8021q: adding VLAN 0 to HW filter on device batadv1082 device vlan999 entered promiscuous mode bond1074: making interface vlan999 the new active one bond1074: Enslaving vlan999 as an active interface with an up link watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:11936] Modules linked in: irq event stamp: 4483793 hardirqs last enabled at (4483792): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (4483793): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (4449896): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (4449899): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (4449899): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 11936 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x50/0x80 kernel/locking/spinlock.c:192 Code: c0 98 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 31 48 83 3d 01 31 d8 01 00 74 25 fb 66 0f 1f 44 00 00 01 00 00 00 e8 26 1b 28 f9 65 8b 05 9f 8d e8 77 85 c0 74 02 5d RSP: 0018:ffff8880ba107de0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3053 RBX: dffffc0000000000 RCX: 1ffff11040e649cd RDX: dffffc0000000000 RSI: ffff888207324e48 RDI: ffff888207324e44 RBP: ffff8880ba122b40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8688f6d0 R13: ffff8880ba122b40 R14: ffff8880ba107e78 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002001f000 CR3: 0000000009e6d000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: expire_timers+0x238/0x4e0 kernel/time/timer.c:1374 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:__tlb_remove_page_size+0xde/0x470 mm/memory.c:316 Code: c1 ea 03 80 3c 02 00 0f 85 31 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 28 48 8d 7d 08 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e e0 02 00 00 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffff88821845f738 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff88821845f9b0 RCX: ffffffff818b3334 RDX: 1ffff1104518fe01 RSI: ffffffff818b3342 RDI: ffff888228c7f008 RBP: ffff888228c7f000 R08: 0000000000000000 R09: 0000000000001000 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000001000 R13: ffffea000270e840 R14: ffffea000270e840 R15: ffff88821845f9d8 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1353 [inline] zap_pmd_range mm/memory.c:1463 [inline] zap_pud_range mm/memory.c:1492 [inline] zap_p4d_range mm/memory.c:1513 [inline] unmap_page_range+0x14e7/0x2c50 mm/memory.c:1534 unmap_single_vma+0x198/0x300 mm/memory.c:1579 unmap_vmas+0xa9/0x180 mm/memory.c:1609 exit_mmap+0x2b9/0x530 mm/mmap.c:3093 __mmput kernel/fork.c:1016 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1037 exit_mm kernel/exit.c:549 [inline] do_exit+0xaec/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f5c2c1f20e9 Code: Bad RIP value. RSP: 002b:00007f5c2ab46168 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: 0000000000010000 RBX: 00007f5c2c305030 RCX: 00007f5c2c1f20e9 RDX: 000000000000000f RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f5c2c24c08d R08: 000000000004ffe0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd4e1fbd4f R14: 00007f5c2ab46300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 23 Comm: kworker/u4:1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_dat_purge RIP: 0010:trace_softirqs_on+0x74/0x3b0 kernel/locking/lockdep.c:2924 Code: 54 02 00 00 65 4c 8b 24 25 c0 df 01 00 49 8d bc 24 84 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b1 02 00 00 41 RSP: 0018:ffff8880b5047c88 EFLAGS: 00000803 RAX: dffffc0000000000 RBX: ffffffff87d70052 RCX: 1ffffffff148be2c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b503ce84 RBP: ffff8880b503c600 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b503c600 R13: ffff888019c85c28 R14: ffffffff87d6fac0 R15: 000000000000018d FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0532705fa3 CR3: 00000000a0b30000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __local_bh_enable_ip+0x1cc/0x270 kernel/softirq.c:177 spin_unlock_bh include/linux/spinlock.h:374 [inline] __batadv_dat_purge.part.0+0x232/0x330 net/batman-adv/distributed-arp-table.c:151 __batadv_dat_purge net/batman-adv/distributed-arp-table.c:132 [inline] batadv_dat_purge+0x47/0x60 net/batman-adv/distributed-arp-table.c:170 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess), 5 bytes skipped: 0: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 7: fc ff df a: 48 c1 e8 03 shr $0x3,%rax e: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 12: 75 31 jne 0x45 14: 48 83 3d 01 31 d8 01 cmpq $0x0,0x1d83101(%rip) # 0x1d8311d 1b: 00 1c: 74 25 je 0x43 1e: fb sti 1f: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) * 25: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction 2a: e8 26 1b 28 f9 callq 0xf9281b55 2f: 65 8b 05 9f 8d e8 77 mov %gs:0x77e88d9f(%rip),%eax # 0x77e88dd5 36: 85 c0 test %eax,%eax 38: 74 02 je 0x3c 3a: 5d pop %rbp