[my two cents] I do see similar kernel panic while running ftrace testing on today's Linux next-20230906 tag. This crash is from qemu-arm64. Here I am providing steps to reproduced link and scripts by using tuxrun tool. - https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/2V0OqxEZUXIPNqWhQnnsuFOGYxR/reproducer Script details, ============= # To install tuxrun to your home directory at ~/.local/bin: # pip3 install -U --user tuxrun==0.49.0 # # Or install a deb/rpm depending on the running distribution # See https://tuxmake.org/install-deb/ or # https://tuxmake.org/install-rpm/ # # See https://tuxrun.org/ for complete documentation. # # tuxrun --runtime podman --device qemu-arm64 --boot-args rw --kernel https://storage.tuxsuite.com/public/linaro/lkft/builds/2V0OpMYBZhVvxapElfcyFHdaNlO/Image.gz --modules https://storage.tuxsuite.com/public/linaro/lkft/builds/2V0OpMYBZhVvxapElfcyFHdaNlO/modules.tar.xz --rootfs https://storage.tuxboot.com/debian/bookworm/arm64/rootfs.ext4.xz --parameters SKIPFILE=skipfile-lkft.yaml --parameters KSELFTEST=https://storage.tuxsuite.com/public/linaro/lkft/builds/2V0OpMYBZhVvxapElfcyFHdaNlO/kselftest.tar.xz --image docker.io/linaro/tuxrun-dispatcher:v0.49.0 --tests kselftest-ftrace --timeouts boot=30 kselftest-ftrace=40 Log details, ------------- # ok 45 ftrace - test tracing error log support <47>[ 1373.662292] systemd-journald[90]: Sent WATCHDOG=1 notification. # ok 46 Test creation and deletion of trace instances while setting an event <1>[ 1382.873224] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030 <1>[ 1382.873223] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030 <1>[ 1382.873426] Mem abort info: <1>[ 1382.874414] Mem abort info: <1>[ 1382.874449] ESR = 0x0000000097820004 <1>[ 1382.876291] ESR = 0x0000000097820004 <1>[ 1382.876385] EC = 0x25: DABT (current EL), IL = 32 bits <1>[ 1382.877319] SET = 0, FnV = 0 <1>[ 1382.877370] EA = 0, S1PTW = 0 <1>[ 1382.878795] EC = 0x25: DABT (current EL), IL = 32 bits <1>[ 1382.879182] SET = 0, FnV = 0 <1>[ 1382.879447] EA = 0, S1PTW = 0 <1>[ 1382.879729] FSC = 0x04: level 0 translation fault <1>[ 1382.879967] Data abort info: <1>[ 1382.880240] Access size = 4 byte(s) <1>[ 1382.880562] SSE = 0, SRT = 2 <1>[ 1382.880849] SF = 0, AR = 0 <1>[ 1382.881071] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 <1>[ 1382.881442] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 <1>[ 1382.881934] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000109bd6000 <1>[ 1382.882268] [0000000000000030] pgd=0000000000000000, p4d=0000000000000000 <0>[ 1382.883777] Internal error: Oops: 0000000097820004 [#1] PREEMPT SMP <4>[ 1382.884325] Modules linked in: crct10dif_ce sm3_ce sm3 sha3_ce sha512_ce sha512_arm64 fuse drm backlight dm_mod ip_tables x_tables [last unloaded: trace_printk] <4>[ 1382.886127] CPU: 1 PID: 3241 Comm: ls Not tainted 6.5.0-next-20230906 #1 <1>[ 1382.886539] FSC = 0x04: level 0 translation fault <1>[ 1382.891731] Data abort info: <1>[ 1382.891995] Access size = 4 byte(s) <1>[ 1382.892315] SSE = 0, SRT = 2 <1>[ 1382.892603] SF = 0, AR = 0 <1>[ 1382.892878] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 <1>[ 1382.893291] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 <1>[ 1382.893719] user pgtable: 4k pages, 48-bit VAs, pgdp=000000010962a000 <1>[ 1382.894229] [0000000000000030] pgd=0000000000000000, p4d=0000000000000000 <4>[ 1382.897391] Hardware name: linux,dummy-virt (DT) <4>[ 1382.898217] pstate: 824000c9 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) <4>[ 1382.899653] pc : trace_event_buffer_reserve+0x78/0xc0 <4>[ 1382.900902] lr : trace_event_buffer_reserve+0x60/0xc0 <4>[ 1382.902127] sp : ffff800080e43ac0 <4>[ 1382.903181] x29: ffff800080e43ac0 x28: ffff0000c5833348 x27: 0000000000000001 <4>[ 1382.904708] x26: 0000000000000000 x25: 0000000000000000 x24: ffff0000c5832dc0 <4>[ 1382.906141] x23: ffff0000c5834c40 x22: 0000000000000000 x21: 0000000000000040 <4>[ 1382.907736] x20: ffff0000c8ff6a20 x19: ffff800080e43b38 x18: 0000000000000000 <4>[ 1382.909777] x17: ffff5068c5eb0000 x16: ffff800080008000 x15: 00001e8480000000 <4>[ 1382.910696] x14: 000000000003d090 x13: 0000000000000000 x12: 000010a6a8ef4568 <4>[ 1382.912214] x11: 0042c616304c5adc x10: 000000000000b67e x9 : ffffaf98378ee6f8 <4>[ 1382.913698] x8 : 01fd405aa4bf7a00 x7 : 0000000000000009 x6 : 0000000000000081 <4>[ 1382.915755] x5 : 000000000000000f x4 : 0000000000010002 x3 : 0000000000000040 <4>[ 1382.916645] x2 : 0000000000000003 x1 : ffff0000c8ff6a20 x0 : ffff800080e43b38 <4>[ 1382.918912] Call trace: <4>[ 1382.919358] trace_event_buffer_reserve+0x78/0xc0 <4>[ 1382.920703] trace_event_raw_event_sched_switch+0x68/0x158 <4>[ 1382.922509] __schedule+0x5ac/0xb38 <4>[ 1382.923027] preempt_schedule_irq+0x44/0xa8 <4>[ 1382.924169] el1_interrupt+0x4c/0x68 <4>[ 1382.925259] el1h_64_irq_handler+0x18/0x28 <4>[ 1382.926943] el1h_64_irq+0x64/0x68 <4>[ 1382.927415] iterate_dir+0x0/0x198 <4>[ 1382.928505] invoke_syscall+0x50/0x120 <4>[ 1382.930141] el0_svc_common.constprop.0+0x48/0xf0 <4>[ 1382.930761] do_el0_svc+0x24/0x38 <4>[ 1382.931907] el0_svc+0x48/0xf8 <4>[ 1382.932906] el0t_64_sync_handler+0x120/0x130 <4>[ 1382.934044] el0t_64_sync+0x190/0x198 <0>[ 1382.936061] Code: b9002264 aa1503e3 aa1403e1 aa1303e0 (b94032c2) <4>[ 1382.937767] ---[ end trace 0000000000000000 ]--- <0>[ 1382.939168] Internal error: Oops: 0000000097820004 [#2] PREEMPT SMP <6>[ 1382.939221] note: ls[3241] exited with irqs disabled <4>[ 1382.939699] Modules linked in: crct10dif_ce sm3_ce sm3 sha3_ce sha512_ce sha512_arm64 fuse drm backlight dm_mod ip_tables x_tables [last unloaded: trace_printk] <4>[ 1382.940174] CPU: 0 PID: 3233 Comm: mkdir Tainted: G D 6.5.0-next-20230906 #1 <4>[ 1382.940237] Hardware name: linux,dummy-virt (DT) <4>[ 1382.940267] pstate: 824000c9 