------------[ cut here ]------------ NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out 37700 ms WARNING: CPU: 1 PID: 10949 at net/sched/sch_generic.c:525 dev_watchdog+0x8c7/0x8f0 net/sched/sch_generic.c:525 Modules linked in: CPU: 1 PID: 10949 Comm: syz-executor.3 Not tainted 6.6.0-next-20231103-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:dev_watchdog+0x8c7/0x8f0 net/sched/sch_generic.c:525 Code: 8b 5c 24 10 c6 05 70 c1 73 06 01 48 89 df e8 40 32 e6 ff 45 89 e8 89 e9 48 89 de 48 89 c2 48 c7 c7 20 80 ec 8b e8 69 13 be f8 <0f> 0b e9 2b fd ff ff e8 5d 95 f8 f8 0f 0b e9 c6 fc ff ff e8 11 b2 RSP: 0018:ffffc900001f0bd8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888024568000 RCX: ffffffff814e7e79 RDX: ffff888028a31dc0 RSI: ffffffff814e7e86 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888024f6d000 R13: 0000000000009344 R14: ffff888024568548 R15: 0000000100003806 FS: 00007f501c9956c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020077000 CR3: 000000006515b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x1a0/0x590 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x769/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x216/0x95f kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb5/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline] RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] RIP: 0010:rcu_is_watching+0x5c/0xb0 kernel/rcu/tree.c:700 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 48 03 1c ed 60 fa a6 8c 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1c 8b 03 c1 e8 02 RSP: 0018:ffffc90003b3f620 EFLAGS: 00000a06 RAX: dffffc0000000000 RBX: ffff8880b9936de8 RCX: ffffffff8169557b RDX: 0000000000000000 RSI: ffffffff8b2efd00 RDI: ffffffff8ca6fa68 RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff1e341ba R10: ffffffff8f1a0dd7 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8cfae060 R15: 0000000000000000 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x477/0x530 kernel/locking/lockdep.c:5724 rcu_lock_acquire include/linux/rcupdate.h:301 [inline] rcu_read_lock include/linux/rcupdate.h:747 [inline] page_ext_get+0x3a/0x310 mm/page_ext.c:508 page_table_check_set.part.0+0x3a/0x7f0 mm/page_table_check.c:109 page_table_check_set mm/page_table_check.c:196 [inline] __page_table_check_ptes_set+0x5e3/0xb70 mm/page_table_check.c:196 page_table_check_ptes_set include/linux/page_table_check.h:74 [inline] set_ptes include/linux/pgtable.h:234 [inline] do_anonymous_page mm/memory.c:4217 [inline] do_pte_missing mm/memory.c:3728 [inline] handle_pte_fault mm/memory.c:5038 [inline] __handle_mm_fault+0x3117/0x3d60 mm/memory.c:5179 handle_mm_fault+0x474/0x9f0 mm/memory.c:5344 do_user_addr_fault+0x3cf/0x1000 arch/x86/mm/fault.c:1413 handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x5b/0xd0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:fault_in_readable+0x106/0x200 mm/gup.c:1995 Code: ff 0f 00 00 31 c0 4c 89 eb 48 81 e5 00 f0 ff ff 4c 39 ed 48 0f 42 e8 e8 48 d8 c0 ff 48 39 dd 0f 84 e0 00 00 00 e8 3a d8 c0 ff <44> 8a 3b e8 32 d8 c0 ff 48 81 c3 00 10 00 00 48 39 eb 44 88 7c 24 RSP: 0018:ffffc90003b3fb20 EFLAGS: 00050246 RAX: 0000000000040000 RBX: 0000000020077000 RCX: ffffc900050d9000 RDX: 0000000000040000 RSI: ffffffff81c826a6 RDI: 0000000000000007 RBP: 0000000020078000 R08: 0000000000000007 R09: 0000000000000000 R10: 00000000000001c0 R11: 0000000000000001 R12: 0000000000001000 R13: 00000000200761c0 R14: 1ffff92000767f64 R15: 0000000000000100 fault_in_iov_iter_readable+0xfd/0x2c0 lib/iov_iter.c:94 generic_perform_write+0x1d5/0x600 mm/filemap.c:3908 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4013 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4039 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x64d/0xdf0 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f501bc7cae9 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:00007f501c9950c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f501bd9bf80 RCX: 00007f501bc7cae9 RDX: 000000000208e24b RSI: 00000000200001c0 RDI: 0000000000000004 RBP: 00007f501bcc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f501bd9bf80 R15: 00007ffc95636dc8 ---------------- Code disassembly (best guess): 0: 48 89 fa mov %rdi,%rdx 3: 48 c1 ea 03 shr $0x3,%rdx 7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) b: 75 54 jne 0x61 d: 48 03 1c ed 60 fa a6 add -0x735905a0(,%rbp,8),%rbx 14: 8c 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 da mov %rbx,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 1c jne 0x57 3b: 8b 03 mov (%rbx),%eax 3d: c1 e8 02 shr $0x2,%eax