divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3048 Comm: kworker/0:2 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker RIP: 0010:calculate_skb_padding drivers/net/wireguard/send.c:151 [inline] RIP: 0010:encrypt_packet+0xdb/0x920 drivers/net/wireguard/send.c:168 Code: fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 72 05 00 00 41 8b 4f 3c 44 89 f0 31 d2 4c 89 ff f1 8d 42 0f 83 e0 f0 39 c1 0f 47 c8 29 d1 41 8d 04 0e 89 8d 08 RSP: 0018:ffffc90008e77840 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff920011cef0d RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888091fa3000 RDI: ffff888092e52480 RBP: ffffc90008e77c50 R08: 0000000000000006 R09: fffffbfff14b7589 R10: fffffbfff14b7588 R11: ffffffff8a5bac47 R12: ffffc90008e77c28 R13: ffff888091fa3000 R14: 0000000000000000 R15: ffff888092e52480 FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd940569b0 CR3: 000000009f35f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wg_packet_encrypt_worker+0x2a0/0xed0 drivers/net/wireguard/send.c:291 process_one_work+0x856/0x1630 kernel/workqueue.c:2264 worker_thread+0x85/0xb60 kernel/workqueue.c:2410 kthread+0x331/0x3f0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 3e071dcef13a6228 ]--- RIP: 0010:calculate_skb_padding drivers/net/wireguard/send.c:151 [inline] RIP: 0010:encrypt_packet+0xdb/0x920 drivers/net/wireguard/send.c:168 Code: fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 72 05 00 00 41 8b 4f 3c 44 89 f0 31 d2 4c 89 ff f1 8d 42 0f 83 e0 f0 39 c1 0f 47 c8 29 d1 41 8d 04 0e 89 8d 08 RSP: 0018:ffffc90008e77840 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff920011cef0d RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888091fa3000 RDI: ffff888092e52480 RBP: ffffc90008e77c50 R08: 0000000000000006 R09: fffffbfff14b7589 R10: fffffbfff14b7588 R11: ffffffff8a5bac47 R12: ffffc90008e77c28 R13: ffff888091fa3000 R14: 0000000000000000 R15: ffff888092e52480 FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000000a94a2000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400