* Re: [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops [not found] <20251203042850.14210-1-val@packett.cool> @ 2025-12-10 8:40 ` kernel test robot 2025-12-10 9:13 ` Ard Biesheuvel 0 siblings, 1 reply; 3+ messages in thread From: kernel test robot @ 2025-12-10 8:40 UTC (permalink / raw) To: Val Packett Cc: oe-lkp, lkp, linux-hardening, Kees Cook, Tony Luck, Guilherme G. Piccoli, Ard Biesheuvel, Val Packett, linux-efi, linux-kernel, oliver.sang Hello, kernel test robot noticed "WARNING:at_kernel/locking/rwsem.c:#__down_write_trylock" on: commit: 6f473fefec79a8ba24013a5676a93934ee5ac922 ("[PATCH] efi: pstore: Support late setup with TEE-backed efivars ops") url: https://github.com/intel-lab-lkp/linux/commits/Val-Packett/efi-pstore-Support-late-setup-with-TEE-backed-efivars-ops/20251203-123406 base: https://git.kernel.org/cgit/linux/kernel/git/kees/linux.git for-next/pstore patch link: https://lore.kernel.org/all/20251203042850.14210-1-val@packett.cool/ patch subject: [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops in testcase: boot config: i386-randconfig-015-20251207 compiler: clang-20 test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G (please refer to attached dmesg/kmsg for entire log/backtrace) +---------------------------------------------------------+------------+------------+ | | b692553573 | 6f473fefec | +---------------------------------------------------------+------------+------------+ | WARNING:at_kernel/locking/rwsem.c:#__down_write_trylock | 0 | 18 | | EIP:__down_write_trylock | 0 | 18 | | WARNING:at_kernel/locking/rwsem.c:#up_write | 0 | 18 | | EIP:up_write | 0 | 18 | +---------------------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <oliver.sang@intel.com> | Closes: https://lore.kernel.org/oe-lkp/202512101632.a94de49b-lkp@intel.com [ 7.731121][ T1] ------------[ cut here ]------------ [ 7.731800][ T1] DEBUG_RWSEMS_WARN_ON(sem->magic != sem): count = 0x0, magic = 0x0, owner = 0x0, curr 0xc0288000, list not empty [ 7.733282][ T1] WARNING: CPU: 0 PID: 1 at kernel/locking/rwsem.c:1339 __down_write_trylock (kernel/locking/rwsem.c:1339) [ 7.734420][ T1] Modules linked in: [ 7.734903][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.18.0-rc2-00002-g6f473fefec79 #1 PREEMPT(none) [ 7.736185][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 7.737529][ T1] EIP: __down_write_trylock (kernel/locking/rwsem.c:1339) [ 7.738173][ T1] Code: c1 92 28 c2 bf 39 3e 26 c2 0f 44 fa 57 50 ff 71 04 56 ff 31 68 dc f4 35 c2 68 fe 5b 35 c2 89 cf e8 81 d1 e8 ff 89 f9 83 c4 1c <0f> 0b 39 ce 0f 85 4b ff ff ff e9 4f ff ff ff 0f 0b eb 8b 90 90 90 All code ======== 0: c1 92 28 c2 bf 39 3e rcll $0x3e,0x39bfc228(%rdx) 7: 26 c2 0f 44 es ret $0x440f b: fa cli c: 57 push %rdi d: 50 push %rax e: ff 71 04 push 0x4(%rcx) 11: 56 push %rsi 12: ff 31 push (%rcx) 14: 68 dc f4 35 c2 push $0xffffffffc235f4dc 19: 68 fe 5b 35 c2 push $0xffffffffc2355bfe 1e: 89 cf mov %ecx,%edi 20: e8 81 d1 e8 ff call 0xffffffffffe8d1a6 25: 89 f9 mov %edi,%ecx 27: 83 c4 1c add $0x1c,%esp 2a:* 0f 0b ud2 <-- trapping instruction 2c: 39 ce cmp %ecx,%esi 2e: 0f 85 4b ff ff ff jne 0xffffffffffffff7f 