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Message-ID: <CA+G9fYuDtzPpJOX7wdWAf2QmHyc-5v0cZ2Wood8cRwCttuyRmA@mail.gmail.com> Date: Mon, 4 Aug 2025 15:41:51 +0530 From: Naresh Kamboju <naresh.kamboju@...aro.org> To: clang-built-linux <llvm@...ts.linux.dev>, open list <linux-kernel@...r.kernel.org>, lkft-triage@...ts.linaro.org, Linux Regressions <regressions@...ts.linux.dev>, linux-hardening@...r.kernel.org Cc: kees@...nel.org, "Gustavo A. R. Silva" <gustavoars@...nel.org>, Nathan Chancellor <nathan@...nel.org>, Arnd Bergmann <arnd@...db.de>, Dan Carpenter <dan.carpenter@...aro.org>, Anders Roxell <anders.roxell@...aro.org>, Ben Copeland <benjamin.copeland@...aro.org> Subject: next-20250804: clang-nightly hardening.config boot failed on arm64 rock-pi-4b Regressions found while booting the Linux next-20250804 on the qemu-arm64, dragonboard-410c, rock-pi-4b due to following kernel log. Regression Analysis: - New regression? Yes - Reproducibility? yes First seen on the next-20250804 Good: next-20250801 Bad: next-20250804 Test regression: next-20250804 clang-nightly hardening.config boot failed on arm64 rock-pi-4b Reported-by: Linux Kernel Functional Testing <lkft@...aro.org> ## Rk3399-rock-pi-4b [ 0.006047] kfence: initialized - using 2097152 bytes for 255 objects at 0x(____ptrval____)-0x(____ptrval____) [ 0.007767] Unable to handle kernel execute from non-executable memory at virtual address 00000000820d0614 [ 0.008666] Mem abort info: [ 0.008933] ESR = 0x0000000086000004 [ 0.009284] EC = 0x21: IABT (current EL), IL = 32 bits [ 0.009780] SET = 0, FnV = 0 [ 0.010074] EA = 0, S1PTW = 0 [ 0.010376] FSC = 0x04: level 0 translation fault [ 0.010834] [00000000820d0614] user address but active_mm is swapper [ 0.011424] Internal error: Oops: 0000000086000004 [#1] SMP [ 0.011954] Modules linked in: [ 0.012255] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-next-20250804 #1 PREEMPT [ 0.013053] Hardware name: Radxa ROCK Pi 4B (DT) [ 0.013486] pstate: 80500205 (Nzcv Daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 0.014138] pc : 0x820d0614 [ 0.014414] lr : start_kernel+0x1d8/0x388 [ 0.014806] sp : ffff800082703e80 [ 0.015121] x29: ffff800082703e90 x28: 0000000000000000 x27: 00000000f3ff3ad0 [ 0.015802] x26: 00000000f3f2bf18 x25: 0000000000000000 x24: 0000000000000710 [ 0.016481] x23: 0000000000000003 x22: 00000000f1f31468 x21: 00000000f1ef9000 [ 0.017160] x20: ffff80008270a000 x19: ffff800082716ac0 x18: ffff800082715ac8 [ 0.017841] x17: 0000000000000004 x16: 000000000000000c x15: 00000000000000ac [ 0.018521] x14: 0000000000000400 x13: 0000000000000000 x12: ffff0000f749b2ac [ 0.019200] x11: 0000000000000000 x10: 0000000000000002 x9 : 0000000000000006 [ 0.019880] x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 00000000b1f352b2 [ 0.020557] x5 : ffff800082703b78 x4 : 0000000000000000 x3 : ffff800082703d30 [ 0.021240] x2 : fffffffffffffb54 x1 : ffff0000f75b5180 x0 : 0000000000000000 [ 0.021921] Call trace: [ 0.022159] 0x820d0614 (P) [ 0.022433] __primary_switched+0x90/0x9c [ 0.022854] Unable to handle kernel write to read-only memory at virtual address 0000000000000008 [ 0.023677] Mem abort info: [ 0.023942] ESR = 0x0000000096000044 [ 0.024291] EC = 0x25: DABT (current EL), IL = 32 bits [ 0.024788] SET = 0, FnV = 0 [ 0.025078] EA = 0, S1PTW = 0 [ 0.025375] FSC = 0x04: level 0 translation fault [ 0.025831] Data abort info: [ 0.026103] ISV = 0, ISS = 0x00000044, ISS2 = 0x00000000 [ 0.026613] CM = 0, WnR = 1, TnD = 0, TagAccess = 0 [ 