===================================================== BUG: KMSAN: uninit-value in do_user_addr_fault+0x860/0x1f20 arch/x86/mm/fault.c:1341 do_user_addr_fault+0x860/0x1f20 arch/x86/mm/fault.c:1341 handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x61/0x140 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x1e/0x30 Local variable regs created at: __bpf_prog_run32+0x84/0x180 kernel/bpf/core.c:2073 bpf_dispatcher_nop_func include/linux/bpf.h:804 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2022 [inline] bpf_trace_run2+0x129/0x380 kernel/trace/bpf_trace.c:2059 CPU: 1 PID: 4091 Comm: modprobe Not tainted 5.18.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ===================================================== Kernel panic - not syncing: kmsan.panic set ... CPU: 1 PID: 4091 Comm: modprobe Tainted: G B 5.18.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1ff/0x28e lib/dump_stack.c:106 dump_stack+0x25/0x28 lib/dump_stack.c:113 panic+0x4fe/0xc73 kernel/panic.c:250 kmsan_report+0x2cd/0x2d0 mm/kmsan/report.c:208 __msan_warning+0x94/0x110 mm/kmsan/instrumentation.c:256 do_user_addr_fault+0x860/0x1f20 arch/x86/mm/fault.c:1341 handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x61/0x140 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x1e/0x30 RIP: 0033:0x7f2b14d3e4e7 Code: fb 02 00 48 83 c0 10 48 89 05 5d fb 02 00 48 89 05 4e fb 02 00 48 8d 05 e7 11 01 00 48 89 05 c8 fa 02 00 48 8b 05 e9 fc 02 00 <89> b5 70 fd ff ff 8b 35 f5 e8 02 00 48 89 85 c0 fd ff ff 48 8d 05 RSP: 002b:00007ffd722b0f90 EFLAGS: 00010202 RAX: 00007ffd722b1380 RBX: 00007f2b14d61018 RCX: 0000000000000000 RDX: 00007ffd722b1298 RSI: 000000000000000d RDI: 000055d5f2d9d040 RBP: 00007ffd722b1250 R08: 0000000000000003 R09: 0000000000000800 R10: ffffffffffffffff R11: 0000000000000008 R12: 000000000000000d R13: 4f4c5f4543415254 R14: 00007ffd722b13a0 R15: 00007ffd722b1010 Kernel Offset: disabled Rebooting in 86400 seconds..