34: e9 4f ff ff ff jmp 0xffffffffffffff88 39: 0f 0b ud2 3b: eb 8b jmp 0xffffffffffffffc8 3d: 90 nop 3e: 90 nop 3f: 90 nop Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 39 ce cmp %ecx,%esi 4: 0f 85 4b ff ff ff jne 0xffffffffffffff55 a: e9 4f ff ff ff jmp 0xffffffffffffff5e f: 0f 0b ud2 11: eb 8b jmp 0xffffffffffffff9e 13: 90 nop 14: 90 nop 15: 90 nop [ 7.740468][ T1] EAX: 58e1ae7d EBX: c33977c0 ECX: c33977c0 EDX: 00000000 [ 7.741422][ T1] ESI: 00000000 EDI: c33977c0 EBP: c0293bf0 ESP: c0293be8 [ 7.742277][ T1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010296 [ 7.743199][ T1] CR0: 80050033 CR2: ffd38000 CR3: 02b87000 CR4: 000406d0 [ 7.744043][ T1] Call Trace: [ 7.744429][ T1] ? blocking_notifier_chain_register (kernel/notifier.c:264) [ 7.745251][ T1] down_write (kernel/locking/rwsem.c:1591) [ 7.745755][ T1] blocking_notifier_chain_register (kernel/notifier.c:264) [ 7.746473][ T1] efivars_pstore_init (drivers/firmware/efi/efi-pstore.c:258 drivers/firmware/efi/efi-pstore.c:306) [ 7.747059][ T1] do_one_initcall (init/main.c:1283) [ 7.747623][ T1] ? last_attempt_status_show (drivers/firmware/efi/efi-pstore.c:299) [ 7.748291][ T1] ? local_clock (arch/x86/include/asm/preempt.h:95 kernel/sched/clock.c:319) [ 7.748949][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 7.749590][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 7.750218][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271) [ 7.750828][ T1] ? local_clock_noinstr (kernel/sched/clock.c:272 kernel/sched/clock.c:309) [ 7.751477][ T1] ? local_clock (arch/x86/include/asm/preempt.h:95 kernel/sched/clock.c:319) [ 7.752042][ T1] ? ktime_get (include/linux/seqlock.h:226) [ 7.752565][ T1] ? kvm_clock_get_cycles (arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 7.753268][ T1] ? ktime_get (kernel/time/timekeeping.c:295 kernel/time/timekeeping.c:404 kernel/time/timekeeping.c:826) [ 7.753775][ T1] ? local_clock_noinstr (kernel/sched/clock.c:272 kernel/sched/clock.c:309) [ 7.754393][ T1] ? clockevents_program_event (kernel/time/clockevents.c:336) [ 7.755098][ T1] ? tick_program_event (kernel/time/tick-oneshot.c:44) [ 7.755720][ T1] ? hrtimer_interrupt (kernel/time/hrtimer.c:1916) [ 7.756331][ T1] ? irqentry_exit (kernel/entry/common.c:?) [ 7.756993][ T1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052) [ 7.757704][ T1] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:80) [ 7.758306][ T1] ? irqentry_exit (kernel/entry/common.c:?) [ 7.758860][ T1] ? sysvec_call_function_single (arch/x86/kernel/apic/apic.c:1052) [ 7.759562][ T1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052) [ 7.760261][ T1] ? handle_exception (arch/x86/entry/entry_32.S:1048) [ 7.760967][ T1] ? __get_immptr (arch/x86/lib/insn.c:632) [ 7.761517][ T1] ? parameq (kernel/params.c:81 kernel/params.c:91 kernel/params.c:99) [ 7.762011][ T1] ? __get_immptr (arch/x86/lib/insn.c:632) [ 7.762540][ T1] ? next_arg (lib/cmdline.c:273) [ 7.763050][ T1] ? parameq (kernel/params.c:90 kernel/params.c:99) [ 7.763551][ T1] ? parse_args (kernel/params.c:153) [ 7.764127][ T1] do_initcall_level (init/main.c:1344) [ 7.764819][ T1] do_initcalls (init/main.c:1358) [ 7.765347][ T1] ? kernel_init (init/main.c:1485) [ 7.765895][ T1] do_basic_setup (init/main.c:1381) [ 7.766432][ T1] kernel_init_freeable (init/main.c:1597) [ 7.767049][ T1] ? rest_init (init/main.c:1475) [ 7.767587][ T1] ? rest_init (init/main.c:1475) [ 7.768125][ T1] kernel_init (init/main.c:1485) [ 7.768686][ T1] ret_from_fork (arch/x86/kernel/process.c:164) [ 7.769276][ T1] ? __switch_to_asm (arch/x86/entry/entry_32.S:704) [ 7.769852][ T1] ? __switch_to_asm (arch/x86/entry/entry_32.S:704) [ 7.770427][ T1] ? __switch_to_asm (arch/x86/entry/entry_32.S:704) [ 7.771001][ T1] ? rest_init (init/main.c:1475) [ 7.771535][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 7.771957][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) [ 7.772338][ T1] irq event stamp: 108765 [ 7.772712][ T1] hardirqs last enabled at (108773): __console_unlock (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:109 arch/x86/include/asm/irqflags.h:151 kernel/printk/printk.c:345 kernel/printk/printk.c:2858) [ 7.773432][ T1] hardirqs last disabled at (108782): __console_unlock (kernel/printk/printk.c:343) [ 7.774123][ T1] softirqs last enabled at (108714): __do_softirq (kernel/softirq.c:657) [ 7.774782][ T1] softirqs last disabled at (108699): __do_softirq (kernel/softirq.c:657) [ 7.775441][ T1] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20251210/202512101632.a94de49b-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops 2025-12-10 8:40 ` [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops kernel test robot @ 2025-12-10 9:13 ` Ard Biesheuvel 2025-12-10 14:28 ` Kees Cook 0 siblings, 1 reply; 3+ messages in thread From: Ard Biesheuvel @ 2025-12-10 9:13 UTC (permalink / raw) To: Kees Cook Cc: Val Packett, oe-lkp, lkp, linux-hardening, Tony Luck, Guilherme G. Piccoli, linux-efi, linux-kernel, oliver.sang On Wed, 10 Dec 2025 at 17:41, kernel test robot <oliver.sang@intel.com> wrote: > > > > Hello, > > kernel test robot noticed "WARNING:at_kernel/locking/rwsem.c:#__down_write_trylock" on: > > commit: 6f473fefec79a8ba24013a5676a93934ee5ac922 ("[PATCH] efi: pstore: Support late setup with TEE-backed efivars ops") > url: https://github.com/intel-lab-lkp/linux/commits/Val-Packett/efi-pstore-Support-late-setup-with-TEE-backed-efivars-ops/20251203-123406 > base: https://git.kernel.org/cgit/linux/kernel/git/kees/linux.git for-next/pstore > patch link: https://lore.kernel.org/all/20251203042850.14210-1-val@packett.cool/ > patch subject: [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops > > in testcase: boot > > config: i386-randconfig-015-20251207 > compiler: clang-20 > test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G > > (please refer to attached dmesg/kmsg for entire log/backtrace) > > > +---------------------------------------------------------+------------+------------+ > | | b692553573 | 6f473fefec | > +---------------------------------------------------------+------------+------------+ > | WARNING:at_kernel/locking/rwsem.c:#__down_write_trylock | 0 | 18 | > | EIP:__down_write_trylock | 0 | 18 | > | WARNING:at_kernel/locking/rwsem.c:#up_write | 0 | 