Oops: divide error: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:mac80211_hwsim_write_tsf+0x3a3/0x590 drivers/net/wireless/virtual/mac80211_hwsim_main.c:1628 Code: 81 c4 e8 49 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 1b bb 22 fb 48 8b 34 24 41 03 34 24 66 b8 20 03 31 d2 <66> f7 f5 0f b7 d8 4d 8d 65 0a 49 83 c5 0d 4c 89 e0 48 c1 e8 03 42 RSP: 0018:ffffc900037aedf0 EFLAGS: 00010246 RAX: 1ffff110080a0320 RBX: 000000000000001c RCX: 0000000000100000 RDX: 0000000000000000 RSI: 0000000005e6b00c RDI: 0000000000000230 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520006f5dac R12: ffff888040547c08 R13: ffff88803d7fadda R14: dffffc0000000000 R15: 0000000000000020 FS: 00007f2f6aff66c0(0000) GS:ffff88808c852000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002280 CR3: 0000000013282000 CR4: 0000000000352ef0 Call Trace: mac80211_hwsim_tx_frame_no_nl+0x16b/0x1760 drivers/net/wireless/virtual/mac80211_hwsim_main.c:1902 mac80211_hwsim_tx+0x1784/0x2500 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2261 drv_tx net/mac80211/driver-ops.h:38 [inline] ieee80211_tx_frags+0x3df/0x890 net/mac80211/tx.c:1746 __ieee80211_tx+0x267/0x580 net/mac80211/tx.c:1801 ieee80211_tx+0x312/0x4b0 net/mac80211/tx.c:1984 ieee80211_monitor_start_xmit+0xb33/0x1280 net/mac80211/tx.c:2479 __netdev_start_xmit include/linux/netdevice.h:5387 [inline] netdev_start_xmit include/linux/netdevice.h:5396 [inline] xmit_one net/core/dev.c:3889 [inline] dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:3905 __dev_queue_xmit+0x1435/0x37f0 net/core/dev.c:4872 packet_snd net/packet/af_packet.c:3082 [inline] packet_sendmsg+0x3d95/0x5040 net/packet/af_packet.c:3114 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x626/0x6c0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2f6a19ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2f6aff5fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f2f6a415fa0 RCX: 00007f2f6a19ce59 RDX: 0000000000000026 RSI: 0000200000000640 RDI: 0000000000000007 RBP: 00007f2f6a232e6f R08: 0000200000000380 R09: 0000000000000014 R10: 0000000004000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2f6a416038 R14: 00007f2f6a415fa0 R15: 00007ffff9cddab8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mac80211_hwsim_write_tsf+0x3a3/0x590 drivers/net/wireless/virtual/mac80211_hwsim_main.c:1628 Code: 81 c4 e8 49 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 1b bb 22 fb 48 8b 34 24 41 03 34 24 66 b8 20 03 31 d2 <66> f7 f5 0f b7 d8 4d 8d 65 0a 49 83 c5 0d 4c 89 e0 48 c1 e8 03 42 RSP: 0018:ffffc900037aedf0 EFLAGS: 00010246 RAX: 1ffff110080a0320 RBX: 000000000000001c RCX: 0000000000100000 RDX: 0000000000000000 RSI: 0000000005e6b00c RDI: 0000000000000230 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520006f5dac R12: ffff888040547c08 R13: ffff88803d7fadda R14: dffffc0000000000 R15: 0000000000000020 FS: 00007f2f6aff66c0(0000) GS:ffff88808c852000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002280 CR3: 0000000013282000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 81 c4 e8 49 00 00 add $0x49e8,%esp 6: 4c 89 e0 mov %r12,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) 12: 74 08 je 0x1c 14: 4c 89 e7 mov %r12,%rdi 17: e8 1b bb 22 fb call 0xfb22bb37 1c: 48 8b 34 24 mov (%rsp),%rsi 20: 41 03 34 24 add (%r12),%esi 24: 66 b8 20 03 mov $0x320,%ax 28: 31 d2 xor %edx,%edx * 2a: 66 f7 f5 div %bp <-- trapping instruction 2d: 0f b7 d8 movzwl %ax,%ebx 30: 4d 8d 65 0a lea 0xa(%r13),%r12 34: 49 83 c5 0d add $0xd,%r13 38: 4c 89 e0 mov %r12,%rax 3b: 48 c1 e8 03 shr $0x3,%rax 3f: 42 rex.X