Subject: [bug report] [spi.c] Kernel panic - not syncing: Asynchronous SError Interrupt

From: Robert <[email-masked]>
Date: Sun, 07 Apr 2024 16:39:25 +0200

Working on OpenWrt kernel 6.6.23 with enabling/checking SPI 

root@BPI-R4:/# echo "help" > /dev/spidev1.0
[ 131.681610] SError Interrupt on CPU3, code 0x00000000bf000002 -- SError
[ 131.681623] CPU: 3 PID: 1306 Comm: ash Tainted: G O 6.6.23 #0
[ 131.681630] Hardware name: Bananapi BPI-R4 (DT)
[ 131.681632] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 131.681637] pc : mtk_spi_hw_init (/home/openwrt66/openwrt/build_dir/target-aarch64_cortex-a53_musl/linux-mediatek_filogic/linux-6.6.23/drivers/spi/spi-mt65xx.c:356) >>>>> >>>> if (spi->mode & SPI_LOOP)
[ 131.681646] lr : mtk_spi_prepare_message (/home/openwrt66/openwrt/build_dir/target-aarch64_cortex-a53_musl/linux-mediatek_filogic/linux-6.6.23/drivers/spi/spi-mt65xx.c:450) >>>>>>>> static void spi_remove(struct device *dev) {
[ 131.681649] sp : ffffffc081d7bb10
[ 131.681651] x29: ffffffc081d7bb10 x28: ffffff80c1b46780 x27: 0000000000000000
[ 131.681659] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000
[ 131.681664] x23: ffffff80c112a000 x22: ffffffc081d7bc20 x21: 0000000000000000
[ 131.681668] x20: ffffff80c112a000 x19: ffffffffffffffff x18: 0000000000000000
[ 131.681673] x17: 0000000000000000 x16: 0000000000000000 x15: 0000007fabeef6c0
[ 131.681677] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 131.681681] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000004
[ 131.681685] x8 : 0000000000000002 x7 : 0000000000000001 x6 : 0000000000000001
[ 131.681689] x5 : 0000000000000001 x4 : ffffffc0808df408 x3 : ffffff80c112a540
[ 131.681693] x2 : 0000000000000000 x1 : ffffff80c0966000 x0 : 0000000000000001
[ 131.681699] Kernel panic - not syncing: Asynchronous SError Interrupt
[ 131.681701] SMP: stopping secondary CPUs
[ 131.681706] Kernel Offset: disabled
[ 131.681707] CPU features: 0x0,00000000,20000000,1000400b
[ 131.681710] Memory Limit: none
[ 131.689561] pstore: backend (ramoops) writing error (-28)
PANIC at PC : 0x00000000430048a8

root@BPI-R4:/nvme/work/oled# spidev_test -D /dev/spidev1.0 -v
[ 117.280573] SError Interrupt on CPU2, code 0x00000000bf000002 -- SError
[ 117.280587] CPU: 2 PID: 4597 Comm: spidev_test Tainted: G O 6.6.23 #0
[ 117.280593] Hardware name: Bananapi BPI-R4 (DT)
[ 117.280595] pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 117.280600] pc : mtk_spi_set_cs (/home/openwrt66/openwrt/build_dir/target-aarch64_cortex-a53_musl/linux-mediatek_filogic/linux-6.6.23/drivers/spi/spi-mt65xx.c:453) >>>>>>> static void mtk_spi_set_cs(struct spi_device *spi, bool enable) {
[ 117.280610] lr : spi_set_cs (/home/openwrt66/openwrt/build_dir/target-aarch64_cortex-a53_musl/linux-mediatek_filogic/linux-6.6.23/drivers/spi/spi.c:996 (discriminator 1)) >>>>> if (spi_get_csgpiod(spi, 0) || !spi->controller->set_cs_timing) {
[ 117.280616] sp : ffffffc085ecbc00
[ 117.280618] x29: ffffffc085ecbc00 x28: ffffff80ca3d2280 x27: 0000000000000000
[ 117.280625] x26: 0000000000000000 x25: ffffff80c1fe21c0 x24: ffffff80c1fe2188
[ 117.280630] x23: ffffff80c0d9e800 x22: 0000000000000000 x21: 0000000000000000
[ 117.280634] x20: 0000000000000000 x19: ffffff80c0d9e800 x18: 0000000000000000
[ 117.280639] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[ 117.280643] x14: 02971e346eefd562 x13: 0140fc4c1b8dc750 x12: 0000000000000002
[ 117.280648] x11: 0000000000000000 x10: 0000000000000400 x9 : 000000021a0d78ed
[ 117.280652] x8 : 0000000000000800 x7 : ffffff80c0f9dcd0 x6 : 0000000000000000
[ 117.280657] x5 : 000000021a2fcdfd x4 : ffffff80c0e2a800 x3 : 0000000000000000
[ 117.280661] x2 : 0000000000000000 x1 : 0000000000000001 x0 : ffffff80c0e2ad40
[ 117.280667] Kernel panic - not syncing: Asynchronous SError Interrupt
[ 117.280669] SMP: stopping secondary CPUs
[ 117.280677] Kernel Offset: disabled
[ 117.280678] CPU features: 0x0,00000000,20000000,1000400b
[ 117.280681] Memory Limit: none
[ 117.2885p2] pstore: backend (ramoops) writing error (-28)
PANIC at PC : 0x00000000430048a8

root@BPI-R4:~# spi-config -d /dev/spidev1.0 --speed=1000000
[  409.674045] SError Interrupt on CPU0, code 0x00000000bf000002 -- SError
[  409.674059] CPU: 0 PID: 5583 Comm: spi-config Tainted: G           O       6.6.23 #0
[  409.674066] Hardware name: Bananapi BPI-R4 (DT)
[  409.674068] pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[  409.674072] pc : mtk_spi_set_cs+0x54/0x80
[  409.674082] lr : spi_set_cs+0x88/0x1dc
[  409.674088] sp : ffffffc08738bc00
[  409.674089] x29: ffffffc08738bc00 x28: ffffff80ce051700 x27: 0000000000000000
[  409.674097] x26: 0000000000000000 x25: ffffff80c1679040 x24: ffffff80c1679008
[  409.674102] x23: ffffff80c0be9800 x22: 0000000000000000 x21: 0000000000000000
[  409.674106] x20: 0000000000000000 x19: ffffff80c0be9800 x18: 0000000000000000
[  409.674111] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[  409.674115] x14: 02d06a0f57810356 x13: 01683736ecc24756 x12: 0000000001683736
[  409.674120] x11: 00000000fa83b2da x10: 000000000000b67e x9 : 0000000000000009
[  409.674124] x8 : ffffff80ff76f400 x7 : ffffff80c0d66850 x6 : 0000000000000002
[  409.674128] x5 : 0000000620ecf26e x4 : ffffff80c0d7c000 x3 : 0000000000000000
[  409.674133] x2 : 0000000000000000 x1 : 0000000000000001 x0 : ffffff80c0d7c540
[  409.674139] Kernel panic - not syncing: Asynchronous SError Interrupt
[  409.674142] SMP: stopping secondary CPUs
[  409.674147] Kernel Offset: disabled
[  409.674148] CPU features: 0x0,00000000,20000000,1000400b
[  409.674152] Memory Limit: none
[  409.682019] pstore: backend (ramoops) writing error (-28)
PANIC at PC : 0x00000000430048a8

Regards
Robert