[sorry for the adding you in CC] While running LTP controllers test suite on this patch set applied on top of the next-20230406 and the following kernel panic noticed on qemu-i386. crash log: --------- pids 1 TINFO: timeout per run is 0h 25m 0s pids 1 TINFO: test starts with cgroup version 1 pids 1 TINFO: Running testcase 6 with 10 processes pids 1 TINFO: set a limit that is smaller than current number of pids <6>[ 782.211806] cgroup: fork rejected by pids controller in /ltp/test-2724 pids 1 TPASS: fork failed as expected /opt/ltp/testcases/bin/tst_test.sh: line 150: 2760 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2761 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2762 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2763 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2764 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2765 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2766 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2767 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2768 Killed pids_task2 /opt/ltp/testcases/bin/tst_test.sh: line 150: 2769 Killed pids_task2 <4>[ 782.594441] int3: 0000 [#1] PREEMPT SMP <4>[ 782.594783] CPU: 1 PID: 2724 Comm: pids.sh Not tainted 6.3.0-rc5-next-20230406 #1 <4>[ 782.594915] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 <4>[ 782.595168] EIP: get_page_from_freelist+0x157/0xccc <4>[ 782.595745] Code: 48 04 8d 43 08 85 c9 0f 85 fe 07 00 00 3b 73 0c 0f 82 f5 07 00 00 89 45 c8 8b 45 c8 8b 00 89 45 e0 85 c0 0f 84 fc 07 00 00 3e <8d> 74 26 00 8b 45 cc 80 78 14 00 0f 84 90 05 00 00 8b 45 e0 8b 58 <4>[ 782.595850] EAX: 00000000 EBX: c7ab5ce4 ECX: 00000800 EDX: 00000000 <4>[ 782.595889] ESI: 00400dc0 EDI: 00000000 EBP: c7ab5c78 ESP: c7ab5c04 <4>[ 782.595928] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 EFLAGS: 00000297 <4>[ 782.596017] CR0: 80050033 CR2: 086d1d54 CR3: 06eaa000 CR4: 000006d0 <4>[ 782.596188] Call Trace: <4>[ 782.596503] ? exc_int3+0x10/0x130 <4>[ 782.596630] ? __irq_exit_rcu+0x15/0xcc <4>[ 782.596655] ? sysvec_call_function+0x3c/0x3c <4>[ 782.596677] ? __irq_exit_rcu+0x15/0xcc <4>[ 782.596694] ? irqentry_exit+0x26/0x58 <4>[ 782.596733] __alloc_pages+0x156/0xf50 <4>[ 782.596783] ? handle_exception+0x133/0x133 <4>[ 782.596817] ? __rcu_read_unlock+0x1e/0x30 <4>[ 782.596843] ? sysvec_call_function+0x3c/0x3c <4>[ 782.596880] ? __irq_exit_rcu+0x15/0xcc <4>[ 782.596903] pte_alloc_one+0x23/0x88 <4>[ 782.596928] __pte_alloc+0x21/0xb0 <4>[ 782.596981] ? trace_hardirqs_on+0x2c/0x88 <4>[ 782.597002] copy_page_range+0x67d/0xb40 <4>[ 782.597049] ? mas_wr_modify+0x10e/0x364 <4>[ 782.597069] ? mod_objcg_state+0x99/0x378 <4>[ 782.597103] ? mas_wr_store_entry.isra.0+0x10c/0x534 <4>[ 782.597127] ? mas_store+0x45/0xb0 <4>[ 782.597160] copy_process+0x1de6/0x1f9c <4>[ 782.597179] ? lockref_get_not_dead+0x2c/0x38 <4>[ 782.597246] kernel_clone+0xc1/0x3dc <4>[ 782.597279] __ia32_sys_clone+0x71/0x8c <4>[ 