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AGHT+IGAPsB8fOGFnMsc5bbDL/20Hc4p5mldlRlSsXETttbyejgn8/EaugsjmRRuL/VRAqS5GhQVa3kdI+AXpngBYvA= X-Received: by 2002:a05:6102:2c82:b0:4ba:9689:8725 with SMTP id ada2fe7eead31-4bd3fd51580mr13177418137.14.1740068728182; Thu, 20 Feb 2025 08:25:28 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Naresh Kamboju Date: Thu, 20 Feb 2025 21:55:17 +0530 X-Gm-Features: AWEUYZn1l7Lv2Zb-WyCLSGTtO5qeqIeMQIdyyZsol69LDhzeihx6MkTJeGQixZg Message-ID: Subject: Re: next-20250218: arm64 LTP pids kernel panic loop_free_idle_workers To: linux-block , Cgroups , Linux ARM , linux-mm , open list , lkft-triage@lists.linaro.org, LTP List Cc: Jens Axboe , Andrew Morton , Thomas Gleixner , Roman Gushchin , Arnd Bergmann , Dan Carpenter , Anders Roxell Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 6385A160010 X-Stat-Signature: dgp3oyxpp33nf3cuumns43fo84fhe83c X-HE-Tag: 1740068729-209086 X-HE-Meta: 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 zidArVLN MBQwwtIRUWU3viFKCu5UW2XsZ+YVDJBLJnx6LpvJD02A6Y80wrCtr6VmcZY9WQrNkx6o4NiuA/cz9fX3dg7K1UIfwqxh3X74UbcUSkk69EQI/eJ6Gonk72o2Kf/QUPMY4jx2mShMbuE8/hcdg1Cv8CwSRYeay5YKcnR3c08fz0/QVr0x8tbcBF5r9ce5UwJERJHyq9ROpTSIk1Lso+BGKFyn/MqnAZdXcKBfUEVMvzXRbGuXptjoX7SYP4Qz07Og7aa4xkqkkdjGcg57ZjLxti6DT3HMVDWJGJjRWd6u9B/aSWGazaYluhFT+8JCpFuUxWPUyBI3CKLSCXoCy5gGXkf0bpSvfWA1jilmkb+Z7e6+J7BgI6dycCg3gCsZs5oYIhZN5 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 20 Feb 2025 at 21:43, Naresh Kamboju wr= ote: > > Regression on qemu-arm64 the kernel panic noticed while running the > LTP controllers pids.sh test cases on Linux next 20250218 and started > from the next-20250214 > > Test regression: arm64 LTP pids kernel panic loop_free_idle_workers > > Started noticing from next-20250214. > Good: next-20250213 > Bad: next-20250213..next-20250218 [Sorry typo ] Bad: next-20250214..next-20250218 > > Reported-by: Linux Kernel Functional Testing > > Boot log: > --------- > [ 0.000000] Linux version 6.14.0-rc2-next-20250214 > (tuxmake@tuxmake) (aarch64-linux-gnu-gcc (Debian 13.3.0-12) 13.3.0, > GNU ld (GNU Binutils for Debian) 2.43.90.20250127) #1 SMP PREEMPT > @1739528119 > > command: pids.sh 6 50 0 > <12>[ 221.776255] /usr/local/bin/kirk[262]: starting test pids_6_50 > (pids.sh 6 50 0) > pids 1 TINFO: Running: pids.sh 6 50 0 > pids 1 TINFO: Tested kernel: Linux > runner-ykxhnyexq-project-40964107-concurrent-0 > 6.14.0-rc2-next-20250214 #1 SMP PREEMPT @1739528119 aarch64 GNU/Linux > pids 1 TINFO: ceiling LTP_TIMEOUT_MUL to 11 > pids 1 TINFO: timeout per run is 0h 55m 0s > pids 1 TINFO: test starts with cgroup version 2 > pids 1 TINFO: Running testcase 6 with 50 processes > pids 1 TINFO: set a limit that is smaller than current number of pids > <1>[ 224.406844] Unable to handle kernel paging request at virtual > address dead000000000108 > <1>[ 224.407052] Mem abort info: > <1>[ 224.407100] ESR =3D 0x0000000096000044 > <1>[ 224.407219] EC =3D 0x25: DABT (current EL), IL =3D 32 bits > <1>[ 224.407315] SET =3D 0, FnV =3D 0 > <1>[ 224.407400] EA =3D 0, S1PTW =3D 0 > <1>[ 224.407459] FSC =3D 0x04: level 0 translation fault > <1>[ 224.407536] Data abort info: > <1>[ 224.407577] ISV =3D 0, ISS =3D 0x00000044, ISS2 =3D 0x00000000 > <1>[ 224.407621] CM =3D 0, WnR =3D 1, TnD =3D 0, TagAccess =3D 0 > <1>[ 224.407697] GCS =3D 0, Overlay =3D 0, DirtyBit =3D 0, Xs =3D 0 > <1>[ 224.407809] [dead000000000108] address between