bisecting fixing commit since e8b767f5e04097aaedcd6e06e2270f9fe5282696
building syzkaller on 20955a246688253cfb50ff7ed8bd1fc9cf699c1d
testing commit e8b767f5e04097aaedcd6e06e2270f9fe5282696
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7585ec529dbb35c4e3c8c6c162bd97a9d849966f0ecaf21fb4540a6a5cd45ec4
all runs: crashed: divide error in ath9k_htc_swba
testing current HEAD e8a4e1c1bb697b1d9fc48f0e56dc0f50bc024bee
testing commit e8a4e1c1bb697b1d9fc48f0e56dc0f50bc024bee
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 4d94f22d1628aa2c6b36f6ebd7ccda0b01cd5593179c67f546ac78b3c1d2470e
all runs: crashed: divide error in ath9k_htc_swba
revisions tested: 2, total time: 20m38.893468525s (build: 13m27.825897725s, test: 6m39.07006861s)
the crash still happens on HEAD
commit msg: Merge tag 'loongarch-fixes-5.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
crash: divide error in ath9k_htc_swba
divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 5.19.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:ath9k_htc_choose_bslot drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:277 [inline]
RIP: 0010:ath9k_htc_swba+0x18b/0xb10 drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:310
Code: c0 40 84 c6 0f 85 b1 08 00 00 48 8b 55 00 0f b7 c9 bd 01 00 00 00 48 0f ca 48 89 d0 c1 ea 0a 48 c1 e8 20 c1 e0 16 09 d0 31 d2 <f7> f1 8d 04 12 31 d2 f7 f1 29 c5 48 8d 83 b0 03 00 00 48 89 c7 48
RSP: 0018:ffffc9000035fcb0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88806fa13340 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed1002bec63e R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000001002 R14: ffff88806fa13340 R15: ffff88807919fe40
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001038 CR3: 00000000720bd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ath9k_wmi_event_tasklet+0x2c2/0x430 drivers/net/wireless/ath/ath9k/wmi.c:165
 tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:797
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571
 run_ksoftirqd kernel/softirq.c:934 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:926
 smpboot_thread_fn+0x548/0x8c0 kernel/smpboot.c:164
 kthread+0x299/0x340 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ath9k_htc_choose_bslot drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:277 [inline]
RIP: 0010:ath9k_htc_swba+0x18b/0xb10 drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:310
Code: c0 40 84 c6 0f 85 b1 08 00 00 48 8b 55 00 0f b7 c9 bd 01 00 00 00 48 0f ca 48 89 d0 c1 ea 0a 48 c1 e8 20 c1 e0 16 09 d0 31 d2 <f7> f1 8d 04 12 31 d2 f7 f1 29 c5 48 8d 83 b0 03 00 00 48 89 c7 48
RSP: 0018:ffffc9000035fcb0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88806fa13340 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed1002bec63e R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000001002 R14: ffff88806fa13340 R15: ffff88807919fe40
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001038 CR3: 00000000720bd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c0 40 84 c6          	rolb   $0xc6,-0x7c(%rax)
   4:	0f 85 b1 08 00 00    	jne    0x8bb
   a:	48 8b 55 00          	mov    0x0(%rbp),%rdx
   e:	0f b7 c9             	movzwl %cx,%ecx
  11:	bd 01 00 00 00       	mov    $0x1,%ebp
  16:	48 0f ca             	bswap  %rdx
  19:	48 89 d0             	mov    %rdx,%rax
  1c:	c1 ea 0a             	shr    $0xa,%edx
  1f:	48 c1 e8 20          	shr    $0x20,%rax
  23:	c1 e0 16             	shl    $0x16,%eax
  26:	09 d0                	or     %edx,%eax
  28:	31 d2                	xor    %edx,%edx
* 2a:	f7 f1                	div    %ecx <-- trapping instruction
  2c:	8d 04 12             	lea    (%rdx,%rdx,1),%eax
  2f:	31 d2                	xor    %edx,%edx
  31:	f7 f1                	div    %ecx
  33:	29 c5                	sub    %eax,%ebp
  35:	48 8d 83 b0 03 00 00 	lea    0x3b0(%rbx),%rax
  3c:	48 89 c7             	mov    %rax,%rdi
  3f:	48                   	rex.W