Hi Lucas, On 26.11.2018 17:22, Lucas Stach wrote: > Hi Stefan, > > Am Montag, den 26.11.2018, 17:16 +0100 schrieb Stefan Agner: >> Hi, >> >> During debugging of the DBI register length limitation I encountered >> another issue which only seem to appear when building a Thumb2 >> kernel. >> I added a print in dw_pcie_read and compared all reads between Thumb2 >> and ARM, the two kernel seem to read exactly the same offsets. The >> only difference is that the Thumb2 kernel crashes when reading that >> particular register... > > What's connected to this PCIe port? If there is a bridge involved, then > some aborts are expected while scanning the downstream ports for > connected devices. Normally this is handled by the fault handler > installed by the driver, but I'm not sure if this has seen much testing > with a Thumb kernel. So could well be that the fault handler isn't > correctly adjusting the PC or something like that when the kernel is in > Thumb mode. That seems to be it! In the ARM case, immediately after that read the abort handler gets invoked (here with $pc, $instr shown). [ 5.021820] dw_pcie_read, addr f0a80000, size 4 [ 5.026347] imx6q_pcie_abort_handler, c044da1c, e5943000 I will look into the Thumb2 case. Thanks for the hint! -- Stefan > > Regards, > Lucas > >> Booting Linux on physical CPU 0x0 >> Linux version 4.19.4-00044-ged7a0cc2ef01-dirty (ags@trochilidae) (gcc >> version 7.2.1 20171011 (Linaro GCC 7.2-2017.11)) #459 SMP PREEMPT Mon >> Nov 26 16:28:46 CET 2018 >> CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=50c5387d >> CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction >> cache >> OF: fdt: Machine model: Toradex Apalis iMX6Q/D Module on Apalis >> Evaluation Board >> earlycon: ec_imx21 at MMIO 0x02020000 (options '115200n8') >> bootconsole [ec_imx21] enabled >> Memory policy: Data cache writealloc >> cma: Reserved 64 MiB at 0x4c000000 >> random: get_random_bytes called from start_kernel+0x85/0x338 with >> crng_init=0 >> percpu: Embedded 16 pages/cpu @(ptrval) s36108 r8192 d21236 u65536 >> Built 1 zonelists, mobility grouping on. Total pages: 260608 >> Kernel command line: root=LABEL=otaroot rootfstype=ext4 earlycon >> video=LVDS-1:e hw_random.default_quality=100 console=tty1 >> console=ttymxc0,115200 >> ostree=/ostree/boot.1/torizon/43498cf0ceac1b957d061dfefdf6268380a412e >> ac513fac22177b8b4a523f35b/0 >> Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) >> Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) >> Memory: 957960K/1048576K available (7168K kernel code, 421K rwdata, >> 3388K rodata, 1024K init, 419K bss, 25080K reserved, 65536K cma- >> reserved, 196608K highmem) >> Virtual kernel memory layout: >> vector : 0xffff0000 - 0xffff1000 ( 4 kB) >> fixmap : 0xffc00000 - 0xfff00000 (3072 kB) >> vmalloc : 0xf0800000 - 0xff800000 ( 240 MB) >> lowmem : 0xc0000000 - 0xf0000000 ( 768 MB) >> pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) >> modules : 0xbf800000 - 0xbfe00000 ( 6 MB) >> .text : 0x(ptrval) - 0x(ptrval) (8160 kB) >> .init : 0x(ptrval) - 0x(ptrval) (1024 kB) >> .data : 0x(ptrval) - 0x(ptrval) ( 422 kB) >> .bss : 0x(ptrval) - 0x(ptrval) ( 420 kB) >> SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 >> rcu: Preemptible hierarchical RCU implementation. >> Tasks RCU enabled. >> NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 >> L2C-310 errata 752271 769419 enabled >> L2C-310 enabling early