------------[ cut here ]------------ verifier bug: REG INVARIANTS VIOLATION (false_reg1): range bounds violation u64=[0x4000000, 0x0] s64=[0x4000000, 0x0] u32=[0x4000000, 0x0] s32=[0x4000000, 0x0] var_off=(0x0, 0x0) WARNING: kernel/bpf/verifier.c:2742 at reg_bounds_sanity_check+0x558/0x1804 kernel/bpf/verifier.c:2742, CPU#1: syz.4.2343/10901 Modules linked in: CPU: 1 UID: 0 PID: 10901 Comm: syz.4.2343 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+0x558/0x1804 kernel/bpf/verifier.c:2742 lr : reg_bounds_sanity_check+0x558/0x1804 kernel/bpf/verifier.c:2742 sp : ffff80008e3f6fa0 x29: ffff80008e3f6fd0 x28: 1fffe00004870a5e x27: 1fffe00004870a5e x26: 0000000000000000 x25: 0000000004000000 x24: ffff8000856f7ac0 x23: 0000000000000004 x22: 0000000000000004 x21: ffff8000856f7960 x20: ffff000025f78000 x19: ffff0000243852a0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff00006a050504 x15: 0000000000001574 x14: 0000000000001570 x13: 0000000000000000 x12: ffff6000029d22a1 x11: 1fffe000029d22a0 x10: ffff6000029d22a0 x9 : dfff800000000000 x8 : ffff000014e91503 x7 : 0000000000000001 x6 : ffff6000029d22a0 x5 : ffff000014e91500 x4 : ffff6000029d22a1 x3 : 1fffe0000d40bd35 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000012f60000 Call trace: reg_bounds_sanity_check+0x558/0x1804 kernel/bpf/verifier.c:2742 (P) reg_set_min_max kernel/bpf/verifier.c:16572 [inline] reg_set_min_max+0x174/0x210 kernel/bpf/verifier.c:16537 check_cond_jmp_op+0xba8/0x5978 kernel/bpf/verifier.c:17016 do_check_insn kernel/bpf/verifier.c:20441 [inline] do_check kernel/bpf/verifier.c:20581 [inline] do_check_common+0x8244/0x9578 kernel/bpf/verifier.c:23865 do_check_main kernel/bpf/verifier.c:23948 [inline] bpf_check+0x5a94/0x8918 kernel/bpf/verifier.c:25255 bpf_prog_load+0x1010/0x1f24 kernel/bpf/syscall.c:3088 __sys_bpf+0x808/0x2988 kernel/bpf/syscall.c:6164 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline] __se_sys_bpf kernel/bpf/syscall.c:6272 [inline] __arm64_sys_bpf+0x70/0xa4 kernel/bpf/syscall.c:6272 __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+0x54/0x2b0 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 482 hardirqs last enabled at (481): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1570 [inline] hardirqs last enabled at (481): [] finish_lock_switch kernel/sched/core.c:4995 [inline] hardirqs last enabled at (481): [] finish_task_switch.isra.0+0x1a8/0x85c kernel/sched/core.c:5112 hardirqs last disabled at (482): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (464): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (464): [] handle_softirqs+0x88c/0xdb4 kernel/softirq.c:650 softirqs last disabled at (455): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---