------------[ cut here ]------------ verifier bug: REG INVARIANTS VIOLATION (true_reg1): range bounds violation u64=[0x1f, 0x1f] s64=[0x1f, 0x1f] u32=[0x1f, 0x17] s32=[0x1f, 0x1f] var_off=(0x1f, 0x0)(1) WARNING: CPU: 1 PID: 3749 at kernel/bpf/verifier.c:2722 reg_bounds_sanity_check+0x550/0x176c kernel/bpf/verifier.c:2722 Modules linked in: CPU: 1 UID: 0 PID: 3749 Comm: syz.0.87 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : reg_bounds_sanity_check+0x550/0x176c kernel/bpf/verifier.c:2722 lr : reg_bounds_sanity_check+0x550/0x176c kernel/bpf/verifier.c:2722 sp : ffff8000a2456fe0 x29: ffff8000a2457010 x28: 1fffe00003206e36 x27: 1fffe00003206e37 x26: 1fffe00003206e37 x25: 000000000000001f x24: 000000000000001f x23: ffff800085567fa0 x22: 0000000000000004 x21: 0000000000000004 x20: ffff00000e8f8000 x19: ffff000019037168 x18: 0000000000000017 x17: 0000000000006328 x16: 00000000f1f1f1f1 x15: 0000000000000001 x14: 0000000000000001 x13: 0000000000008000 x12: ffff70001448ad9f x11: 1ffff0001448ad9e x10: ffff70001448ad9e x9 : dfff800000000000 x8 : ffff8000a2456cf7 x7 : 0000000000000001 x6 : ffff70001448ad9e x5 : 1ffff00010e21c42 x4 : 1fffe00002afc3c9 x3 : dfff800000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000157e1e40 Call trace: reg_bounds_sanity_check+0x550/0x176c kernel/bpf/verifier.c:2722 (P) reg_set_min_max kernel/bpf/verifier.c:16334 [inline] reg_set_min_max+0x14c/0x210 kernel/bpf/verifier.c:16308 check_cond_jmp_op+0x1118/0x5704 kernel/bpf/verifier.c:16768 do_check_insn kernel/bpf/verifier.c:19956 [inline] do_check kernel/bpf/verifier.c:20093 [inline] do_check_common+0x8040/0x9338 kernel/bpf/verifier.c:23260 do_check_main kernel/bpf/verifier.c:23343 [inline] bpf_check+0x5f30/0x9508 kernel/bpf/verifier.c:24703 bpf_prog_load+0xe2c/0x1b74 kernel/bpf/syscall.c:2979 __sys_bpf+0x9c4/0x29c8 kernel/bpf/syscall.c:6029 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline] __se_sys_bpf kernel/bpf/syscall.c:6137 [inline] __arm64_sys_bpf+0x70/0xa4 kernel/bpf/syscall.c:6137 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x50/0x1a0 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 2416 hardirqs last enabled at (2415): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:86 [inline] hardirqs last enabled at (2415): [] exit_to_kernel_mode+0x38/0x118 arch/arm64/kernel/entry-common.c:96 hardirqs last disabled at (2416): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (1702): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (1702): [] handle_softirqs+0x88c/0xdb4 kernel/softirq.c:607 softirqs last disabled at (1693): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---