Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Tashfin Shakeer Rhythm 695569241b devfreq: bimc-bwmon: Don't free/reallocate IRQ during suspend/resume ... In __resume_bw_hwmon(), request_threaded_irq() tries to make a big allocation before everything is thawed and oom killer is re-enabled, which triggers an order-2 memory allocation failure from kthreadd. This causes the devfreq device to fail to create the IRQ thread, and therefore, it can't resume. At this point, IRQs like qcom,cpu-cpu-llcc-bwmon, qcom,cpu-llcc-ddr-bwmon, qcom,snoop-l3-bwmon are not allocated. But __suspend_bw_hwmon() tries to free them anyway, causing the following series of call traces: [49231.949317] kthreadd: page allocation failure: order:2, mode:0x400d00(GFP_NOIO|__GFP_ZERO|__GFP_ACCOUNT), nodemask=(null),cpuset=/,mems_allowed=0 [49231.949341] CPU: 2 PID: 2 Comm: kthreadd Not tainted 5.4.278-Scarlet-v1.0-beta8 #1 [49231.949345] Hardware name: redwood based Qualcomm Technologies, Inc. SM7325 (DT) [49231.949349] Call trace: [49231.949366] dump_backtrace+0x0/0x1a0 [49231.949373] show_stack+0x14/0x20 [49231.949384] dump_stack+0x8c/0xcc [49231.949394] warn_alloc+0xec/0x110 [49231.949401] __alloc_pages_slowpath+0xe80/0xf00 [49231.949409] __alloc_pages_nodemask+0x150/0x180 [49231.949421] dup_task_struct+0x90/0x1e0 [49231.949427] copy_process+0x150/0xb30 [49231.949433] _do_fork+0x88/0x350 [49231.949439] kernel_thread+0x48/0x70 [49231.949448] kthreadd+0x1ec/0x280 [49231.949454] ret_from_fork+0x10/0x18 [49231.949470] Mem-Info: [49231.949488] active_anon:348299 inactive_anon:132548 isolated_anon:0 active_file:97104 inactive_file:98252 isolated_file:0 unevictable:61330 dirty:0 writeback:0 unstable:0 slab_reclaimable:23532 slab_unreclaimable:64025 mapped:208056 shmem:15179 pagetables:31685 bounce:0 free:36974 free_pcp:0 free_cma:46 [49231.949502] Node 0 active_anon:1393196kB inactive_anon:530192kB active_file:388416kB inactive_file:393008kB unevictable:245320kB isolated(anon):0kB isolated(file):0kB mapped:832224kB dirty:0kB writeback:0kB shmem:60716kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [49231.949519] Normal free:147896kB min:9312kB low:44784kB high:50268kB active_anon:1393080kB inactive_anon:530372kB active_file:388236kB inactive_file:392776kB unevictable:245320kB writepending:0kB present:5642556kB managed:5484672kB mlocked:244888kB kernel_stack:82704kB pagetables:126740kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:184kB [49231.949522] lowmem_reserve[]: 0 0 [49231.949530] Normal: 32941*4kB (UMECH) 2020*8kB (UMEH) 35*16kB (H) 7*32kB (H) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 148708kB [49231.949568] 257736 total pagecache pages [49231.949573] 3431 pages in swap cache [49231.949578] Swap cache stats: add 7482872, delete 7479455, find 338640/3769326 [49231.949581] Free swap = 2294120kB [49231.949584] Total swap = 4194300kB [49231.949588] 1410639 pages RAM [49231.949591] 0 pages HighMem/MovableOnly [49231.949594] 39471 pages reserved [49231.949597] 72704 pages cma reserved [49231.949606] cma: cma-0 pages: => 579 used of 5120 total pages [49231.949613] cma: cma-1 pages: => 512 used of 3072 total pages [49231.949619] cma: cma-2 pages: => 0 used of 4096 total pages [49231.949627] cma: cma-3 pages: => 826 used of 8192 total pages [49231.949635] cma: cma-4 pages: => 0 used of 7168 total pages [49231.949669] cma: cma-5 pages: => 0 used of 35840 total pages [49231.949676] cma: cma-6 pages: => 0 used of 4096 total pages [49231.949683] cma: cma-7 pages: => 0 used of 5120 total pages [49231.949725] bimc-bwmon 90b9100.qcom,snoop-l3-bwmon: Unable to register interrupt handler! (-12) [49231.949738] devfreq-icc 18590100.qcom,snoop-l3-bw: Unable to start HW monitor! (-12) [49231.949741] devfreq-icc 18590100.qcom,snoop-l3-bw: Unable to resume BW HW mon governor (-12) [49231.949744] devfreq 18590100.qcom,snoop-l3-bw: failed to resume devfreq device [49231.949880] bimc-bwmon 9091000.qcom,cpu-llcc-ddr-bwmon: Unable to register interrupt handler! (-12) [49231.949884] devfreq-icc soc:qcom,cpu-llcc-ddr-bw: Unable to start HW monitor! (-12) [49231.949885] devfreq-icc soc:qcom,cpu-llcc-ddr-bw: Unable to resume BW HW mon governor (-12) [49231.949888] devfreq soc:qcom,cpu-llcc-ddr-bw: failed to resume devfreq device [49231.950002] bimc-bwmon 90b6400.qcom,cpu-cpu-llcc-bwmon: Unable to register interrupt handler! (-12) [49231.950004] devfreq-icc soc:qcom,cpu-cpu-llcc-bw: Unable to start HW monitor! (-12) [49231.950006] devfreq-icc soc:qcom,cpu-cpu-llcc-bw: Unable to resume BW HW mon governor (-12) [49231.950009] devfreq soc:qcom,cpu-cpu-llcc-bw: failed to resume devfreq device [49232.171457] Filesystems sync: 0.005 seconds [49232.398473] Filesystems sync: 0.008 seconds [49232.417668] ------------[ cut here ]------------ [49232.417674] Trying to free already-free IRQ 53 [49232.417702] WARNING: CPU: 6 PID: 3656 at kernel/irq/manage.c:1765 __free_irq+0x2fc/0x400 [49232.417710] CPU: 6 PID: 3656 Comm: binder:502_7 Not tainted 5.4.278-Scarlet-v1.0-beta8 #1 [49232.417714] Hardware name: redwood based Qualcomm Technologies, Inc. SM7325 (DT) [49232.417717] pstate: 60000085 (nZCv daIf -PAN -UAO) [49232.417722] pc : __free_irq+0x2fc/0x400 [49232.417726] lr : __free_irq+0x2f8/0x400 [49232.417728] sp : ffffffaa166669e0 [49232.417731] x29: ffffffaa166669e0 x28: ffffffa9ae80d400 [49232.417735] x27: 0000000000000000 x26: 0000000000000000 [49232.417739] x25: ffffffa91ff3e268 x24: ffffffa9ae80d400 [49232.417742] x23: ffffffaa1948dc40 x22: 0000000000000035 [49232.417746] x21: ffffffa91ff3e2a0 x20: 0000000000000000 [49232.417749] x19: ffffffa91ff3e200 x18: 00000000ffed03ec [49232.417753] x17: 00000000000d03ec x16: ffffffda6c1a54e8 [49232.417756] x15: 0000000000000000 x14: 0000000000000082 [49232.417759] x13: 0000000000000034 x12: 0000000000000004 [49232.417761] x11: ffffffda6c1a54e0 x10: 00000000ffffffff [49232.417764] x9 : 115043787f31d900 x8 : 0000000000000000 [49232.417767] x7 : 0000000000000000 x6 : 7420676e69797254 [49232.417770] x5 : ffffffda6c2d5126 x4 : 0000000000000000 [49232.417773] x3 : 0000000000000000 x2 : ffffffffffffc9ff [49232.417776] x1 : 0000000000000000 x0 : 0000000000000022 [49232.417780] Call trace: [49232.417785] __free_irq+0x2fc/0x400 [49232.417789] free_irq+0x30/0x90 [49232.417802] suspend_bw_hwmon2+0xb8/0x140 [49232.417809] devfreq_bw_hwmon_ev_handler+0x1b4/0x520 [49232.417820] devfreq_suspend_device+0x58/0xe0 [49232.417825] devfreq_suspend+0x54/0x90 [49232.417838] dpm_suspend+0x2c/0x340 [49232.417841] dpm_suspend_start+0x7c/0xa0 [49232.417846] suspend_devices_and_enter+0xe0/0x5c0 [49232.417849] pm_suspend+0x258/0x280 [49232.417858] state_store+0x100/0x150 [49232.417869] kobj_attr_store+0x14/0x30 [49232.417883] sysfs_kf_write+0x38/0x50 [49232.417888] kernfs_fop_write+0x168/0x290 [49232.417896] __vfs_write+0x34/0x190 [49232.417899] vfs_write+0x11c/0x2d0 [49232.417903] __arm64_sys_write+0x78/0x110 [49232.417910] el0_svc_common+0xb0/0x120 [49232.417913] do_el0_svc+0x18/0x20 [49232.417918] el0_sync_handler+0x148/0x190 [49232.417922] el0_sync+0x140/0x180 [49232.417925] ---[ end trace b44a82c335d29d61 ]--- [49232.417952] ------------[ cut here ]------------ [49232.417954] Trying to free already-free IRQ 52 [49232.417962] WARNING: CPU: 6 PID: 3656 at kernel/irq/manage.c:1765 __free_irq+0x2fc/0x400 [49232.417966] CPU: 6 PID: 3656 Comm: binder:502_7 Tainted: G W 5.4.278-Scarlet-v1.0-beta8 #1 [49232.417968] Hardware name: redwood based Qualcomm Technologies, Inc. SM7325 (DT) [49232.417970] pstate: 60000085 (nZCv daIf -PAN -UAO) [49232.417974] pc : __free_irq+0x2fc/0x400 [49232.417977] lr : __free_irq+0x2f8/0x400 [49232.417979] sp : ffffffaa166669e0 [49232.417980] x29: ffffffaa166669e0 x28: ffffffa9ae80d400 [49232.417984] x27: 0000000000000000 x26: 0000000000000000 [49232.417987] x25: ffffffa91ff3e068 x24: ffffffa9ae80d400 [49232.417990] x23: ffffffaa1948d840 x22: 0000000000000034 [49232.417992] x21: ffffffa91ff3e0a0 x20: 0000000000000000 [49232.417995] x19: ffffffa91ff3e000 x18: 00000000ffecfa44 [49232.417998] x17: 00000000000cfa44 x16: ffffffda6c1a54e8 [49232.418001] x15: 0000000000000000 x14: 0000000000000082 [49232.418004] x13: 0000000000000034 x12: 0000000000000004 [49232.418006] x11: ffffffda6c1a54e0 x10: 00000000ffffffff [49232.418009] x9 : 115043787f31d900 x8 : 0000000000000000 [49232.418012] x7 : 0000000000000000 x6 : 7420676e69797254 [49232.418015] x5 : ffffffda6c2d5ace x4 : 0000000000000000 [49232.418018] x3 : 0000000000000000 x2 : ffffffffffffc9d0 [49232.418021] x1 : 0000000000000000 x0 : 0000000000000022 [49232.418023] Call trace: [49232.418027] __free_irq+0x2fc/0x400 [49232.418030] free_irq+0x30/0x90 [49232.418034] suspend_bw_hwmon3+0x94/0x110 [49232.418038] devfreq_bw_hwmon_ev_handler+0x1b4/0x520 [49232.418043] devfreq_suspend_device+0x58/0xe0 [49232.418047] devfreq_suspend+0x54/0x90 [49232.418050] dpm_suspend+0x2c/0x340 [49232.418053] dpm_suspend_start+0x7c/0xa0 [49232.418056] suspend_devices_and_enter+0xe0/0x5c0 [49232.418058] pm_suspend+0x258/0x280 [49232.418062] state_store+0x100/0x150 [49232.418066] kobj_attr_store+0x14/0x30 [49232.418070] sysfs_kf_write+0x38/0x50 [49232.418074] kernfs_fop_write+0x168/0x290 [49232.418077] __vfs_write+0x34/0x190 [49232.418080] vfs_write+0x11c/0x2d0 [49232.418083] __arm64_sys_write+0x78/0x110 [49232.418085] el0_svc_common+0xb0/0x120 [49232.418087] do_el0_svc+0x18/0x20 [49232.418091] el0_sync_handler+0x148/0x190 [49232.418094] el0_sync+0x140/0x180 [49232.418095] ---[ end trace b44a82c335d29d62 ]--- [49232.418112] ------------[ cut here ]------------ [49232.418113] Trying to free already-free IRQ 51 [49232.418120] WARNING: CPU: 6 PID: 3656 at kernel/irq/manage.c:1765 __free_irq+0x2fc/0x400 [49232.418122] CPU: 6 PID: 3656 Comm: binder:502_7 Tainted: G W 5.4.278-Scarlet-v1.0-beta8 #1 [49232.418124] Hardware name: redwood based Qualcomm Technologies, Inc. SM7325 (DT) [49232.418126] pstate: 60000085 (nZCv daIf -PAN -UAO) [49232.418130] pc : __free_irq+0x2fc/0x400 [49232.418133] lr : __free_irq+0x2f8/0x400 [49232.418135] sp : ffffffaa166669e0 [49232.418136] x29: ffffffaa166669e0 