------------[ cut here ]------------ taprio: dequeue() called with unknown picos per byte. WARNING: CPU: 1 PID: 5255 at net/sched/sch_taprio.c:137 taprio_dequeue+0x7a9/0x9a0 net/sched/sch_taprio.c:137 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 5255 Comm: systemd-udevd Not tainted 5.1.0-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+0x86/0xca lib/dump_stack.c:113 panic+0x1e7/0x3ac kernel/panic.c:214 __warn.cold.7+0x1b/0x37 kernel/panic.c:571 report_bug+0x1a1/0x200 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x1c0 arch/x86/kernel/traps.c:272 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:taprio_dequeue+0x7a9/0x9a0 net/sched/sch_taprio.c:137 Code: e8 bc 43 00 fb e9 40 f9 ff ff 80 3d 8e f9 35 04 00 0f 85 28 ff ff ff 48 c7 c7 c0 38 bf 88 c6 05 7a f9 35 04 01 e8 9a 8f ec fa <0f> 0b 31 c0 e9 0e ff ff ff 48 89 45 98 e8 55 c1 45 fb ba ff ff 37 RSP: 0018:ffff8880ba307dc8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff888237a87a80 RCX: 1ffff1101457d443 RDX: 0000000000000000 RSI: ffff8880a2bea1f8 RDI: ffff8880a2bea1cc RBP: ffff8880ba307e38 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888098d9c200 R13: ffff888237a87d60 R14: ffff88809a615500 R15: ffff888237a87a80 dequeue_skb net/sched/sch_generic.c:261 [inline] qdisc_restart net/sched/sch_generic.c:364 [inline] __qdisc_run+0x163/0x1590 net/sched/sch_generic.c:382 qdisc_run include/net/pkt_sched.h:121 [inline] net_tx_action+0x35a/0x8c0 net/core/dev.c:4636 __do_softirq+0x21e/0x8be kernel/softirq.c:293 invoke_softirq kernel/softirq.c:374 [inline] irq_exit+0x149/0x180 kernel/softirq.c:414 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13e/0x540 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:__kernel_text_address+0x4/0x40 kernel/extable.c:106 Code: 01 00 00 00 c3 48 89 df e8 f9 bc 2b 00 0f b6 c0 eb db e8 ff 86 52 00 e9 6d ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 <53> 48 89 fb e8 03 ff ff ff 85 c0 75 18 48 81 fb 00 00 9c 8a 72 0c RSP: 0018:ffff8880a065f938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8880a065f968 RCX: 0000000000000000 RDX: 1ffff110140cbf36 RSI: ffff8880a065fdf8 RDI: ffffffff8199b135 RBP: ffff8880a065f938 R08: 1ffff110140cbf37 R09: ffff8880a065f9a0 R10: ffff8880a065f918 R11: ffff8880a065f9c7 R12: ffff8880a065f9b0 R13: 0000000000000000 R14: ffff8880a2be9900 R15: ffff8880af54b1ff unwind_get_return_address arch/x86/kernel/unwind_frame.c:18 [inline] unwind_get_return_address+0x58/0xa0 arch/x86/kernel/unwind_frame.c:13 __save_stack_trace+0x9c/0x100 arch/x86/kernel/stacktrace.c:45 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60 save_stack mm/kasan/common.c:75 [inline] set_track mm/kasan/common.c:87 [inline] __kasan_kmalloc.part.0+0x66/0x100 mm/kasan/common.c:497 __kasan_kmalloc.constprop.1+0xb1/0xc0 mm/kasan/common.c:478 kasan_slab_alloc+0x11/0x20 mm/kasan/common.c:505 slab_post_alloc_hook mm/slab.h:437 [inline] slab_alloc_node mm/slub.c:2756 [inline] slab_alloc mm/slub.c:2764 [inline] kmem_cache_alloc+0xd6/0x2c0 mm/slub.c:2769 getname_flags+0xb8/0x510 fs/namei.c:138 user_path_at_empty+0x1e/0x40 fs/namei.c:2606 user_path_at include/linux/namei.h:60 [inline] vfs_statx+0xbe/0x150 fs/stat.c:187 vfs_lstat include/linux/fs.h:3186 [inline] __do_sys_newlstat fs/stat.c:354 [inline] __se_sys_newlstat+0x85/0xe0 fs/stat.c:348 __x64_sys_newlstat+0x4f/0x70 fs/stat.c:348 do_syscall_64+0xa3/0x440 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa6bd2b5335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007ffc301e4b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 000055fda37bf650 RCX: 00007fa6bd2b5335 RDX: 00007ffc301e4bd0 RSI: 00007ffc301e4bd0 RDI: 000055fda37be650 RBP: 00007ffc301e4c90 R08: 00007fa6bd5741b8 R09: 0000000000001010 R10: 00007fa6bd573b58 R11: 0000000000000246 R12: 000055fda37be650 R13: 000055fda37be664 R14: 000055fda37c110d R15: 000055fda37c1114 Kernel Offset: disabled Rebooting in 86400 seconds..