divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4660 Comm: kworker/u4:14 Not tainted 5.15.164-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: phy21 ieee80211_roc_work RIP: 0010:mac80211_hwsim_bss_info_changed+0x419/0xfd0 drivers/net/wireless/mac80211_hwsim.c:2037 Code: 49 03 1f 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 49 89 c5 74 08 4c 89 f7 e8 a1 c4 d6 fb 49 8b 0e 89 ce 48 89 d8 31 d2 <48> f7 f6 29 d1 48 69 f1 e8 03 00 00 48 8b 7c 24 20 31 d2 b9 05 00 RSP: 0018:ffffc90002f87a80 EFLAGS: 00010246 RAX: 0006988821660b92 RBX: 0006988821660b92 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000040 RBP: ffffc90002f87b58 R08: ffffffff816fb571 R09: fffffbfff1f8e026 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000200 R13: dffffc0000000000 R14: ffff8880528fef80 R15: ffff8880528ff0e0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000202c1030 CR3: 000000005ef94000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drv_bss_info_changed net/mac80211/driver-ops.h:177 [inline] ieee80211_bss_info_change_notify+0x2fd/0x540 net/mac80211/main.c:210 ieee80211_offchannel_return+0x325/0x460 net/mac80211/offchannel.c:158 __ieee80211_roc_work+0x287/0x340 net/mac80211/offchannel.c:444 ieee80211_roc_work+0x2b/0x40 net/mac80211/offchannel.c:458 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Modules linked in: ---[ end trace e4221f902d53cd71 ]--- RIP: 0010:mac80211_hwsim_bss_info_changed+0x419/0xfd0 drivers/net/wireless/mac80211_hwsim.c:2037 Code: 49 03 1f 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 49 89 c5 74 08 4c 89 f7 e8 a1 c4 d6 fb 49 8b 0e 89 ce 48 89 d8 31 d2 <48> f7 f6 29 d1 48 69 f1 e8 03 00 00 48 8b 7c 24 20 31 d2 b9 05 00 RSP: 0018:ffffc90002f87a80 EFLAGS: 00010246 RAX: 0006988821660b92 RBX: 0006988821660b92 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000040 RBP: ffffc90002f87b58 R08: ffffffff816fb571 R09: fffffbfff1f8e026 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000200 R13: dffffc0000000000 R14: ffff8880528fef80 R15: ffff8880528ff0e0 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020404030 CR3: 000000005be91000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 49 03 1f add (%r15),%rbx 3: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax a: fc ff df d: 41 80 7c 05 00 00 cmpb $0x0,0x0(%r13,%rax,1) 13: 49 89 c5 mov %rax,%r13 16: 74 08 je 0x20 18: 4c 89 f7 mov %r14,%rdi 1b: e8 a1 c4 d6 fb call 0xfbd6c4c1 20: 49 8b 0e mov (%r14),%rcx 23: 89 ce mov %ecx,%esi 25: 48 89 d8 mov %rbx,%rax 28: 31 d2 xor %edx,%edx * 2a: 48 f7 f6 div %rsi <-- trapping instruction 2d: 29 d1 sub %edx,%ecx 2f: 48 69 f1 e8 03 00 00 imul $0x3e8,%rcx,%rsi 36: 48 8b 7c 24 20 mov 0x20(%rsp),%rdi 3b: 31 d2 xor %edx,%edx 3d: b9 .byte 0xb9 3e: 05 .byte 0x5