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) <4>[ 1382.940310] pc : trace_event_buffer_reserve+0x78/0xc0 <4>[ 1382.944728] lr : trace_event_buffer_reserve+0x60/0xc0 <4>[ 1382.945364] sp : ffff800080ddb800 <4>[ 1382.946351] x29: ffff800080ddb800 x28: ffff0000c2444288 x27: 0000000000000001 <4>[ 1382.947882] x26: 0000000000000000 x25: ffffaf9838b57e00 x24: ffff0000c2443d00 <4>[ 1382.949375] x23: ffff0000c02ceac0 x22: 0000000000000000 x21: 0000000000000040 <4>[ 1382.951442] x20: ffff0000c8ff6a20 x19: ffff800080ddb878 x18: ffff800080e3bc48 <4>[ 1382.952347] x17: ffff5068c5e91000 x16: ffff800080000000 x15: 000000000000000c <4>[ 1382.954391] x14: 0000000000000001 x13: 006b7361745f6465 x12: 00000e73fb208dc2 <4>[ 1382.955303] x11: 0039fa6a50d119f8 x10: 000000000000b67e x9 : ffffaf98378ee6f8 <4>[ 1382.956810] x8 : ffff0000ff7b1400 x7 : 0000000000000009 x6 : 0000000000000081 <4>[ 1382.958316] x5 : 000000000000000f x4 : 0000000000010002 x3 : 0000000000000040 <4>[ 1382.959846] x2 : 0000000000000003 x1 : ffff0000c8ff6a20 x0 : ffff800080ddb878 <4>[ 1382.961396] Call trace: <4>[ 1382.962391] trace_event_buffer_reserve+0x78/0xc0 <4>[ 1382.963637] trace_event_raw_event_sched_switch+0x68/0x158 <4>[ 1382.964913] __schedule+0x5ac/0xb38 <4>[ 1382.966018] preempt_schedule_irq+0x44/0xa8 <4>[ 1382.967055] el1_interrupt+0x4c/0x68 <4>[ 1382.967816] el1h_64_irq_handler+0x18/0x28 <4>[ 1382.968607] el1h_64_irq+0x64/0x68 <4>[ 1382.969353] __kmalloc_node_track_caller+0x0/0x1b8 <4>[ 1382.970204] eventfs_prepare_ef.constprop.0+0x5c/0xf0 <4>[ 1382.971094] eventfs_add_file+0x38/0xb0 <4>[ 1382.971872] event_create_dir+0x120/0x4b0 <4>[ 1382.972751] event_trace_add_tracer+0xac/0x120 <4>[ 1382.973564] trace_array_create_dir+0x3c/0xc8 <4>[ 1382.974382] trace_array_create+0x11c/0x1e8 <4>[ 1382.975221] instance_mkdir+0x78/0xb8 <4>[ 1382.975987] tracefs_syscall_mkdir+0x50/0x90 <4>[ 1382.976798] vfs_mkdir+0x198/0x230 <4>[ 1382.977549] do_mkdirat+0x9c/0x168 <4>[ 1382.978289] __arm64_sys_mkdirat+0x58/0x90 <4>[ 1382.979106] invoke_syscall+0x50/0x120 <4>[ 1382.979893] el0_svc_common.constprop.0+0x48/0xf0 <4>[ 1382.980735] do_el0_svc+0x24/0x38 <4>[ 1382.981475] el0_svc+0x48/0xf8 <4>[ 1382.982194] el0t_64_sync_handler+0x120/0x130 <4>[ 1382.983021] el0t_64_sync+0x190/0x198 <0>[ 1382.983830] Code: b9002264 aa1503e3 aa1403e1 aa1303e0 (b94032c2) <4>[ 1382.984710] ---[ end trace 0000000000000000 ]--- <6>[ 1382.985490] note: mkdir[3233] exited with irqs disabled Links: - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230906/testrun/19720390/suite/log-parser-test/test/check-kernel-oops/log - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230906/testrun/19720390/suite/log-parser-test/test/check-kernel-oops-4c803c9937c892dbabb910d9e3c7b9e9ac9cf45dd3a5af9b07caf0f1291e772b/details/ - https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/2V0OqxEZUXIPNqWhQnnsuFOGYxR -- Linaro LKFT https://lkft.linaro.org