0.027088] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 0.027585] [0000000000000008] user address but active_mm is swapper ## Qemu-arm64 boot failed log <6>[ 0.000056] sched_clock: 61 bits at 1000MHz, resolution 1ns, wraps every 4398046511103ns <6>[ 0.003490] kfence: initialized - using 2097152 bytes for 255 objects at 0x(____ptrval____)-0x(____ptrval____) <2>[ 0.016829] Unhandled 64-bit el1h sync exception on CPU0, ESR 0x000000003a000000 -- PSTATE.IL <4>[ 0.018731] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-next-20250804 #1 PREEMPT <4>[ 0.018869] Hardware name: linux,dummy-virt (DT) <4>[ 0.019015] pstate: 72500209 (nZCV Daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) <4>[ 0.019099] pc : start_kernel+0x1e8/0x388 <4>[ 0.019688] lr : start_kernel+0x1d8/0x388 <4>[ 0.019706] sp : ffffb0d172f03e80 <4>[ 0.019723] x29: ffffb0d172f03e90 x28: 0000000000000000 x27: 0000000000000000 <4>[ 0.020240] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 <4>[ 0.020264] x23: 0000000000000000 x22: 0000000000000000 x21: 0000000048000000 <4>[ 0.020288] x20: ffffb0d172f0a000 x19: ffffb0d172f16ac0 x18: ffffb0d172f15ac0 <4>[ 0.020311] x17: 0000000000000000 x16: 0000000000000008 x15: 00000000000001e8 <4>[ 0.020334] x14: 0000000000000400 x13: 0000000000000000 x12: fff00000ff395f6c <4>[ 0.020357] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000002 <4>[ 0.020397] x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 00000000c333cce7 <4>[ 0.020419] x5 : 00000000f80cd09e x4 : 0000000000000000 x3 : ffffb0d172f03d30 <4>[ 0.020441] x2 : fffffffffffffb54 x1 : fff00000ff397cc0 x0 : 0000000000000000 <0>[ 0.020652] Kernel panic - not syncing: Unhandled exception <4>[ 0.020740] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-next-20250804 #1 PREEMPT <4>[ 0.020757] Hardware name: linux,dummy-virt (DT) <4>[ 0.020843] Call trace: <4>[ 0.020960] show_stack+0x18/0x28 (C) <4>[ 0.021107] __dump_stack+0x28/0x3c <4>[ 0.021136] dump_stack_lvl+0x24/0x6c <4>[ 0.021151] dump_stack+0x18/0x24 <4>[ 0.021166] vpanic+0x10c/0x384 <4>[ 0.021181] panic+0x48/0x4c <4>[ 0.021195] __panic_unhandled+0x68/0x6c <4>[ 0.021239] el1_abort+0x0/0x5c <4>[ 0.021258] el1h_64_sync+0x70/0x74 <4>[ 0.021341] start_kernel+0x1e8/0x388 (P) <4>[ 0.021359] __primary_switched+0x90/0x9c <0>[ 0.028904] ---[ end Kernel panic - not syncing: Unhandled exception ]--- ## Dragonboard-410c boot failed log [ 0.019420] Unable to handle kernel execute from non-executable memory at virtual address 0000000082150614 [ 0.028831] Unable to handle kernel write to read-only memory at virtual address 0000000000000008 [ 0.028839] Mem abort info: [ 0.028842] ESR = 0x0000000096000044 [ 0.028847] EC = 0x25: DABT (current EL), IL = 32 bits [ 0.028853] SET = 0, FnV = 0 [ 0.028858] EA = 0, S1PTW = 0 [ 0.028864] FSC = 0x04: level 0 translation fault [ 0.028869] Data abort info: [ 0.028872] ISV = 0, ISS = 0x00000044, ISS2 = 0x00000000 [ 0.028878] CM = 0, WnR = 1, TnD = 0, TagAccess = 0 [ 0.028884] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 0.028892] [0000000000000008] user address but active_mm is swapper [ 0.028899] Internal error: Oops: 0000000096000044 [#1] SMP [ 0.028907] Modules linked in: [ 0.028919] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-next-20250804 #1 PREEMPT [ 0.028932] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) [ 0.028939] pstate: 404000c5 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 0.028949] pc : ret_to_kernel+0x8/0x68 [ 0.028966] lr : el1h_64_irq+0x70/0x74 [ 0.028975] sp : ffff8000827837e0 [ 