18 | > | EIP:up_write | 0 | 18 | > +---------------------------------------------------------+------------+------------+ > This seems to be a non-EFI boot, in which case the notifier chain is never initialized. Kees, can you drop this from your branch so we can get it fixed? I also had some review feedback that hasn't been taken into account yet. > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <oliver.sang@intel.com> > | Closes: https://lore.kernel.org/oe-lkp/202512101632.a94de49b-lkp@intel.com > > > [ 7.731121][ T1] ------------[ cut here ]------------ > [ 7.731800][ T1] DEBUG_RWSEMS_WARN_ON(sem->magic != sem): count = 0x0, magic = 0x0, owner = 0x0, curr 0xc0288000, list not empty > [ 7.733282][ T1] WARNING: CPU: 0 PID: 1 at kernel/locking/rwsem.c:1339 __down_write_trylock (kernel/locking/rwsem.c:1339) > [ 7.734420][ T1] Modules linked in: > [ 7.734903][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.18.0-rc2-00002-g6f473fefec79 #1 PREEMPT(none) > [ 7.736185][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 > [ 7.737529][ T1] EIP: __down_write_trylock (kernel/locking/rwsem.c:1339) > [ 7.738173][ T1] Code: c1 92 28 c2 bf 39 3e 26 c2 0f 44 fa 57 50 ff 71 04 56 ff 31 68 dc f4 35 c2 68 fe 5b 35 c2 89 cf e8 81 d1 e8 ff 89 f9 83 c4 1c <0f> 0b 39 ce 0f 85 4b ff ff ff e9 4f ff ff ff 0f 0b eb 8b 90 90 90 > All code > ======== > 0: c1 92 28 c2 bf 39 3e rcll $0x3e,0x39bfc228(%rdx) > 7: 26 c2 0f 44 es ret $0x440f > b: fa cli > c: 57 push %rdi > d: 50 push %rax > e: ff 71 04 push 0x4(%rcx) > 11: 56 push %rsi > 12: ff 31 push (%rcx) > 14: 68 dc f4 35 c2 push $0xffffffffc235f4dc > 19: 68 fe 5b 35 c2 push $0xffffffffc2355bfe > 1e: 89 cf mov %ecx,%edi > 20: e8 81 d1 e8 ff call 0xffffffffffe8d1a6 > 25: 89 f9 mov %edi,%ecx > 27: 83 c4 1c add $0x1c,%esp > 2a:* 0f 0b ud2 <-- trapping instruction > 2c: 39 ce cmp %ecx,%esi > 2e: 0f 85 4b ff ff ff jne 0xffffffffffffff7f > 34: e9 4f ff ff ff jmp 0xffffffffffffff88 > 39: 0f 0b ud2 > 3b: eb 8b jmp 0xffffffffffffffc8 > 3d: 90 nop > 3e: 90 nop > 3f: 90 nop > > Code starting with the faulting instruction > =========================================== > 0: 0f 0b ud2 > 2: 39 ce cmp %ecx,%esi > 4: 0f 85 4b ff ff ff jne 0xffffffffffffff55 > a: e9 4f ff ff ff jmp 0xffffffffffffff5e > f: 0f 0b ud2 > 11: eb 8b jmp 0xffffffffffffff9e > 13: 90 nop > 14: 90 nop > 15: 90 nop > [ 7.740468][ T1] EAX: 58e1ae7d EBX: c33977c0 ECX: c33977c0 EDX: 00000000 > [ 7.741422][ T1] ESI: 00000000 EDI: c33977c0 EBP: c0293bf0 ESP: c0293be8 > [ 7.742277][ T1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010296 > [ 7.743199][ T1] CR0: 80050033 CR2: ffd38000 CR3: 02b87000 CR4: 000406d0 > [ 7.744043][ T1] Call Trace: > [ 7.744429][ T1] ? blocking_notifier_chain_register (kernel/notifier.c:264) > [ 7.745251][ T1] down_write (kernel/locking/rwsem.c:1591) > [ 7.745755][ T1] blocking_notifier_chain_register (kernel/notifier.c:264) > [ 7.746473][ T1] efivars_pstore_init (drivers/firmware/efi/efi-pstore.c:258 drivers/firmware/efi/efi-pstore.c:306) > [ 7.747059][ T1] do_one_initcall (init/main.c:1283) > [ 7.747623][ T1] ? last_attempt_status_show (drivers/firmware/efi/efi-pstore.c:299) > [ 