user and kernel > address ranges > <0>[ 224.408307] Internal error: Oops: 0000000096000044 [#1] PREEMPT SMP > <4>[ 224.416979] Modules linked in: btrfs blake2b_generic xor > xor_neon raid6_pq zstd_compress sm3_ce sm3 sha3_ce sha512_ce > sha512_arm64 fuse drm backlight ip_tables x_tables > <4>[ 224.421352] CPU: 0 UID: 0 PID: 3368 Comm: pids_task2 Not tainted > 6.14.0-rc2-next-20250214 #1 > <4>[ 224.422657] Hardware name: linux,dummy-virt (DT) > <4>[ 224.423946] pstate: 224020c9 (nzCv daIF +PAN -UAO +TCO -DIT > -SSBS BTYPE=3D--) > <4>[ 224.424677] pc : loop_free_idle_workers (include/linux/list.h:195 > include/linux/list.h:218 include/linux/list.h:229 > drivers/block/loop.c:917) > <4>[ 224.426548] lr : loop_free_idle_workers (drivers/block/loop.c:911 > (discriminator 2)) > <4>[ 224.427338] sp : ffff800080003d50 > <4>[ 224.427910] x29: ffff800080003d50 x28: fff238a88301c500 x27: > fff238a883084c00 > <4>[ 224.429587] x26: ffffa298bac57000 x25: ffffffffffffc568 x24: > dead000000000122 > <4>[ 224.430697] x23: fff238a880370ac8 x22: dead000000000100 x21: > 0000000000000000 > <4>[ 224.432004] x20: fff238a880370ab8 x19: dead0000000000b8 x18: > ffff800083d9bb90 > <4>[ 224.432538] x17: fff296100496b000 x16: ffff800080000000 x15: > 0000ffff8d0a9fff > <4>[ 224.433866] x14: 0000000000000000 x13: 1ffe47151065cc61 x12: > fff238a8832e630c > <4>[ 224.434769] x11: 003a9cb01550c679 x10: fff238a8bf4b7f70 x9 : > ffffa298b8fc3cd0 > <4>[ 224.436209] x8 : ffff800080003c28 x7 : 0000000000000101 x6 : > ffff800080003ce0 > <4>[ 224.437070] x5 : fff238a880eba680 x4 : dead000000000100 x3 : > dead000000000122 > <4>[ 224.438027] x2 : 0000000000000000 x1 : 00000000ffff50fc x0 : > 00000000ffff7b68 > <4>[ 224.439174] Call trace: > <4>[ 224.439882] loop_free_idle_workers (include/linux/list.h:195 > include/linux/list.h:218 include/linux/list.h:229 > drivers/block/loop.c:917) (P) > <4>[ 224.440765] loop_free_idle_workers_timer (drivers/block/loop.c:932) > <4>[ 224.441223] call_timer_fn (arch/arm64/include/asm/jump_label.h:36 > include/trace/events/timer.h:127 kernel/time/timer.c:1790) > <4>[ 224.441822] __run_timers (kernel/time/timer.c:1841 > kernel/time/timer.c:2414) > <4>[ 224.442389] run_timer_base (kernel/time/timer.c:2427 > kernel/time/timer.c:2418 kernel/time/timer.c:2435) > <4>[ 224.442855] run_timer_softirq > (arch/arm64/include/asm/jump_label.h:36 kernel/time/timer.c:342 > kernel/time/timer.c:2448) > <4>[ 224.443547] handle_softirqs > (arch/arm64/include/asm/jump_label.h:36 include/trace/events/irq.h:142 > kernel/softirq.c:562) > <4>[ 224.444121] __do_softirq (kernel/softirq.c:596) > <4>[ 224.444755] ____do_softirq (arch/arm64/kernel/irq.c:82) > <4>[ 224.445204] call_on_irq_stack (arch/arm64/kernel/entry.S:897) > <4>[ 224.445670] do_softirq_own_stack (arch/arm64/kernel/irq.c:87) > <4>[ 224.445964] __irq_exit_rcu (kernel/softirq.c:442 kernel/softirq.c:66= 2) > <4>[ 224.446295] irq_exit_rcu (kernel/softirq.c:680) > <4>[ 224.446808] el1_interrupt (arch/arm64/include/asm/current.h:19 > arch/arm64/kernel/entry-common.c:280 > arch/arm64/kernel/entry-common.c:563 > arch/arm64/kernel/entry-common.c:575) > <4>[ 224.447585] el1h_64_irq_handler (arch/arm64/kernel/entry-common.c:58= 1) > <4>[ 224.448079] el1h_64_irq (arch/arm64/kernel/entry.S:596) > <4>[ 224.448796] try_charge_memcg (mm/memcontrol.c:1803 > mm/memcontrol.c:2222) (P) > <4>[ 224.449589] charge_memcg (mm/memcontrol.c:4541) > <4>[ 