===================================================== BUG: KMSAN: uninit-value in ___bpf_prog_run+0x9194/0x97a0 kernel/bpf/core.c:1587 CPU: 1 PID: 12195 Comm: syz-executor.0 Not tainted 5.7.0-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:77 [inline] dump_stack+0x1c9/0x220 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 ___bpf_prog_run+0x9194/0x97a0 kernel/bpf/core.c:1587 __bpf_prog_run32+0x101/0x170 kernel/bpf/core.c:1681 bpf_dispatcher_nop_func include/linux/bpf.h:545 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:599 [inline] seccomp_run_filters kernel/seccomp.c:272 [inline] __seccomp_filter+0x59e/0x26f0 kernel/seccomp.c:817 __secure_computing+0x1fa/0x380 kernel/seccomp.c:950 syscall_trace_enter+0x6eb/0xf60 arch/x86/entry/common.c:119 do_syscall_64+0x57/0x160 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45f86a Code: 25 18 00 00 00 00 74 01 f0 48 0f b1 3d ff a5 84 00 48 39 c2 75 da f3 c3 0f 1f 84 00 00 00 00 00 48 63 ff b8 e4 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 c7 c2 d4 ff ff ff f7 RSP: 002b:00007f113d24ac58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e4 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045f86a RDX: 0000000000024928 RSI: 00007f113d24ac60 RDI: 0000000000000001 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000231c0 R14: 00000000004d5818 R15: 00007f113d24b6d4 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310 __msan_chain_origin+0x50/0x90 mm/kmsan/kmsan_instr.c:165 ___bpf_prog_run+0x6c64/0x97a0 kernel/bpf/core.c:1391 __bpf_prog_run32+0x101/0x170 kernel/bpf/core.c:1681 bpf_dispatcher_nop_func include/linux/bpf.h:545 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:599 [inline] seccomp_run_filters kernel/seccomp.c:272 [inline] __seccomp_filter+0x59e/0x26f0 kernel/seccomp.c:817 __secure_computing+0x1fa/0x380 kernel/seccomp.c:950 syscall_trace_enter+0x6eb/0xf60 arch/x86/entry/common.c:119 do_syscall_64+0x57/0x160 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Local variable ----regs@__bpf_prog_run32 created at: __bpf_prog_run32+0x87/0x170 kernel/bpf/core.c:1681 __bpf_prog_run32+0x87/0x170 kernel/bpf/core.c:1681 =====================================================