7.748291][ T1] ? local_clock (arch/x86/include/asm/preempt.h:95 kernel/sched/clock.c:319) > [ 7.748949][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) > [ 7.749590][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) > [ 7.750218][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271) > [ 7.750828][ T1] ? local_clock_noinstr (kernel/sched/clock.c:272 kernel/sched/clock.c:309) > [ 7.751477][ T1] ? local_clock (arch/x86/include/asm/preempt.h:95 kernel/sched/clock.c:319) > [ 7.752042][ T1] ? ktime_get (include/linux/seqlock.h:226) > [ 7.752565][ T1] ? kvm_clock_get_cycles (arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) > [ 7.753268][ T1] ? ktime_get (kernel/time/timekeeping.c:295 kernel/time/timekeeping.c:404 kernel/time/timekeeping.c:826) > [ 7.753775][ T1] ? local_clock_noinstr (kernel/sched/clock.c:272 kernel/sched/clock.c:309) > [ 7.754393][ T1] ? clockevents_program_event (kernel/time/clockevents.c:336) > [ 7.755098][ T1] ? tick_program_event (kernel/time/tick-oneshot.c:44) > [ 7.755720][ T1] ? hrtimer_interrupt (kernel/time/hrtimer.c:1916) > [ 7.756331][ T1] ? irqentry_exit (kernel/entry/common.c:?) > [ 7.756993][ T1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052) > [ 7.757704][ T1] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:80) > [ 7.758306][ T1] ? irqentry_exit (kernel/entry/common.c:?) > [ 7.758860][ T1] ? sysvec_call_function_single (arch/x86/kernel/apic/apic.c:1052) > [ 7.759562][ T1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052) > [ 7.760261][ T1] ? handle_exception (arch/x86/entry/entry_32.S:1048) > [ 7.760967][ T1] ? __get_immptr (arch/x86/lib/insn.c:632) > [ 7.761517][ T1] ? parameq (kernel/params.c:81 kernel/params.c:91 kernel/params.c:99) > [ 7.762011][ T1] ? __get_immptr (arch/x86/lib/insn.c:632) > [ 7.762540][ T1] ? next_arg (lib/cmdline.c:273) > [ 7.763050][ T1] ? parameq (kernel/params.c:90 kernel/params.c:99) > [ 7.763551][ T1] ? parse_args (kernel/params.c:153) > [ 7.764127][ T1] do_initcall_level (init/main.c:1344) > [ 7.764819][ T1] do_initcalls (init/main.c:1358) > [ 7.765347][ T1] ? kernel_init (init/main.c:1485) > [ 7.765895][ T1] do_basic_setup (init/main.c:1381) > [ 7.766432][ T1] kernel_init_freeable (init/main.c:1597) > [ 7.767049][ T1] ? rest_init (init/main.c:1475) > [ 7.767587][ T1] ? rest_init (init/main.c:1475) > [ 7.768125][ T1] kernel_init (init/main.c:1485) > [ 7.768686][ T1] ret_from_fork (arch/x86/kernel/process.c:164) > [ 7.769276][ T1] ? __switch_to_asm (arch/x86/entry/entry_32.S:704) > [ 7.769852][ T1] ? __switch_to_asm (arch/x86/entry/entry_32.S:704) > [ 7.770427][ T1] ? __switch_to_asm (arch/x86/entry/entry_32.S:704) > [ 7.771001][ T1] ? rest_init (init/main.c:1475) > [ 7.771535][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) > [ 7.771957][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) > [ 7.772338][ T1] irq event stamp: 108765 > [ 7.772712][ T1] hardirqs last enabled at (108773): __console_unlock (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:109 arch/x86/include/asm/irqflags.h:151 kernel/printk/printk.c:345 kernel/printk/printk.c:2858) > [ 