x28: ffffffa9ae80d400 [49232.418139] x27: 0000000000000000 x26: 0000000000000000 [49232.418142] x25: ffffffa91ff3de68 x24: ffffffa9ae80d400 [49232.418146] x23: ffffffaa1948d440 x22: 0000000000000033 [49232.418148] x21: ffffffa91ff3dea0 x20: 0000000000000000 [49232.418151] x19: ffffffa91ff3de00 x18: 00000000ffecf08c [49232.418154] x17: 00000000000cf08c x16: ffffffda6c1a54e8 [49232.418156] x15: 0000000000000000 x14: 0000000000000082 [49232.418159] x13: 0000000000000034 x12: 0000000000000004 [49232.418162] x11: ffffffda6c1a54e0 x10: 00000000ffffffff [49232.418165] x9 : 115043787f31d900 x8 : 0000000000000000 [49232.418168] x7 : 0000000000000000 x6 : 7420676e69797254 [49232.418171] x5 : ffffffda6c2d6486 x4 : 0000000000000000 [49232.418174] x3 : 0000000000000000 x2 : ffffffffffffc9a1 [49232.418176] x1 : 0000000000000000 x0 : 0000000000000022 [49232.418179] Call trace: [49232.418182] __free_irq+0x2fc/0x400 [49232.418186] free_irq+0x30/0x90 [49232.418188] suspend_bw_hwmon2+0xb8/0x140 [49232.418192] devfreq_bw_hwmon_ev_handler+0x1b4/0x520 [49232.418197] devfreq_suspend_device+0x58/0xe0 [49232.418201] devfreq_suspend+0x54/0x90 [49232.418204] dpm_suspend+0x2c/0x340 [49232.418207] dpm_suspend_start+0x7c/0xa0 [49232.418209] suspend_devices_and_enter+0xe0/0x5c0 [49232.418212] pm_suspend+0x258/0x280 [49232.418216] state_store+0x100/0x150 [49232.418219] kobj_attr_store+0x14/0x30 [49232.418223] sysfs_kf_write+0x38/0x50 [49232.418227] kernfs_fop_write+0x168/0x290 [49232.418230] __vfs_write+0x34/0x190 [49232.418233] vfs_write+0x11c/0x2d0 [49232.418236] __arm64_sys_write+0x78/0x110 [49232.418238] el0_svc_common+0xb0/0x120 [49232.418240] do_el0_svc+0x18/0x20 [49232.418243] el0_sync_handler+0x148/0x190 [49232.418246] el0_sync+0x140/0x180 [49232.418247] ---[ end trace b44a82c335d29d63 ]--- There is no need to reallocate and free the IRQs during suspend and resume. Replace IRQ thread creation with a simpler [enable|disable]_irq() approach to fix the issue. Co-authored-by: Sultan Alsawaf <sultan@kerneltoast.com> Change-Id: Ia12b8d24feddaef75792988ea55a6e8e29bf687a Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com> Signed-off-by: Tashfin Shakeer Rhythm <tashfinshakeerrhythm@gmail.com>		2026-05-07 14:20:06 +00:00
..
accessibility
acpi
amba
android
ata
atm
auxdisplay
base
bcma
block
bluetooth
bus
cdrom
char
clk
clocksource
connector
counter
cpufreq
cpuidle
crypto
dax
dca
devfreq	devfreq: bimc-bwmon: Don't free/reallocate IRQ during suspend/resume	2026-05-07 14:20:06 +00:00
dio
dma
dma-buf
edac
eisa
extcon
firewire
firmware
fpga
fsi
gnss
gpio
gpu	kgsl: Avoid use after free in kgsl_destroy_ion()	2026-05-05 20:02:21 +03:00
greybus
hid
hsi
hv
hwmon
hwspinlock
hwtracing
i2c
i3c
ide
idle
iio
infiniband
input
interconnect
iommu
ipack
irqchip
isdn
leds
lightnvm
macintosh
mailbox
mcb
md
media
memory
memstick
message
mfd
misc	BACKPORT: dsp-kernel: Separate overlap handling for ION and non-ION buffers	2026-05-05 20:02:22 +03:00
mmc
mtd
mux
net
nfc
ntb
nubus
nvdimm
nvme
nvmem
of
opp
oprofile
parisc
parport
pci
pcmcia
perf
phy
pinctrl
platform
pnp
power
powercap
pps
ps3
ptp
pwm
rapidio
ras
regulator
remoteproc
reset
rpmsg
rtc
s390
sbus
scsi
sfi
sh
siox
slimbus
soc
soundwire
spi
spmi
ssb
staging
target
tc
tee
thermal
thunderbolt
tty
uio
usb
vfio
vhost
video
virt
virtio
visorbus
vlynq
vme
w1
watchdog
xen
zorro
Kconfig
Makefile
OWNERS