BRESP for Cortex-A9 >> L2C-310 full line of zeros enabled for Cortex-A9 >> L2C-310 ID prefetch enabled, offset 16 lines >> L2C-310 dynamic clock gating enabled, standby mode enabled >> L2C-310 cache controller enabled, 16 ways, 1024 kB >> L2C-310: CACHE_ID 0x410000c7, AUX_CTRL 0x76470001 >> Switching to timer-based delay loop, resolution 333ns >> sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every >> 715827882841ns >> clocksource: mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, >> max_idle_ns: 637086815595 ns >> Console: colour dummy device 80x30 >> console [tty1] enabled >> Calibrating delay loop (skipped), value calculated using timer >> frequency.. 6.00 BogoMIPS (lpj=30000) >> pid_max: default: 32768 minimum: 301 >> Mount-cache hash table entries: 2048 (order: 1, 8192 bytes) >> Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes) >> CPU: Testing write buffer coherency: ok >> CPU0: Spectre v2: using BPIALL workaround >> CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 >> Setting up static identity map for 0x10100000 - 0x10100054 >> rcu: Hierarchical SRCU implementation. >> smp: Bringing up secondary CPUs ... >> CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 >> CPU1: Spectre v2: using BPIALL workaround >> CPU2: thread -1, cpu 2, socket 0, mpidr 80000002 >> CPU2: Spectre v2: using BPIALL workaround >> CPU3: thread -1, cpu 3, socket 0, mpidr 80000003 >> CPU3: Spectre v2: using BPIALL workaround >> smp: Brought up 1 node, 4 CPUs >> SMP: Total of 4 processors activated (24.00 BogoMIPS). >> CPU: All CPU(s) started in SVC mode. >> devtmpfs: initialized >> VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev >> 4 >> clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, >> max_idle_ns: 19112604462750000 ns >> futex hash table entries: 1024 (order: 4, 65536 bytes) >> pinctrl core: initialized pinctrl subsystem >> NET: Registered protocol family 16 >> DMA: preallocated 256 KiB pool for atomic coherent allocations >> cpuidle: using governor menu >> CPU identified as i.MX6Q, silicon rev 1.5 >> vdd1p1: supplied by regulator-dummy >> vdd3p0: supplied by regulator-dummy >> vdd2p5: supplied by regulator-dummy >> vddarm: supplied by regulator-dummy >> vddpu: supplied by regulator-dummy >> vddsoc: supplied by regulator-dummy >> No ATAGs? >> hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint >> registers. >> hw-breakpoint: maximum watchpoint size is 4 bytes. >> imx6q-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver >> Serial: AMBA PL011 UART driver >> mxs-dma 110000.dma-apbh: initialized >> usb_host_vbus: supplied by usb_host_vbus_hub >> vgaarb: loaded >> SCSI subsystem initialized >> usbcore: registered new interface driver usbfs >> usbcore: registered new interface driver hub >> usbcore: registered new device driver usb >> i2c i2c-0: IMX I2C adapter registered >> i2c i2c-0: can't use DMA, using PIO instead. >> stmpe-i2c 2-0041: stmpe811 detected, chip id: 0x811 >> i2c i2c-2: IMX I2C adapter registered >> i2c i2c-2: can't use DMA, using PIO instead. >> gpio-81 (scl): enforced open drain please flag it properly in DT/ACPI >> DSDT/board file >> i2c i2c-1: IMX I2C adapter registered >> i2c i2c-1: can't use DMA, using PIO instead. >> media: Linux media interface: v0.10 >> videodev: Linux video capture interface: v2.00 >> pps_core: LinuxPPS API ver. 1 registered >> pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti >> <giometti@xxxxxxxx> >> PTP clock support registered >> Advanced Linux Sound Architecture Driver Initialized. >> Bluetooth: Core ver 2.22 >> NET: Registered protocol family 31 >> Bluetooth: HCI device and connection manager initialized >> Bluetooth: HCI socket layer initialized >> Bluetooth: L2CAP socket layer initialized >> Bluetooth: SCO socket layer initialized >> clocksource: Switched to clocksource mxc_timer1 >> VFS: Disk quotas dquot_6.6.0 >> VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) >> NET: Registered protocol family 2 >> tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 >> bytes) >> TCP established hash table entries: 8192 (order: 3, 32768 bytes) >> TCP bind hash table entries: 8192 (order: 4, 65536 bytes) >> TCP: Hash tables configured (established 8192 bind 8192) >> UDP hash table entries: 512 (order: 2, 16384 bytes) >> UDP-Lite hash table entries: 512 (order: 2, 16384 bytes) >> NET: Registered protocol family 1 >> RPC: Registered named UNIX socket transport module. >> RPC: Registered udp transport module. >> RPC: Registered tcp transport module. >> RPC: Registered tcp NFSv4.1 backchannel transport module. >> Trying to unpack rootfs image as initramfs... >> Freeing initrd memory: 2516K >> hw perfevents: no interrupt-affinity property for /pmu, guessing. >> hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters >> available >> Initialise system trusted keyrings >> workingset: timestamp_bits=30 max_order=18 bucket_order=0 >> NFS: Registering the id_resolver key type >> Key type id_resolver registered >> Key type id_legacy registered >> jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc. >> fuse init (API version 7.27) >> Key type asymmetric registered >> Asymmetric key parser 'x509' registered >> bounce: pool size: 64 pages >> io scheduler noop registered >> io scheduler deadline registered >> io scheduler cfq registered (default) >> io scheduler mq-deadline registered >> io scheduler kyber registered >> imx6q-pcie 1ffc000.pcie: Linked as a consumer to regulator.12 >> imx6q-pcie 1ffc000.pcie: host bridge /soc/pcie@1ffc000 ranges: >> imx6q-pcie 1ffc000.pcie: IO 0x01f80000..0x01f8ffff -> 0x00000000 >> imx6q-pcie 1ffc000.pcie: MEM 0x01000000..0x01efffff -> 0x01000000 >> dw_pcie_read, addr f09bc710, size 4 >> [...] >> dw_pcie_read, addr f09bc72c, size 4 >> imx6q-pcie 1ffc000.pcie: Link up >> imx6q-pcie 1ffc000.pcie: Link: Gen2 disabled >> dw_pcie_read, addr f09bc080, size 4 >> imx6q-pcie 1ffc000.pcie: Link up, Gen1 >> imx6q-pcie 1ffc000.pcie: PCI host bridge to bus 0000:00 >> pci_bus 0000:00: root bus resource [bus 00-ff] >> pci_bus 0000:00: root bus resource [io 0x0000-0xffff] >> pci_bus 0000:00: root bus resource [mem 0x01000000-0x01efffff] >> dw_pcie_read, addr f09bc000, size 4 >> [...] >> dw_pcie_read, addr f09bc004, size 2 >> PCI: bus0: Fast back to back transfers disabled >> dw_pcie_read, addr f09bc018, size 4 >> [...] >> dw_pcie_read, addr f09bc082, size 2 >> pci 0000:01:00.0: 2.000 Gb/s available PCIe bandwidth, limited by 2.5 >> GT/s x1 link at 0000:00:00.0 (capable of 7.876 Gb/s with 8 GT/s x1 >> link) >> dw_pcie_read, addr f09bc72c, size 4 >> [...] >> dw_pcie_read, addr f09bc908, size 4 >> PCI: bus1: Fast back to back transfers disabled >> dw_pcie_read, addr f09bc72c, size 4 >> [...] >> dw_pcie_read, addr f09bc908, size 4 >> pci 0000:01:00.0: bridge configuration invalid ([bus 00-00]), >> reconfiguring >> dw_pcie_read, addr f09bc72c, size 4 >> [...] >> dw_pcie_read, addr f09bc72c, size 4 >> dw_pcie_read, addr f09bc908, size 4 >> dw_pcie_read, addr f0a80000, size 4 >> Unhandled fault: external abort on non-linefetch (0x1008) at >> 0xf0a80000 >> pgd = (ptrval) >> [f0a80000] *pgd=3c5b1811, *pte=01f40243, *ppte=01f40013 >> Internal error: : 1008 [#1] PREEMPT SMP THUMB2 >> Modules linked in: >> CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.4-00044-ged7a0cc2ef01- >> dirty #459 >> Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) >> PC is at dw_pcie_read+0x36/0x54 >> LR is at dw_pcie_read+0x19/0x54 >> pc : [<c034ab8e>] lr : [<c034ab71>] psr: 600000b3 >> sp : ec077b80 ip : 00000020 fp : 00000000 >> r10: ec077be0 r9 : ec531c10 r8 : 00000004 >> r7 : 00000000 r6 : ec077be0 r5 : 00000004 r4 : f0a80000 >> r3 : c0619ba3 r2 : c0619ba3 r1 : 00000002 r0 : 00000000 >> Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA Thumb Segment none >> Control: 50c5387d Table: 1000404a DAC: 00000051 >> Process swapper/0 (pid: 1, stack limit = 0x(ptrval)) >> Stack: (0xec077b80 to 0xec078000) >> 7b80: ec531c28 00000000 f0a80000 c034b3e7 01f40000 00000000 02000000 >> 00000000 >> 7ba0: 00040000 c0c67cc0 0000000a 00000000 c0dbe52c c0d04d08 c034b2f9 >> c0d1b650 >> 7bc0: ec077c38 00000000 40000013 00000002 00000000 c03366cb ec077be0 >> 00000010 >> 7be0: 00000000 c0619ba3 ec077c30 c0d04d08 ec077c38 00000000 0000ea60 >> ec5c4400 >> 7c00: ec085068 c033898f 00000002 c0322f29 c0336e17 c0d04d08 00000000 >> 00000000 >> 7c20: ec5c4400 00000000 ec085068 00000002 00000000 c0338e39 c0619ba3 >> c0619ba3 >> 7c40: 00000001 ec5c4400 00000000 00000000 c0d04d08 c0338ea7 00000002 >> ec5c4400 >> 7c60: ec085000 00000000 c0a81f0c c0339aaf 00000033 c0336e17 00000000 >> c0738cff >> 7c80: 00000002 c0336e17 00ff0201 ec5c4000 ec085000 ec5c4400 00000001 >> c0d04d08 >> 7ca0: ec085068 00000002 00000000 c03398c9 ec5c4000 ec5c4478 00000000 >> 00000000 >> 7cc0: 00000000 00000001 c0a46ddc 00000001 00ff0201 c0619ba3 01400000 >> ec5c4000 >> 7ce0: ec085000 00000001 ec5c4014 00000001 00000001 00000000 00000000 >> c0339bc9 >> 7d00: 00000001 c011dd81 ec36bc00 00000001 00000001 c0339269 0011cc11 >> ec36bc00 >> 7d20: ec084800 ec5c4000 00000000 c0d04d08 ec084868 00000001 000000ff >> c033994b >> 7d40: ec36bc00 00000000 00000000 00000000 00000000 00000001 c0a46ddc >> 00000001 >> 7d60: 00ff0100 c0619ba3 01470000 ec36bc00 ec36bc14 ec084800 ec36bc14 >> 00000000 >> 7d80: 00000000 00000000 00000000 c0339b59 00000000 ec531c10 ec5aea40 >> 00000001 >> 7da0: 00000000 c0619ba3 00000000 ec531e00 00000000 ec5aebc0 ec1aee10 >> ec531fb0 >> 7dc0: 00000000 ec531fb0 ec531e00 c0339d81 c033a32d ec531c28 00000000 >> c034ba41 >> 7de0: 00000000 00000000 ef7df370 c0a85048 c0a70710 c0a85020 c0a84e4c >> ec41cc10 >> 7e00: ec1aee10 ec531c10 ef7df370 ec1aee00 c0d1b760 00000000 00000000 >> c034c2fb >> 7e20: 00000000 00000000 ec1aee10 00000000 c0d1b760 00000000 00000000 >> c03e8351 >> 7e40: c0dc7414 ec1aee10 c0dc7418 c03e7123 ec1aee10 c0d1b760 ec1aee44 >> c0d04d08 >> 7e60: 00000000 c0c4a83c c0c5e820 c03e72b9 c0d04d08 c0738cff c08390cc >> ec1aee10 >> 7e80: c0d1b760 ec1aee44 c0d04d08 00000000 c0c4a83c c0c5e820 00000000 >> c03e73ff >> 7ea0: 00000000 c0d1b760 c03e7391 c03e5e17 00000000 ec007b58 ec191fb4 >> c0619ba3 >> 7ec0: ec007b6c c0d1b760 ec41cb80 00000000 c0d2eb58 c03e6933 c0a854e4 >> c0d1b760 >> 7ee0: c0d04d08 c0d1b760 c0d04d08 ffffe000 c0c163fb