Oops: divide error: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 6188 Comm: syz-executor.0 Not tainted 6.13.0-rc2-syzkaller-g7cb1b4663150 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:drm_mode_vrefresh+0x110/0x1c0 drivers/gpu/drm/drm_modes.c:1305 Code: 41 0f b7 06 66 83 f8 02 b9 01 00 00 00 0f 43 c8 0f b7 c1 44 0f af f8 89 d8 48 69 c8 e8 03 00 00 44 89 f8 d1 e8 48 01 c8 31 d2 <49> f7 f7 48 89 c3 eb 0c e8 73 f4 31 fc eb 05 e8 6c f4 31 fc 89 d8 RSP: 0018:ffffc900040178b0 EFLAGS: 00010246 RAX: 000000000001f400 RBX: 0000000000000080 RCX: 000000000001f400 RDX: 0000000000000000 RSI: 0000000000008000 RDI: ffff888034534c18 RBP: 0000000000000080 R08: ffffffff856d6924 R09: 1ffff92000802fc6 R10: dffffc0000000000 R11: fffff52000802fc7 R12: dffffc0000000000 R13: ffff888034534c00 R14: ffff888034534c16 R15: 0000000000000000 FS: 00007fcd421ef6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffc6d8cb98 CR3: 000000007d8ae000 CR4: 0000000000350ef0 Call Trace: drm_mode_setcrtc+0xd5a/0x1e30 drivers/gpu/drm/drm_crtc.c:778 drm_ioctl_kernel+0x339/0x440 drivers/gpu/drm/drm_ioctl.c:796 drm_ioctl+0x60e/0xad0 drivers/gpu/drm/drm_ioctl.c:893 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf7/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcd4147cb29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcd421ef0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fcd4159bf80 RCX: 00007fcd4147cb29 RDX: 0000000020000180 RSI: 00000000c06864a2 RDI: 0000000000000003 RBP: 00007fcd414c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fcd4159bf80 R15: 00007ffd8dbd4cb8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:drm_mode_vrefresh+0x110/0x1c0 drivers/gpu/drm/drm_modes.c:1305 Code: 41 0f b7 06 66 83 f8 02 b9 01 00 00 00 0f 43 c8 0f b7 c1 44 0f af f8 89 d8 48 69 c8 e8 03 00 00 44 89 f8 d1 e8 48 01 c8 31 d2 <49> f7 f7 48 89 c3 eb 0c e8 73 f4 31 fc eb 05 e8 6c f4 31 fc 89 d8 RSP: 0018:ffffc900040178b0 EFLAGS: 00010246 RAX: 000000000001f400 RBX: 0000000000000080 RCX: 000000000001f400 RDX: 0000000000000000 RSI: 0000000000008000 RDI: ffff888034534c18 RBP: 0000000000000080 R08: ffffffff856d6924 R09: 1ffff92000802fc6 R10: dffffc0000000000 R11: fffff52000802fc7 R12: dffffc0000000000 R13: ffff888034534c00 R14: ffff888034534c16 R15: 0000000000000000 FS: 00007fcd421ef6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8c15effa8a CR3: 000000007d8ae000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 41 0f b7 06 movzwl (%r14),%eax 4: 66 83 f8 02 cmp $0x2,%ax 8: b9 01 00 00 00 mov $0x1,%ecx d: 0f 43 c8 cmovae %eax,%ecx 10: 0f b7 c1 movzwl %cx,%eax 13: 44 0f af f8 imul %eax,%r15d 17: 89 d8 mov %ebx,%eax 19: 48 69 c8 e8 03 00 00 imul $0x3e8,%rax,%rcx 20: 44 89 f8 mov %r15d,%eax 23: d1 e8 shr %eax 25: 48 01 c8 add %rcx,%rax 28: 31 d2 xor %edx,%edx * 2a: 49 f7 f7 div %r15 <-- trapping instruction 2d: 48 89 c3 mov %rax,%rbx 30: eb 0c jmp 0x3e 32: e8 73 f4 31 fc call 0xfc31f4aa 37: eb 05 jmp 0x3e 39: e8 6c f4 31 fc call 0xfc31f4aa 3e: 89 d8 mov %ebx,%eax