sd 0:0:1:0: [sg0] tag#5175 CDB[a0]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
sd 0:0:1:0: [sg0] tag#5175 CDB[b0]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
sd 0:0:1:0: [sg0] tag#5175 CDB[c0]: 00 00 00 00 00 00 00 00
=====================================================
BUG: KMSAN: uninit-value in update_stack_state+0x1ee/0xb40 arch/x86/kernel/unwind_frame.c:202
CPU: 0 PID: 17558 Comm: kworker/0:16 Not tainted 5.8.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x21c/0x280 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
 update_stack_state+0x1ee/0xb40 arch/x86/kernel/unwind_frame.c:202
 unwind_next_frame+0x8c6/0xed0 arch/x86/kernel/unwind_frame.c:305
 arch_stack_walk+0x338/0x3d0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:123
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116
 pskb_expand_head+0x3fd/0x1e30 net/core/skbuff.c:1636
 __skb_pad+0x641/0x9d0 net/core/skbuff.c:1804
 __skb_put_padto include/linux/skbuff.h:3218 [inline]
 skb_put_padto include/linux/skbuff.h:3237 [inline]
 send_hsr_supervision_frame+0x129c/0x15b0 net/hsr/hsr_device.c:299
 hsr_announce+0x21f/0x3c0 net/hsr/hsr_device.c:330
 call_timer_fn+0x226/0x550 kernel/time/timer.c:1404
 expire_timers+0x4fc/0x780 kernel/time/timer.c:1449
 __run_timers+0xaf4/0xd30 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x2ea/0x7f5 kernel/softirq.c:293
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:23 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline]
 do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:390 [inline]
 __irq_exit_rcu+0x226/0x270 kernel/softirq.c:420
 irq_exit_rcu+0xe/0x10 kernel/softirq.c:432
 sysvec_call_function_single+0x107/0x130 arch/x86/kernel/smp.c:243
 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:601
RIP: 0010:kmsan_get_shadow_origin_ptr+0x22/0xb0 mm/kmsan/kmsan_shadow.c:145
Code: 31 c0 e8 3a c8 2f ff cc 55 48 89 e5 41 57 41 56 53 41 89 d7 48 89 f1 49 89 fe 48 81 fe 01 10 00 00 73 6b 80 3d fe 4b c8 10 00 <74> 0b 65 8b 05 c5 14 cc 7d 85 c0 74 22 48 c7 c0 00 40 ff 92 48 c7
RSP: 0018:ffff888048f1bb80 EFLAGS: 00000202
RAX: ffffffff87fd2a61 RBX: ffff88808bae8601 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffff93946040
RBP: ffff888048f1bb98 R08: ffffea0000000001 R09: ffff88812fffa000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff93946040 R15: 0000000000000001
 __msan_metadata_ptr_for_store_1+0x13/0x20 mm/kmsan/kmsan_instr.c:52
 queued_spin_unlock include/asm-generic/qspinlock.h:94 [inline]
 do_raw_spin_unlock include/linux/spinlock.h:211 [inline]
 __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline]
 spin_unlock include/linux/spinlock.h:393 [inline]
 wg_ratelimiter_gc_entries+0x941/0xfb0 drivers/net/wireguard/ratelimiter.c:76
 process_one_work+0x1688/0x2140 kernel/workqueue.c:2269
 worker_thread+0x10bc/0x2730 kernel/workqueue.c:2415
 kthread+0x551/0x590 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

Local variable ----sg.i@wg_packet_decrypt_worker created at:
 decrypt_packet drivers/net/wireguard/receive.c:251 [inline]
 wg_packet_decrypt_worker+0x43c/0x17f0 drivers/net/wireguard/receive.c:509
 decrypt_packet drivers/net/wireguard/receive.c:251 [inline]
 wg_packet_decrypt_worker+0x43c/0x17f0 drivers/net/wireguard/receive.c:509
=====================================================