c03e7995 c0d1b74c >> c0d69780 >> 7f00: c0d04d08 c01026d7 c0c004fb 00000100 00000100 c012d500 c0abc94c >> c0c004fb >> 7f20: 00000000 00000006 00000006 c0a4caac 00000000 c0d04d08 c0a564cc >> c0a4cb20 >> 7f40: 00000000 efffea7d efffea84 c0619ba3 00000000 c0619ba3 c0d69780 >> 00000007 >> 7f60: c0d69780 c0c4a834 c0d69780 00000100 c0c4a83c c0c00b59 00000006 >> 00000006 >> 7f80: 00000000 c0c004fb 00000000 c073429d 00000000 00000000 00000000 >> 00000000 >> 7fa0: 00000000 c07342a3 00000000 c01010f9 00000000 00000000 00000000 >> 00000000 >> 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 >> 00000000 >> 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 >> 00000000 >> [<c034ab8e>] (dw_pcie_read) from [<c034b3e7>] >> (dw_pcie_rd_conf+0xef/0x120) >> [<c034b3e7>] (dw_pcie_rd_conf) from [<c03366cb>] >> (pci_bus_read_config_dword+0x47/0x70) >> [<c03366cb>] (pci_bus_read_config_dword) from [<c033898f>] >> (pci_bus_generic_read_dev_vendor_id+0x17/0xf4) >> [<c033898f>] (pci_bus_generic_read_dev_vendor_id) from [<c0338e39>] >> (pci_scan_single_device+0x41/0x88) >> [<c0338e39>] (pci_scan_single_device) from [<c0338ea7>] >> (pci_scan_slot+0x27/0x98) >> [<c0338ea7>] (pci_scan_slot) from [<c0339aaf>] >> (pci_scan_child_bus_extend+0x2b/0x1c0) >> [<c0339aaf>] (pci_scan_child_bus_extend) from [<c03398c9>] >> (pci_scan_bridge_extend+0x1ed/0x394) >> [<c03398c9>] (pci_scan_bridge_extend) from [<c0339bc9>] >> (pci_scan_child_bus_extend+0x145/0x1c0) >> [<c0339bc9>] (pci_scan_child_bus_extend) from [<c033994b>] >> (pci_scan_bridge_extend+0x26f/0x394) >> [<c033994b>] (pci_scan_bridge_extend) from [<c0339b59>] >> (pci_scan_child_bus_extend+0xd5/0x1c0) >> [<c0339b59>] (pci_scan_child_bus_extend) from [<c0339d81>] >> (pci_scan_root_bus_bridge+0x39/0x84) >> [<c0339d81>] (pci_scan_root_bus_bridge) from [<c034ba41>] >> (dw_pcie_host_init+0x1e5/0x364) >> [<c034ba41>] (dw_pcie_host_init) from [<c034c2fb>] >> (imx6_pcie_probe+0x22f/0x394) >> [<c034c2fb>] (imx6_pcie_probe) from [<c03e8351>] >> (platform_drv_probe+0x2d/0x60) >> [<c03e8351>] (platform_drv_probe) from [<c03e7123>] >> (really_probe+0x12f/0x1cc) >> [<c03e7123>] (really_probe) from [<c03e72b9>] >> (driver_probe_device+0x3d/0x114) >> [<c03e72b9>] (driver_probe_device) from [<c03e73ff>] >> (__driver_attach+0x6f/0x70) >> [<c03e73ff>] (__driver_attach) from [<c03e5e17>] >> (bus_for_each_dev+0x3b/0x64) >> [<c03e5e17>] (bus_for_each_dev) from [<c03e6933>] >> (bus_add_driver+0xff/0x164) >> [<c03e6933>] (bus_add_driver) from [<c03e7995>] >> (driver_register+0x35/0x9c) >> [<c03e7995>] (driver_register) from [<c01026d7>] >> (do_one_initcall+0x3f/0x128) >> [<c01026d7>] (do_one_initcall) from [<c0c00b59>] >> (kernel_init_freeable+0x115/0x180) >> [<c0c00b59>] (kernel_init_freeable) from [<c07342a3>] >> (kernel_init+0x7/0xd0) >> [<c07342a3>] (kernel_init) from [<c01010f9>] >> (ret_from_fork+0x11/0x38) >> Exception stack(0xec077fb0 to 0xec077ff8) >> 7fa0: 00000000 00000000 00000000 >> 00000000 >> 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 >> 00000000 >> 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 >> Code: f3bf 8f4f 6033 bd70 (6823) f3bf >> ---[ end trace e82f75a9f4dd9bc8 ]--- >> note: swapper/0[1] exited with preempt_count 1 >> Kernel panic - not syncing: Attempted to kill init! >> exitcode=0x0000000b >> [ 5.697939] >> CPU1: stopping >> CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D 4.19.4- >> 00044-ged7a0cc2ef01-dirty #459 >> Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) >> [<c010d4f5>] (unwind_backtrace) from [<c01099fb>] >> (show_stack+0xb/0xc) >> [<c01099fb>] (show_stack) from [<c0726a49>] (dump_stack+0x5d/0x6c) >> [<c0726a49>] (dump_stack) from [<c010c34d>] (handle_IPI+0x149/0x158) >> [<c010c34d>] (handle_IPI) from [<c0322f59>] >> (gic_handle_irq+0x6d/0x70) >> [<c0322f59>] (gic_handle_irq) from [<c0101a65>] (__irq_svc+0x65/0xac) >> Exception stack(0xec0b9f60 to 0xec0b9fa8) >> 9f60: 00000000 00000b10 ef7ad4cc c01145a1 ffffe000 c0d04d30 c0d04d6c >> 00000002 >> 9f80: 00000000 c0d04d08 c0c675b0 c0a673b0 c0d04de4 ec0b9fb0 c01072dd >> c01072de >> 9fa0: 40000033 ffffffff >> [<c0101a65>] (__irq_svc) from [<c01072de>] (arch_cpu_idle+0x22/0x24) >> [<c01072de>] (arch_cpu_idle) from [<c01360f7>] (do_idle+0x14b/0x1dc) >> [<c01360f7>] (do_idle) from [<c0136397>] >> (cpu_startup_entry+0x13/0x14) >> [<c0136397>] (cpu_startup_entry) from [<10102491>] (0x10102491) >> CPU2: stopping >> CPU: 2 PID: 0 Comm: swapper/2 Tainted: G D 4.19.4- >> 00044-ged7a0cc2ef01-dirty #459 >> Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) >> [<c010d4f5>] (unwind_backtrace) from [<c01099fb>] >> (show_stack+0xb/0xc) >> [<c01099fb>] (show_stack) from [<c0726a49>] (dump_stack+0x5d/0x6c) >> [<c0726a49>] (dump_stack) from [<c010c34d>] (handle_IPI+0x149/0x158) >> [<c010c34d>] (handle_IPI) from [<c0322f59>] >> (gic_handle_irq+0x6d/0x70) >> [<c0322f59>] (gic_handle_irq) from [<c0101a65>] (__irq_svc+0x65/0xac) >> Exception stack(0xec0bbf60 to 0xec0bbfa8) >> bf60: 00000000 00000810 ef7bd4cc c01145a1 ffffe000 c0d04d30 c0d04d6c >> 00000004 >> bf80: 00000000 c0d04d08 c0c675b0 c0a673b0 c0d04de4 ec0bbfb0 c01072dd >> c01072de >> bfa0: 40000033 ffffffff >> [<c0101a65>] (__irq_svc) from [<c01072de>] (arch_cpu_idle+0x22/0x24) >> [<c01072de>] (arch_cpu_idle) from [<c01360f7>] (do_idle+0x14b/0x1dc) >> [<c01360f7>] (do_idle) from [<c0136397>] >> (cpu_startup_entry+0x13/0x14) >> [<c0136397>] (cpu_startup_entry) from [<10102491>] (0x10102491) >> CPU3: stopping >> CPU: 3 PID: 0 Comm: swapper/3 Tainted: G D 4.19.4- >> 00044-ged7a0cc2ef01-dirty #459 >> Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) >> [<c010d4f5>] (unwind_backtrace) from [<c01099fb>] >> (show_stack+0xb/0xc) >> [<c01099fb>] (show_stack) from [<c0726a49>] (dump_stack+0x5d/0x6c) >> [<c0726a49>] (dump_stack) from [<c010c34d>] (handle_IPI+0x149/0x158) >> [<c010c34d>] (handle_IPI) from [<c0322f59>] >> (gic_handle_irq+0x6d/0x70) >> [<c0322f59>] (gic_handle_irq) from [<c0101a65>] (__irq_svc+0x65/0xac) >> Exception stack(0xec0bdf60 to 0xec0bdfa8) >> df60: 00000000 00000630 ef7cd4cc c01145a1 ffffe000 c0d04d30 c0d04d6c >> 00000008 >> df80: 00000000 c0d04d08 c0c675b0 c0a673b0 c0d04de4 ec0bdfb0 c01072dd >> c01072de >> dfa0: 40000033 ffffffff >> [<c0101a65>] (__irq_svc) from [<c01072de>] (arch_cpu_idle+0x22/0x24) >> [<c01072de>] (arch_cpu_idle) from [<c01360f7>] (do_idle+0x14b/0x1dc) >> [<c01360f7>] (do_idle) from [<c0136397>] >> (cpu_startup_entry+0x13/0x14) >> [<c0136397>] (cpu_startup_entry) from [<10102491>] (0x10102491) >> ---[ end Kernel panic - not syncing: Attempted to kill init! >> exitcode=0x0000000b >> ]--- >> >> The patches I have ontop of 4.19.4 are all unrelated. I also can >> reproduce the issue on a vanilla 4.18 kernel. Not really sure what >> is going on here or how to debug that issue... Anybody else seen >> this? >> >> -- >> Stefan
