Following kernel crash noticed on armv7 running Linux next-20230418.

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

[ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 6.3.0-rc7-next-20230417 (tuxmake@tuxmake) (Debian clang version 16.0.1 (++20230404073039+c3591d714b49-1~exp1~20230404193157.68), Debian LLD 16.0.1) #1 SMP @1681755305 [ 0.000000] CPU: ARMv7 Processor [414fc0f0] revision 0 (ARMv7), cr=10c5387d [ 0.000000] CPU: div instructions available: patching division code [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache [ 0.000000] OF: fdt: Machine model: linux,dummy-virt [ 0.000000] random: crng init done [ 0.000000] OF: fdt: Ignoring memory range 0x100000000 - 0x140000000 [ 0.000000] earlycon: pl11 at MMIO 0x09000000 (options '') [ 0.000000] printk: bootconsole [pl11] enabled [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] efi: UEFI not found. [ 0.000000] cma: Reserved 64 MiB at 0xfb800000 [ 0.000000] Zone ranges: [ 0.000000] DMA empty [ 0.000000] Normal empty [ 0.000000] HighMem [mem 0x0000000040000000-0x00000000ffffefff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000040000000-0x00000000ffffefff] [ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x00000000ffffefff] [ 0.000000] psci: probing for conduit method from DT. [ 0.000000] psci: PSCIv1.1 detected in firmware. [ 0.000000] psci: Using standard PSCI v0.2 function IDs [ 0.000000] psci: Trusted OS migration not required [ 0.000000] psci: SMC Calling Convention v1.0 [ 0.000000] percpu: Embedded 17 pages/cpu s37076 r8192 d24364 u69632 [ 0.000000] pcpu-alloc: s37076 r8192 d24364 u69632 alloc=17*4096 [ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Kernel command line: console=ttyAMA0,115200 rootwait root=/dev/vda debug verbose console_msg_format=syslog earlycon <5>[ 0.000000] Unknown kernel command line parameters "verbose", will be passed to user space. <6>[ 0.000000] Dentry cache hash table entries: 1024 (order: 0, 4096 bytes, linear) <6>[ 0.000000] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) <6>[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 786431 <6>[ 0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off <6>[ 0.000000] Memory: 3016344K/3145724K available (19456K kernel code, 2715K rwdata, 9148K rodata, 2048K init, 497K bss, 63844K reserved, 65536K cma-reserved, 2293756K highmem) <4>[ 0.000000] swapper: page allocation failure: order:0, mode:0x0(), nodemask=(null) <4>[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.3.0-rc7-next-20230417 #1 <4>[ 0.000000] Hardware name: Generic DT based system <4>[ 0.000000] unwind_backtrace from show_stack+0x28/0x2c <4>[ 0.000000] show_stack from dump_stack_lvl+0x60/0x78 <4>[ 0.000000] dump_stack_lvl from warn_alloc+0x110/0x198 <4>[ 0.000000] warn_alloc from __alloc_pages_slowpath+0xbd0/0xc58 <4>[ 0.000000] __alloc_pages_slowpath from __alloc_pages+0x240/0x26c <4>[ 0.000000] __alloc_pages from new_slab+0x180/0x554 <4>[ 0.000000] new_slab from __kmem_cache_create+0x1e8/0x588 <4>[ 0.000000] __kmem_cache_create from create_boot_cache+0x9c/0xc4 <4>[ 0.000000] create_boot_cache from kmem_cache_init+0x8c/0x150 <4>[ 0.000000] kmem_cache_init from mm_core_init+0x34/0x44 <4>[ 0.000000] mm_core_init from start_kernel+0x18c/0x3b4 <4>[ 0.000000] start_kernel from 0x0 <4>[ 0.000000] Mem-Info: <4>[ 0.000000] active_anon:0 inactive_anon:0 isolated_anon:0 <4>[ 0.000000] active_file:0 inactive_file:0 isolated_file:0 <4>[ 0.000000] unevictable:0 dirty:0 writeback:0 <4>[ 0.000000] slab_reclaimable:0 slab_unreclaimable:0 <4>[ 0.000000] mapped:0 shmem:0 pagetables:0 <4>[ 0.000000] sec_pagetables:0 bounce:0 <4>[ 0.000000] kernel_misc_reclaimable:0 <4>[ 0.000000] free:754086 free_pcp:0 free_cma:0 <4>[ 0.000000] 0 total pagecache pages <4>[ 0.000000] 0 pages in swap cache <4>[ 0.000000] Free swap = 0kB <4>[ 0.000000] Total swap = 0kB <4>[ 0.000000] 786431 pages RAM <4>[ 0.000000] 786431 pages HighMem/MovableOnly <4>[ 0.000000] 32345 pages reserved <4>[ 0.000000] 16384 pages cma reserved <4>[ 0.000000] ------------[ cut here ]------------ <2>[ 0.000000] kernel BUG at mm/slub.c:4240! <0>[ 0.000000] Internal error: Oops - BUG: 0 [#1] SMP ARM <4>[ 0.000000] Modules linked in: <4>[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.3.0-rc7-next-20230417 #1 <4>[ 0.000000] Hardware name: Generic DT based system <4>[ 0.000000] PC is at __kmem_cache_create+0x580/0x588 <4>[ 0.000000] LR is at __alloc_pages_slowpath+0xbd0/0xc58 <4>[ 0.000000] pc : [<c0553608>] lr : [<c05380fc>] psr: 600000d3 <4>[ 0.000000] sp : c2201f50 ip : 00000058 fp : c2201f70 <4>[ 0.000000] r10: 10c5387d r9 : c24daa20 r8 : c24d43d8 <4>[ 0.000000] r7 : c24daa2c r6 : c210a1f8 r5 : 00002000 r4 : c210a1f8 <4>[ 0.000000] r3 : c2201d08 r2 : 00000000 r1 : 00000000 r0 : 00000000 <4>[ 0.000000] Flags: nZCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment none <4>[ 0.000000] Control: 10c5387d Table: 4020406a DAC: 00000051 <1>[ 0.000000] Register r0 information: NULL pointer <1>[ 0.000000] Register r1 information: NULL pointer <1>[ 0.000000] Register r2 information: NULL pointer <1>[ 0.000000] Register r3 information: non-slab/vmalloc memory <1>[ 0.000000] Register r4 information: non-slab/vmalloc memory <1>[ 0.000000] Register r5 information: non-paged memory <1>[ 0.000000] Register r6 information: non-slab/vmalloc memory <1>[ 0.000000] Register r7 information: non-slab/vmalloc memory <1>[ 0.000000] Register r8 information: non-slab/vmalloc memory <1>[ 0.000000] Register r9 information: non-slab/vmalloc memory <1>[ 0.000000] Register r10 information: non-paged memory <1>[ 0.000000] Register r11 information: non-slab/vmalloc memory <1>[ 0.000000] Register r12 information: non-paged memory <0>[ 0.000000] Process swapper (pid: 0, stack limit = 0x(ptrval)) <0>[ 0.000000] Stack: (0xc2201f50 to 0xc2202000) <0>[ 0.000000] 1f40: c2210c60 00000020 c1cdc50a c210a1f8 <0>[ 0.000000] 1f60: 00002000 48000000 c210a1f8 10c5387d c2201f88 c2031b70 c24d43d4 c210a17c <0>[ 0.000000] 1f80: 00000000 c24daa2c c2201fb8 c2034054 00000000 00000000 000b81a6 00000000 <0>[ 0.000000] 1fa0: 00000000 c2209f05 00000001 ffffffff 48000000 414fc0f0 c2201fc0 c202f080 <0>[ 0.000000] 1fc0: c2201ff0 c20009a4 ffffffff ffffffff 00000000 c2000ca4 c2102a6c 00000000 <0>[ 0.000000] 1fe0: c2000420 00000051 10c0387d 10c5387d 00000000 00000000 00000000 00000000 <0>[ 0.000000] __kmem_cache_create from create_boot_cache+0x9c/0xc4 <0>[ 0.000000] create_boot_cache from kmem_cache_init+0x8c/0x150 <0>[ 0.000000] kmem_cache_init from mm_core_init+0x34/0x44 <0>[ 0.000000] mm_core_init from start_kernel+0x18c/0x3b4 <0>[ 0.000000] start_kernel from 0x0 <0>[ 0.000000] Code: e3100801 1affff5b eaffff62 e7f001f2 (e7f001f2) <4>[ 0.000000] ---[ end trace 0000000000000000 ]--- <0>[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task! <0>[ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---

Details: - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230417/tes... - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230417/tes...

-- Linaro LKFT https://lkft.linaro.org