224.450399] __mem_cgroup_charge (include/linux/cgroup_refcnt.h:78 > mm/memcontrol.c:4558) > <4>[ 224.451234] __handle_mm_fault (mm/memory.c:1059 (discriminator 1) > mm/memory.c:5462 (discriminator 1) mm/memory.c:5574 (discriminator 1) > mm/memory.c:4091 (discriminator 1) mm/memory.c:5935 (discriminator 1) > mm/memory.c:6078 (discriminator 1)) > <4>[ 224.451763] handle_mm_fault (mm/memory.c:6247) > <4>[ 224.452307] do_page_fault (arch/arm64/mm/fault.c:647) > <4>[ 224.452881] do_translation_fault (arch/arm64/mm/fault.c:787) > <4>[ 224.453358] do_mem_abort (arch/arm64/mm/fault.c:919 (discriminator 1= )) > <4>[ 224.453890] el0_da (arch/arm64/include/asm/irqflags.h:82 > (discriminator 1) arch/arm64/include/asm/irqflags.h:123 (discriminator > 1) arch/arm64/include/asm/irqflags.h:136 (discriminator 1) > arch/arm64/kernel/entry-common.c:165 (discriminator 1) > arch/arm64/kernel/entry-common.c:178 (discriminator 1) > arch/arm64/kernel/entry-common.c:605 (discriminator 1)) > <4>[ 224.454329] el0t_64_sync_handler (arch/arm64/kernel/entry-common.c:7= 66) > <4>[ 224.454897] el0t_64_sync (arch/arm64/kernel/entry.S:600) > <0>[ 224.455654] Code: 8b190000 eb01001f 54000684 a9448f84 (f9000483) > All code > =3D=3D=3D=3D=3D=3D=3D=3D > 0: 8b190000 add x0, x0, x25 > 4: eb01001f cmp x0, x1 > 8: 54000684 b.mi 0xd8 // b.first > c: a9448f84 ldp x4, x3, [x28, #72] > 10:* f9000483 str x3, [x4, #8] <-- trapping instruction > > Code starting with the faulting instruction > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > 0: f9000483 str x3, [x4, #8] > <4>[ 224.456945] ---[ end trace 0000000000000000 ]--- > <0>[ 224.458162] Kernel panic - not syncing: Oops: Fatal exception in in= terrupt > <2>[ 224.459437] SMP: stopping secondary CPUs > <0>[ 224.460808] Kernel Offset: 0x229838400000 from 0xffff800080000000 > <0>[ 224.461525] PHYS_OFFSET: 0xfffdc75880000000 > <0>[ 224.462166] CPU features: 0x000,000000d0,60bef2f8,cb7e7f3f > <0>[ 224.463148] Memory Limit: none > <0>[ 224.463861] ---[ end Kernel panic - not syncing: Oops: Fatal > exception in interrupt ]--- > > ## Source > * Kernel version: 6.14.0-rc2-next-20250214 > * Git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-ne= xt.git > * Git sha: 0ae0fa3bf0b44c8611d114a9f69985bf451010c3 > * Git describe: next-20250214 > * Project details: > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250214/ > > ## Build > * Test log: https://qa-reports.linaro.org/lkft/linux-next-master/build/ne= xt-20250214/testrun/27292264/suite/log-parser-test/test/panic-multiline-ker= nel-panic-not-syncing-oops-fatal-exception-in-interrupt-89d94046139a63ab8ef= 657ef456dab84b63ef36eb42dc7c556dfa0f7a59423da/log > * Test history: > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250214/= testrun/27292264/suite/log-parser-test/test/panic-multiline-kernel-panic-no= t-syncing-oops-fatal-exception-in-interrupt-89d94046139a63ab8ef657ef456dab8= 4b63ef36eb42dc7c556dfa0f7a59423da/history/ > * Test details: > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250214/= testrun/27292264/suite/log-parser-test/test/panic-multiline-kernel-panic-no= t-syncing-oops-fatal-exception-in-interrupt-89d94046139a63ab8ef657ef456dab8= 4b63ef36eb42dc7c556dfa0f7a59423da/ > * Kernel config: > https://storage.tuxsuite.com/public/linaro/lkft/builds/2t1m4RtgCbRZ2vhQrd= EIwwj3DIY/config > * Architecures: arm64 > * Toolchain version: gcc-13 > > -- > Linaro LKFT > https://lkft.linaro.org