0.028981] x29: ffff800082783908 x28: ffff800082796ac0 x27: ffff800082b352c8 [ 0.028998] x26: 0000000000000000 x25: ffff800082d10000 x24: ffff800082796ac0 [ 0.029014] x23: 0000000020400205 x22: ffff8000801e3dfc x21: 0000000082149000 [ 0.029030] x20: 0000000000000000 x19: ffff8000827839f4 x18: ffff800082795b30 [ 0.029046] x17: 00000000a540670c x16: 00000000a540670c x15: 00000000000a0d34 [ 0.029062] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 0.029078] x11: 0000000000000000 x10: ffff800082796ac0 x9 : ffff800082745598 [ 0.029093] x8 : 0000000000000000 x7 : 205d303234393130 x6 : 302e30202020205b [ 0.029109] x5 : ffff800082d111c8 x4 : ffff8000827837b7 x3 : ffff8000827837e0 [ 0.029125] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff800082d10f7c [ 0.029141] Call trace: [ 0.029146] ret_to_kernel+0x8/0x68 (P) [ 0.029161] console_flush_all+0x2ac/0x3cc (P) [ 0.029175] console_unlock+0x80/0x17c [ 0.029191] vprintk_emit+0x208/0x2ac [ 0.029208] vprintk_default+0x44/0x70 [ 0.029225] vprintk+0x34/0xb4 [ 0.029236] _printk+0x54/0x80 [ 0.029249] die_kernel_fault+0x40/0x74 [ 0.029261] vma_end_read+0x0/0x94 [ 0.029277] do_page_fault+0x44/0x768 [ 0.029292] do_translation_fault+0x4c/0x68 [ 0.029307] do_mem_abort+0x54/0xa8 [ 0.029322] el1_abort+0x3c/0x5c [ 0.029335] el1h_64_sync_handler+0x50/0xfc [ 0.029346] el1h_64_sync+0x70/0x74 [ 0.029358] 0x82150614 (P) [ 0.029368] __primary_switched+0x90/0x9c [ 0.029393] Code: 944fdb51 d5184035 d5184016 a94007e0 (a800ada6) [ 0.029401] ---[ end trace 0000000000000000 ]--- [ 0.029408] Kernel panic - not syncing: Attempted to kill the idle task! [ 0.282802] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]--- Rock-pi-4b - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804/testrun/29369027/suite/boot/test/clang-nightly-lkftconfig-hardening/log - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804/testrun/29369027/suite/boot/test/clang-nightly-lkftconfig-hardening/details/ Qemu-arm64 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804/testrun/29368323/suite/boot/test/clang-nightly-lkftconfig-hardening/log - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804/testrun/29368323/suite/boot/test/clang-nightly-lkftconfig-hardening/details/ Dragonboard-410c - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804/testrun/29368937/suite/boot/test/clang-nightly-lkftconfig-hardening/details/ - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804/testrun/29368937/suite/boot/test/clang-nightly-lkftconfig-hardening/log ## Source * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git sha: 5c5a10f0be967a8950a2309ea965bae54251b50e * Git describe: next-20250804 * Project details: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804 * Architectures: arm64 * Toolchains: clang-nigtly Debian clang version 22.0.0 (++20250803105249+e640ca8b9adc-1~exp1~20250803225437.1615) * Kconfigs: hardening.config ## Build * Test history: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250804/testrun/29368937/suite/boot/test/clang-nightly-lkftconfig-hardening/history/ * Test history 1: https://regressions.linaro.org/lkft/linux-next-master/next-20250804/boot/clang-nightly-lkftconfig-hardening/ * Test plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/30oCAKqSuQzYzKbypjmyC5lVNoC * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/30oC7nI5ieJMRpDzpr0LBsg5Tnp/ * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/30oC7nI5ieJMRpDzpr0LBsg5Tnp/config -- Linaro LKFT https://lkft.linaro.org
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