On 3/23/23 08:35, Naresh Kamboju wrote: > The following kernel crash was noticed on arm x15, arm64 hikey-6220, Juno-r2, > x86_64 and i386 devices on Linux next-20230323. > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > crash log on arm64: > --------------- > [ 19.281223] Unable to handle kernel paging request at virtual > address 0000000000100111 > [ 19.289189] Mem abort info: > [ 19.291995] ESR = 0x0000000096000006 > [ 19.295757] EC = 0x25: DABT (current EL), IL = 32 bits > [ 19.301086] SET = 0, FnV = 0 > [ 19.304151] EA = 0, S1PTW = 0 > [ 19.307302] FSC = 0x06: level 2 translation fault > [ 19.312194] Data abort info: > [ 19.315083] ISV = 0, ISS = 0x00000006 > [ 19.318930] CM = 0, WnR = 0 > [ 19.321901] user pgtable: 4k pages, 48-bit VAs, pgdp=00000008a23c5000 > [ 19.328374] [0000000000100111] pgd=08000008a14c5003, > p4d=08000008a14c5003, pud=08000008a14c6003, pmd=0000000000000000 > [ 19.339037] Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP > [ 19.345315] Modules linked in: > [ 19.348373] CPU: 2 PID: 1 Comm: init Not tainted 6.3.0-rc3-next-20230323 #1 next-20230323 seems to contain v2 of Lorenzo's vma_merge cleanups > [ 19.355347] Hardware name: ARM Juno development board (r2) (DT) > [ 19.361273] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 19.368246] pc : vma_merge (mm/mmap.c:952 (discriminator 1)) And this is a line involving 'next' and Liam pointed out a possibly unitialized next in v2, so that's probably it. Andrew replaced it with a fixed version so it should make its way to -next as well. > [ 19.371917] lr : vma_merge (mm/mmap.c:945) > [ 19.375670] sp : ffff80000b37bb40 > [ 19.378985] x29: ffff80000b37bb40 x28: ffff000820c0ff20 x27: 0000000000000000 > [ 19.386139] x26: ffff000820c17210 x25: ffff000800bfac00 x24: 0000ffff8e8b7000 > [ 19.393293] x23: 0000000000100071 x22: ffff000800898d80 x21: 0000000000100071 > [ 19.400446] x20: ffff80000b37bd18 x19: 0000ffff8e8ba000 x18: ffff80000b37bd18 > [ 19.407599] x17: 0000000000000000 x16: ffff8000099a58c8 x15: 0000ffff8e9aefff > [ 19.414752] x14: 0000ffff8e8b7000 x13: 1fffe001041bb361 x12: ffff80000b37baf8 > [ 19.421905] x11: ffff000822473400 x10: ffff000820dd9b08 x9 : ffff80000830fc64 > [ 19.429057] x8 : 0000ffff8e8b7000 x7 : 0000ffff8e8b7000 x6 : ffff000820dd9b50 > [ 19.436210] x5 : ffff000820c0ff20 x4 : 0000000000000187 x3 : ffff000800bfac00 > [ 19.443363] x2 : 0000000000000000 x1 : 0000000000100071 x0 : 0000000000000000 > [ 19.450515] Call trace: > [ 19.452960] vma_merge (mm/mmap.c:952 (discriminator 1)) > [ 19.456279] mprotect_fixup (mm/mprotect.c:676) > [ 19.460034] do_mprotect_pkey.constprop.0 (mm/mprotect.c:862) > [ 19.465094] __arm64_sys_mprotect (mm/mprotect.c:880) > [ 19.469283] invoke_syscall (arch/arm64/include/asm/current.h:19 > arch/arm64/kernel/syscall.c:57) > [ 19.473041] el0_svc_common (arch/arm64/include/asm/daifflags.h:28 > arch/arm64/kernel/syscall.c:150) > [ 19.476796] do_el0_svc (arch/arm64/kernel/syscall.c:194) > [ 19.480117] el0_svc (arch/arm64/include/asm/daifflags.h:28 > arch/arm64/kernel/entry-common.c:133 > arch/arm64/kernel/entry-common.c:142 > arch/arm64/kernel/entry-common.c:638) > [ 19.483177] el0t_64_sync_handler (arch/arm64/kernel/entry-common.c:656) > [ 19.487454] el0t_64_sync (arch/arm64/kernel/entry.S:591) > [ 19.491123] Code: eb18001f 54000800 52800002 b40004d7 (f94052e1) > All code > ======== > 0:* 1f (bad) <-- trapping instruction > 1: 00 18 add %bl,(%rax) > 3: eb 00 jmp 0x5 > 5: 08 00 or %al,(%rax) > 7: 54 push %rsp > 8: 02 00 add (%rax),%al > a: 80 52 d7 04 adcb $0x4,-0x29(%rdx) > e: 00 .byte 0x0 > f: b4 e1 mov $0xe1,%ah > 11: 52 push %rdx > 12: 40 f9 rex stc > > Code starting with the faulting instruction > =========================================== > 0: e1 52 loope 0x54 > 2: 40 f9 rex stc Looks like an x86 decodecode of arm64 code :) calling a wrong objdump or something? > [ 19.497226] ---[ end trace 0000000000000000 ]--- > [ 19.501883] Kernel panic - not syncing: Attempted to kill init! > exitcode=0x0000000b > [ 19.509551] SMP: stopping secondary CPUs > [ 19.513665] Kernel Offset: disabled > [ 19.517152] CPU features: 0x400002,0c3c0400,0000421b > [ 19.522123] Memory Limit: none > [ 19.525181] ---[ end Kernel panic - not syncing: Attempted to kill > init! exitcode=0x0000000b ]--- > > > metadata: > git_ref: master > git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next > git_sha: 7c4a254d78f89546d0e74a40617ef24c6151c8d1 > git_describe: next-20230323 > kernel_version: 6.3.0-rc3 > kernel-config: > https://storage.tuxsuite.com/public/linaro/lkft/builds/2NOjwfRUa0fjWWZBWCUG4Ypift7/config > build-url: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/815177945 > artifact-location: > https://storage.tuxsuite.com/public/linaro/lkft/builds/2NOjwfRUa0fjWWZBWCUG4Ypift7 > toolchain: gcc-11 > > > -- > Linaro LKFT > https://lkft.linaro.org >
