------------[ cut here ]------------ NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out WARNING: CPU: 0 PID: 7935 at net/sched/sch_generic.c:478 dev_watchdog+0x93c/0xb10 net/sched/sch_generic.c:477 Modules linked in: CPU: 0 PID: 7935 Comm: syz-executor.0 Not tainted 5.15.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:dev_watchdog+0x93c/0xb10 net/sched/sch_generic.c:477 Code: 05 8c 90 7b 05 01 48 8b 5c 24 28 48 89 df e8 3b c6 e2 ff 48 c7 c7 40 c3 7c 8b 48 89 de 48 89 c2 48 8b 4c 24 10 e8 e4 80 f6 f8 <0f> 0b e9 fe fc ff ff e8 88 d8 2a f9 0f 0b e9 83 fc ff ff 44 89 e1 vkms_vblank_simulate: vblank timer overrun RSP: 0018:ffffc90000007b10 EFLAGS: 00010246 RAX: 056fe42fd7874400 RBX: ffff888076eee000 RCX: ffff88801ddcbb80 RDX: 0000000000000102 RSI: 0000000000000102 RDI: 0000000000000000 RBP: 00000000ffffdf01 R08: ffffffff8166860c R09: fffff52000000ea5 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888076eee448 R13: ffff888076eee440 R14: ffff888076eee540 R15: ffff888076eee460 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f928000 CR3: 0000000072648000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x7c/0x80 kernel/kcov.c:272 Code: 8d 42 28 4c 39 d0 77 22 89 f8 89 f6 48 c7 44 0a 08 01 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 49 ff c1 4c 89 09 0f 1f 00 4c 8b 04 24 65 48 8b 15 14 10 82 7e 65 8b 05 15 10 82 RSP: 0018:ffffc9000342f700 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81bd5fb5 RDX: ffff88801ddcbb80 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff81bd5fd9 R09: fffff94000329f27 R10: 0000000000000000 R11: dffffc0000000001 R12: 00007f78232c0000 R13: ffffea000194f908 R14: ffffea000194f908 R15: ffffea000194f900 arch_atomic_add_negative arch/x86/include/asm/atomic.h:152 [inline] atomic_add_negative include/linux/atomic/atomic-instrumented.h:557 [inline] page_remove_file_rmap mm/rmap.c:1283 [inline] page_remove_rmap+0x5c9/0x11e0 mm/rmap.c:1354 zap_pte_range mm/memory.c:1373 [inline] zap_pmd_range mm/memory.c:1494 [inline] zap_pud_range mm/memory.c:1523 [inline] zap_p4d_range mm/memory.c:1544 [inline] unmap_page_range+0xffa/0x2630 mm/memory.c:1565 unmap_vmas+0x1f8/0x390 mm/memory.c:1642 exit_mmap+0x3b6/0x670 mm/mmap.c:3186 __mmput+0x112/0x3b0 kernel/fork.c:1126 exit_mm+0x688/0x7f0 kernel/exit.c:548 do_exit+0x626/0x2480 kernel/exit.c:859 do_group_exit+0x144/0x310 kernel/exit.c:994 __do_sys_exit_group kernel/exit.c:1005 [inline] __se_sys_exit_group kernel/exit.c:1003 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1003 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f7823ec2ee9 Code: Unable to access opcode bytes at RIP 0x7f7823ec2ebf. RSP: 002b:00007ffe6ffabfa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f7823ec2ee9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 00007f7823e46000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 ---------------- Code disassembly (best guess): 0: 8d 42 28 lea 0x28(%rdx),%eax 3: 4c 39 d0 cmp %r10,%rax 6: 77 22 ja 0x2a 8: 89 f8 mov %edi,%eax a: 89 f6 mov %esi,%esi c: 48 c7 44 0a 08 01 00 movq $0x1,0x8(%rdx,%rcx,1) 13: 00 00 15: 48 89 44 0a 10 mov %rax,0x10(%rdx,%rcx,1) 1a: 48 89 74 0a 18 mov %rsi,0x18(%rdx,%rcx,1) 1f: 4c 89 44 0a 20 mov %r8,0x20(%rdx,%rcx,1) 24: 49 ff c1 inc %r9 27: 4c 89 09 mov %r9,(%rcx) * 2a: c3 ret <-- trapping instruction 2b: 0f 1f 00 nopl (%rax) 2e: 4c 8b 04 24 mov (%rsp),%r8 32: 65 48 8b 15 14 10 82 mov %gs:0x7e821014(%rip),%rdx # 0x7e82104e 39: 7e 3a: 65 gs 3b: 8b .byte 0x8b 3c: 05 .byte 0x5 3d: 15 .byte 0x15 3e: 10 .byte 0x10 3f: 82 .byte 0x82