Hello, syzbot found the following issue on: HEAD commit: fc993be36f9e Merge git://git.kernel.org/pub/scm/linux/kern.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=147b18c5b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=b5949d4891208a1b dashboard link: https://syzkaller.appspot.com/bug?extid=befa3d613df263396a0c compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+befa3d613df263396a0c@xxxxxxxxxxxxxxxxxxxxxxxxx divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5890 Comm: syz-executor.0 Not tainted 5.16.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mac80211_hwsim_config+0x7fd/0xdb0 drivers/net/wireless/mac80211_hwsim.c:1957 Code: 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 11 00 0f 85 1a 03 00 00 48 8b b5 08 3d 00 00 48 8d bd a8 3d 00 00 31 d2 89 f1 <48> f7 f1 29 d6 b9 05 00 00 00 31 d2 48 69 f6 e8 03 00 00 e8 db a8 RSP: 0018:ffffc9000281fac0 EFLAGS: 00010246 RAX: 0005d233ac620269 RBX: ffff8880795fb2e0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880795ff088 RBP: ffff8880795fb2e0 R08: 000000000006cc08 R09: ffffffff8ff7ca67 R10: ffffffff8167b17f R11: 0000000000000036 R12: ffff8880795fefe8 R13: ffff8880795f8da0 R14: 1ffff92000503f6a R15: 0000000000000014 FS: 00007f8fcd540700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c820000 CR3: 00000000249cd000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> drv_config net/mac80211/driver-ops.h:145 [inline] ieee80211_hw_config+0x840/0x1480 net/mac80211/main.c:181 ieee80211_set_wiphy_params+0x4d7/0xdb0 net/mac80211/cfg.c:2688 rdev_set_wiphy_params+0x125/0x390 net/wireless/rdev-ops.h:569 cfg80211_wext_siwretry net/wireless/wext-compat.c:369 [inline] __cfg80211_wext_siwretry+0x2c6/0x5d0 net/wireless/wext-compat.c:1584 ioctl_standard_call+0xcd/0x1f0 net/wireless/wext-core.c:1017 wireless_process_ioctl+0xc8/0x4c0 net/wireless/wext-core.c:955 wext_ioctl_dispatch net/wireless/wext-core.c:988 [inline] wext_ioctl_dispatch net/wireless/wext-core.c:976 [inline] wext_handle_ioctl+0x26b/0x280 net/wireless/wext-core.c:1049 sock_ioctl+0x285/0x640 net/socket.c:1169 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f8fcffcaae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8fcd540188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8fd00ddf60 RCX: 00007f8fcffcaae9 RDX: 0000000020000000 RSI: 0000000000008b28 RDI: 0000000000000005 RBP: 00007f8fd0024f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd1c29a66f R14: 00007f8fcd540300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 7b3003b6289f2375 ]--- RIP: 0010:mac80211_hwsim_config+0x7fd/0xdb0 drivers/net/wireless/mac80211_hwsim.c:1957 Code: 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 11 00 0f 85 1a 03 00 00 48 8b b5 08 3d 00 00 48 8d bd a8 3d 00 00 31 d2 89 f1 <48> f7 f1 29 d6 b9 05 00 00 00 31 d2 48 69 f6 e8 03 00 00 e8 db a8 RSP: 0018:ffffc9000281fac0 EFLAGS: 00010246 RAX: 0005d233ac620269 RBX: ffff8880795fb2e0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880795ff088 RBP: ffff8880795fb2e0 R08: 000000000006cc08 R09: ffffffff8ff7ca67 R10: ffffffff8167b17f R11: 0000000000000036 R12: ffff8880795fefe8 R13: ffff8880795f8da0 R14: 1ffff92000503f6a R15: 0000000000000014 FS: 00007f8fcd540700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdba49e7012 CR3: 00000000249cd000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 7: fc ff df a: 48 c1 e9 03 shr $0x3,%rcx e: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) 12: 0f 85 1a 03 00 00 jne 0x332 18: 48 8b b5 08 3d 00 00 mov 0x3d08(%rbp),%rsi 1f: 48 8d bd a8 3d 00 00 lea 0x3da8(%rbp),%rdi 26: 31 d2 xor %edx,%edx 28: 89 f1 mov %esi,%ecx * 2a: 48 f7 f1 div %rcx <-- trapping instruction 2d: 29 d6 sub %edx,%esi 2f: b9 05 00 00 00 mov $0x5,%ecx 34: 31 d2 xor %edx,%edx 36: 48 69 f6 e8 03 00 00 imul $0x3e8,%rsi,%rsi 3d: e8 .byte 0xe8 3e: db .byte 0xdb 3f: a8 .byte 0xa8 --- This report is generated by a bot. 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