------------[ cut here ]------------ NETDEV WATCHDOG: sl47 (): transmit queue 0 timed out WARNING: CPU: 0 PID: 10457 at net/sched/sch_generic.c:442 dev_watchdog+0x87a/0xa10 net/sched/sch_generic.c:442 Modules linked in: CPU: 0 PID: 10457 Comm: syz-executor531 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dev_watchdog+0x87a/0xa10 net/sched/sch_generic.c:442 Code: 0b e9 d0 fd ff ff 48 89 ef c6 05 51 60 a6 05 01 e8 3b 44 e9 ff 44 89 f9 48 89 ee 48 c7 c7 a0 16 78 89 48 89 c2 e8 66 28 7e 01 <0f> 0b e9 dc fd ff ff 4c 89 ef e8 57 0e 2b fb e9 77 fa ff ff 48 8b RSP: 0018:ffffc90000007cf0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff888019f98500 RCX: 0000000000000000 RDX: 0000000000000103 RSI: ffffffff888af2a0 RDI: fffff52000000f90 RBP: ffff888019f98000 R08: 0000000000000001 R09: ffffffff8e0db89f R10: fffffbfff1c1b713 R11: 572056454454454e R12: 00000000ffffbe01 R13: ffff88801da79c00 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555c775d0 CR3: 00000001afa92000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x163/0x4b0 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x52a/0x8b0 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0x9c/0x190 kernel/time/timer.c:1744 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:lock_page_memcg+0x1b5/0x4f0 mm/memcontrol.c:2185 Code: 41 b8 01 00 00 00 4c 89 f7 e8 e7 f2 ab ff 58 48 c7 c6 86 ff a4 81 4c 89 f7 e8 c7 eb ab ff 4d 85 ff 0f 85 2e 01 00 00 41 55 9d <4c> 8d ab c0 0b 00 00 be 04 00 00 00 4c 89 ef e8 07 b9 fb ff 4c 89 RSP: 0018:ffffc90038537760 EFLAGS: 00000286 RAX: 0000000000000279 RBX: ffff888140738000 RCX: ffffffff81506cee RDX: 0000000000000000 RSI: ffffffff888af2a0 RDI: ffffffff88dc5000 RBP: ffffc900385377c0 R08: 0000000000000001 R09: ffffffff8e0db7f7 R10: fffffbfff1c1b6fe R11: 0000000000000001 R12: dffffc0000000000 R13: 0000000000000286 R14: ffff888140738688 R15: 0000000000000200 page_remove_rmap+0x1d/0xcd0 mm/rmap.c:1334 zap_pte_range mm/memory.c:1264 [inline] zap_pmd_range mm/memory.c:1368 [inline] zap_pud_range mm/memory.c:1397 [inline] zap_p4d_range mm/memory.c:1418 [inline] unmap_page_range+0x99e/0x1eb0 mm/memory.c:1439 unmap_vmas+0x14c/0x280 mm/memory.c:1516 exit_mmap+0x245/0x4c0 mm/mmap.c:3220 __mmput+0xeb/0x3e0 kernel/fork.c:1082 exit_mm kernel/exit.c:501 [inline] do_exit+0x9e9/0x2570 kernel/exit.c:812 do_group_exit+0xe7/0x290 kernel/exit.c:922 get_signal+0x36c/0x1b90 kernel/signal.c:2773 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f67cf3c8849 Code: Unable to access opcode bytes at RIP 0x7f67cf3c881f. RSP: 002b:00007f67cf37a318 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007f67cf4503e8 RCX: 00007f67cf3c8849 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f67cf4503ec RBP: 00007f67cf4503e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 6d74702f7665642f R13: 00007ffd1d64064f R14: 00007f67cf37a400 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 41 b8 01 00 00 00 mov $0x1,%r8d 6: 4c 89 f7 mov %r14,%rdi 9: e8 e7 f2 ab ff callq 0xffabf2f5 e: 58 pop %rax f: 48 c7 c6 86 ff a4 81 mov $0xffffffff81a4ff86,%rsi 16: 4c 89 f7 mov %r14,%rdi 19: e8 c7 eb ab ff callq 0xffabebe5 1e: 4d 85 ff test %r15,%r15 21: 0f 85 2e 01 00 00 jne 0x155 27: 41 55 push %r13 29: 9d popfq * 2a: 4c 8d ab c0 0b 00 00 lea 0xbc0(%rbx),%r13 <-- trapping instruction 31: be 04 00 00 00 mov $0x4,%esi 36: 4c 89 ef mov %r13,%rdi 39: e8 07 b9 fb ff callq 0xfffbb945 3e: 4c rex.WR 3f: 89 .byte 0x89