------------[ cut here ]------------ WARNING: CPU: 0 PID: 8485 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21 Modules linked in: CPU: 0 PID: 8485 Comm: syz-executor920 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21 Code: 85 9e 00 00 00 48 8b 95 b8 01 00 00 4c 89 e1 bf 02 00 00 00 48 c7 c6 20 9e d5 89 e8 1c f5 ef ff e9 e5 fe ff ff e8 22 fb 2c fd <0f> 0b e9 88 fd ff ff e8 46 2a 70 fd e9 11 fe ff ff 4c 89 ef e8 39 RSP: 0018:ffffc90000007de8 EFLAGS: 00010046 RAX: 0000000000010001 RBX: ffff888019d21e48 RCX: 0000000000000000 RDX: ffff8880123b5340 RSI: ffffffff8445eebe RDI: 0000000000000003 RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8445ec43 R11: 0000000000000000 R12: ffff888019d20d40 R13: 0000000000fe4c00 R14: ffff8880b9c26a00 R15: ffffffff8445eba0 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0063) knlGS:00000000099c8380 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000080e3121 CR3: 000000001d2a3000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1519 [inline] __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1583 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106 asm_call_irq_on_stack+0xf/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0xbd/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:console_unlock+0x7b6/0xbb0 kernel/printk/printk.c:2580 Code: 00 2e e8 8b e8 4b 98 fd ff e8 c6 3d 00 00 31 ff 4c 89 ee e8 5c a8 17 00 4d 85 ed 0f 85 3a 02 00 00 e8 5e a0 17 00 ff 34 24 9d <8b> 5c 24 34 31 ff 89 de e8 cd a7 17 00 85 db 0f 84 eb f9 ff ff e8 RSP: 0018:ffffc9000176eaa8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880123b5340 RSI: ffffffff815b4982 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8fa7e7a7 R10: fffffbfff1f4fcf4 R11: 0000000000000000 R12: ffffffff84aaf530 R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc9000176eb08 vprintk_emit+0x189/0x490 kernel/printk/printk.c:2092 vprintk_func+0x8d/0x1e0 kernel/printk/printk_safe.c:393 printk+0xba/0xed kernel/printk/printk.c:2140 batadv_check_known_mac_addr.cold+0x23/0x28 net/batman-adv/hard-interface.c:517 batadv_hard_if_event+0x554/0x14f0 net/batman-adv/hard-interface.c:1026 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2063 call_netdevice_notifiers_extack net/core/dev.c:2075 [inline] call_netdevice_notifiers net/core/dev.c:2089 [inline] dev_set_mac_address+0x2d5/0x3e0 net/core/dev.c:8918 dev_set_mac_address_user+0x2d/0x50 net/core/dev.c:8932 do_setlink+0x1695/0x3a70 net/core/rtnetlink.c:2663 __rtnl_newlink+0xdc1/0x1700 net/core/rtnetlink.c:3376 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3491 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5553 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 __sys_sendto+0x21c/0x320 net/socket.c:1975 __do_compat_sys_socketcall+0x47f/0x660 net/compat.c:476 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline] __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:139 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:164 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f9d549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:000000000822f850 EFLAGS: 00000202 ORIG_RAX: 0000000000000066 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 000000000822f864 RDX: 0000000000000000 RSI: 0000000008108000 RDI: 0000000008231088 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000