2c i2c: tegra: Synchronize DMA before termination 2020-04-15 18:27:31 +02:00
i3c i3c: convert to use i2c_new_client_device() 2020-03-29 10:35:50 +02:00
ide drivers/ide: Fix build regression. 2020-04-04 18:07:59 -07:00
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
iio chrome platform changes for 5.7 2020-04-08 21:25:49 -07:00
infiniband RDMA 5.7 pull request 2020-04-01 18:18:18 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-04-07 20:20:12 -07:00
interconnect
iommu Merge branches 'iommu/fixes', 'arm/qcom', 'arm/omap', 'arm/smmu', 'x86/amd', 'x86/vt-d', 'virtio' and 'core' into next 2020-03-27 11:33:27 +01:00
ipack
irqchip Merge branch 'irq/gic-v4.1-fixes-5.7' into irq/irqchip-5.7 2020-04-17 08:59:55 +01:00
isdn mISDN: make dmril and dmrim static 2020-04-16 13:52:31 -07:00
leds leds: core: Fix warning message when init_data 2020-04-06 23:12:08 +02:00
lightnvm for-5.7/drivers-2020-03-29 2020-03-30 11:43:51 -07:00
macintosh drivers/macintosh: Fix memleak in windfarm_pm112 driver 2020-05-15 11:58:56 +10:00
mailbox
mcb
md libnvdimm for 5.7 2020-04-08 21:03:40 -07:00
media Power management updates for 5.7-rc1 2020-03-30 15:05:01 -07:00
memory ARM: driver updates 2020-04-03 15:05:35 -07:00
memstick
message scsi: message: fusion: Replace zero-length array with flexible-array member 2020-03-26 22:40:47 -04:00
mfd mfd: intel-lpss: Fix Intel Elkhart Lake LPSS I2C input clock 2020-03-30 07:35:28 +01:00
misc virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
mmc MMC core: 2020-03-31 16:13:09 -07:00
most staging: most: move core files out of the staging area 2020-03-24 13:42:44 +01:00
mtd mtd: spi-nor: Compile files in controllers/ directory 2020-04-09 22:00:13 +02:00
mux
net net/ps3_gelic_net: Remove duplicate error message 2020-05-19 00:10:35 +10:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
ntb pci-v5.7-changes 2020-04-03 14:25:02 -07:00
nubus
nvdimm libnvdimm for 5.7 2020-04-08 21:03:40 -07:00
nvme block-5.7-2020-04-10 2020-04-10 10:06:54 -07:00
nvmem nvmem: core: remove nvmem_sysfs_get_groups() 2020-03-25 19:23:49 +01:00
of of: unittest: kmemleak in duplicate property update 2020-04-17 08:31:34 -05:00
opp opp: Manage empty OPP tables with clk handle 2020-04-13 16:14:55 +05:30
oprofile
parisc parisc: Replace setup_irq() by request_irq() 2020-04-05 22:05:23 +02:00
parport
pci IOMMU Updates for Linux v5.7 2020-04-08 11:00:00 -07:00
pcmcia pcmcia: remove some unused space characters 2020-03-31 18:48:22 +02:00
perf arm64 updates for 5.7: 2020-03-31 10:05:01 -07:00
phy pci-v5.7-changes 2020-04-03 14:25:02 -07:00
pinctrl This is the bulk of GPIO development for the v5.7 kernel cycle. 2020-04-04 10:27:00 -07:00
platform chrome-platform fixes for v5.7-rc2 2020-04-16 15:00:57 -07:00
pnp
power change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
pps
ps3 drivers/ps3: Remove duplicate error messages 2020-05-19 00:10:35 +10:00
ptp ptp: Avoid deadlocks in the programmable pin code. 2020-03-30 11:16:38 -07:00
pwm pwm: pca9685: Fix PWM/GPIO inter-operation 2020-04-03 21:41:42 +02:00
rapidio
ras
regulator spi/regulator: Updates for v5.7 2020-03-30 14:58:26 -07:00
remoteproc remoteproc/omap: Fix set_load call in omap_rproc_request_timer 2020-04-03 10:47:21 -07:00
reset
rpmsg
rtc - New Drivers 2020-04-07 19:48:52 -07:00
s390 s390/dasd: remove IOSCHED_DEADLINE from DASD Kconfig 2020-04-17 08:05:27 -06:00
sbus
scsi scsi: sg: add sg_remove_request in sg_common_write 2020-04-13 21:58:48 -04:00
sfi
sh
siox
slimbus
soc RISC-V Patches for the 5.7 Merge Window, Part 1 2020-04-09 10:51:30 -07:00
soundwire Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
spi sound updates for 5.7-rc1 2020-04-02 15:50:04 -07:00
spmi
ssb
staging mm/vma: introduce VM_ACCESS_FLAGS 2020-04-10 15:36:21 -07:00
target scsi: target: tcmu: reset_ring should reset TCMU_DEV_BIT_BROKEN 2020-04-13 14:03:20 -04:00
tc
tee ARM: driver updates 2020-04-03 15:05:35 -07:00
thermal - Convert tsens configuration DT binding to yaml (Rajeshwari) 2020-04-07 20:00:16 -07:00
thunderbolt
tty powerpc updates for 5.7 2020-04-05 11:12:59 -07:00
uio
usb SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
vdpa vdpa: move to drivers/vdpa 2020-04-02 10:41:40 -04:00
vfio drivers/powerpc: Replace _ALIGN_UP() by ALIGN() 2020-05-11 23:15:15 +10:00
vhost vhost: introduce vDPA-based backend 2020-04-02 10:41:40 -04:00
video drivers/powerpc: Replace _ALIGN_UP() by ALIGN() 2020-05-11 23:15:15 +10:00
virt
virtio virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
visorbus
vlynq
vme
w1
watchdog watchdog: sp805: fix restart handler 2020-04-08 11:18:38 +02:00
xen xen: branch for v5.7-rc2 2020-04-17 10:35:17 -07:00
zorro SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
Kconfig virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
Makefile virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00