782.597320] __do_fast_syscall_32+0x4c/0xb8 <4>[ 782.597340] do_fast_syscall_32+0x32/0x74 <4>[ 782.597361] do_SYSENTER_32+0x15/0x24 <4>[ 782.597381] entry_SYSENTER_32+0x98/0xf1 <4>[ 782.597484] EIP: 0xb7f3e579 <4>[ 782.597838] Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d 76 00 58 b8 77 00 00 00 cd 80 90 8d 76 <4>[ 782.597856] EAX: ffffffda EBX: 01200011 ECX: 00000000 EDX: 00000000 <4>[ 782.597876] ESI: 00000000 EDI: b7f398e8 EBP: b7f01e3c ESP: bfa4599c <4>[ 782.597889] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000286 <4>[ 782.598167] Modules linked in: <4>[ 782.616852] ---[ end trace 0000000000000000 ] --- <4>[ 782.616998] EIP: get_page_from_freelist+0x157/0xccc <4>[ 782.617213] Code: 48 04 8d 43 08 85 c9 0f 85 fe 07 00 00 3b 73 0c 0f 82 f5 07 00 00 89 45 c8 8b 45 c8 8b 00 89 45 e0 85 c0 0f 84 fc 07 00 00 3e <8d> 74 26 00 8b 45 cc 80 78 14 00 0f 84 90 05 00 00 8b 45 e0 8b 58 <4>[ 782.617234] EAX: 00000000 EBX: c7ab5ce4 ECX: 00000800 EDX: 00000000 <4>[ 782.617247] ESI: 00400dc0 EDI: 00000000 EBP: c7ab5c78 ESP: c7ab5c04 <4>[ 782.617260] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 EFLAGS: 00000297 <4>[ 782.617276] CR0: 80050033 CR2: 086d1d54 CR3: 06eaa000 CR4: 000006d0 <0>[ 782.617472] Kernel panic - not syncing: Fatal exception in interrupt <0>[ 782.619115] Kernel Offset: disabled Crash log details, https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/lore_kernel_org_linux-block_20230404140835_25166-1-sergei_shtepa_veeam_com/testrun/16171777/suite/log-parser-test/test/check-kernel-panic/details/ https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/lore_kernel_org_linux-block_20230404140835_25166-1-sergei_shtepa_veeam_com/testrun/16171777/suite/log-parser-test/test/check-kernel-panic/log Build artifacts links, https://storage.tuxsuite.com/public/linaro/anders/builds/2OGpRflnb14kT3aJdPte4NdjKoT/ vmlinux: https://storage.tuxsuite.com/public/linaro/anders/builds/2OGpRflnb14kT3aJdPte4NdjKoT/vmlinux.xz System.map: https://storage.tuxsuite.com/public/linaro/anders/builds/2OGpRflnb14kT3aJdPte4NdjKoT/System.map steps to reproduce: # To install tuxrun on your system globally: # sudo pip3 install -U tuxrun==0.41.0 # # See https://tuxrun.org/ for complete documentation. tuxrun \ --runtime podman \ --device qemu-i386 \ --kernel https://storage.tuxsuite.com/public/linaro/anders/builds/2OGpRflnb14kT3aJdPte4NdjKoT/bzImage \ --modules https://storage.tuxsuite.com/public/linaro/anders/builds/2OGpRflnb14kT3aJdPte4NdjKoT/modules.tar.xz \ --rootfs https://storage.tuxsuite.com/public/linaro/lkft/oebuilds/2OFRZUbhWDZYvEcYrKKj1AJ618K/images/intel-core2-32/lkft-tux-image-intel-core2-32-20230410193126.rootfs.ext4.gz \ --parameters SKIPFILE=skipfile-lkft.yaml \ --parameters SHARD_NUMBER=10 \ --parameters SHARD_INDEX=10 \ --image docker.io/lavasoftware/lava-dispatcher:2023.01.0020.gc1598238f \ --tests ltp-controllers \ --timeouts boot=15 ltp-controllers=80 -- Linaro LKFT https://lkft.linaro.org