7.773432][ T1] hardirqs last disabled at (108782): __console_unlock (kernel/printk/printk.c:343) > [ 7.774123][ T1] softirqs last enabled at (108714): __do_softirq (kernel/softirq.c:657) > [ 7.774782][ T1] softirqs last disabled at (108699): __do_softirq (kernel/softirq.c:657) > [ 7.775441][ T1] ---[ end trace 0000000000000000 ]--- > > > The kernel config and materials to reproduce are available at: > https://download.01.org/0day-ci/archive/20251210/202512101632.a94de49b-lkp@intel.com > > > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki > ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops 2025-12-10 9:13 ` Ard Biesheuvel @ 2025-12-10 14:28 ` Kees Cook 0 siblings, 0 replies; 3+ messages in thread From: Kees Cook @ 2025-12-10 14:28 UTC (permalink / raw) To: Ard Biesheuvel Cc: Val Packett, oe-lkp, lkp, linux-hardening, Tony Luck, Guilherme G. Piccoli, linux-efi, linux-kernel, oliver.sang On Wed, Dec 10, 2025 at 06:13:17PM +0900, Ard Biesheuvel wrote: > On Wed, 10 Dec 2025 at 17:41, kernel test robot <oliver.sang@intel.com> wrote: > > > > > > > > Hello, > > > > kernel test robot noticed "WARNING:at_kernel/locking/rwsem.c:#__down_write_trylock" on: > > > > commit: 6f473fefec79a8ba24013a5676a93934ee5ac922 ("[PATCH] efi: pstore: Support late setup with TEE-backed efivars ops") > > url: https://github.com/intel-lab-lkp/linux/commits/Val-Packett/efi-pstore-Support-late-setup-with-TEE-backed-efivars-ops/20251203-123406 > > base: https://git.kernel.org/cgit/linux/kernel/git/kees/linux.git for-next/pstore > > patch link: https://lore.kernel.org/all/20251203042850.14210-1-val@packett.cool/ > > patch subject: [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops > > > > in testcase: boot > > > > config: i386-randconfig-015-20251207 > > compiler: clang-20 > > test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G > > > > (please refer to attached dmesg/kmsg for entire log/backtrace) > > > > > > +---------------------------------------------------------+------------+------------+ > > | | b692553573 | 6f473fefec | > > +---------------------------------------------------------+------------+------------+ > > | WARNING:at_kernel/locking/rwsem.c:#__down_write_trylock | 0 | 18 | > > | EIP:__down_write_trylock | 0 | 18 | > > | WARNING:at_kernel/locking/rwsem.c:#up_write | 0 | 18 | > > | EIP:up_write | 0 | 18 | > > +---------------------------------------------------------+------------+------------+ > > > > This seems to be a non-EFI boot, in which case the notifier chain is > never initialized. > > Kees, can you drop this from your branch so we can get it fixed? I > also had some review feedback that hasn't been taken into account yet. I didn't take it -- this appears to be patch-based 0day randconfig. (I'd rather it went via EFI anyway, too.) -Kees -- Kees Cook ^ permalink raw reply [flat|nested] 3+ messages in thread
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2025-12-10 8:40 ` [PATCH] efi: pstore: Support late setup with TEE-backed efivars ops kernel test robot
2025-12-10 9:13 ` Ard Biesheuvel
2025-12-10 14:28 ` Kees Cook
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