IPv6: ADDRCONF(NETDEV_UP): vlan611: link is not ready IPv6: ADDRCONF(NETDEV_UP): vlan612: link is not ready netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:17982] Modules linked in: irq event stamp: 6639115 hardirqs last enabled at (6639114): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (6639115): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (6154712): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (6154715): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (6154715): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 17982 Comm: syz-executor.3 Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unwind_next_frame+0xf3a/0x1400 arch/x86/kernel/unwind_orc.c:555 Code: 48 be 00 00 00 00 00 fc ff df 49 8d 56 40 48 89 f8 48 c1 e8 03 44 0f b6 04 30 49 8d 47 03 49 89 c1 49 c1 e9 03 41 0f b6 34 31 <49> 89 f9 41 83 e1 07 45 38 c8 41 0f 9e c1 45 84 c0 41 0f 95 c0 45 RSP: 0018:ffff8880ba1076d0 EFLAGS: 00000a07 ORIG_RAX: ffffffffffffff13 RAX: ffffffff8b9096a7 RBX: 1ffff11017420ee3 RCX: ffffffff8b9096a9 RDX: ffff8880ba1078f8 RSI: 0000000000000000 RDI: ffffffff8b9096a6 RBP: 0000000000000002 R08: 0000000000000000 R09: 1ffffffff17212d4 R10: ffff8880ba107917 R11: 0000000000074071 R12: ffff8880ba1078a8 R13: ffff8880ba1078ed R14: ffff8880ba1078b8 R15: ffffffff8b9096a4 FS: 00007f3a27f1c700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005639f10e8a38 CR3: 000000009b65d000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __unwind_start+0x5b8/0x960 arch/x86/kernel/unwind_orc.c:667 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x72/0x190 arch/x86/kernel/stacktrace.c:43 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc_node mm/slab.c:3340 [inline] kmem_cache_alloc_node+0x133/0x3b0 mm/slab.c:3647 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __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:rcu_read_lock include/linux/rcupdate.h:628 [inline] RIP: 0010:lock_page_memcg+0x12d/0x220 mm/memcontrol.c:1908 Code: 00 00 0f 85 af 00 00 00 4c 8b 63 38 4d 85 e4 0f 85 7a ff ff ff 45 31 e4 48 83 c4 08 4c 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 4e 3c b4 ff 84 c0 0f 85 13 ff ff ff 48 c7 c2 80 e6 73 88 be 74 RSP: 0018:ffff88809246f6c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffffea00024dbfc0 RCX: 0000000000000001 RDX: ffffffff819d5d10 RSI: 0000000000000002 RDI: ffff88804535eec4 RBP: ffffea00024dbfc0 R08: 000000005eaf3dab R09: 0000000000000001 R10: ffff88804535eef0 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffea00024dbfc0 R15: 00007f3a2a81a000 page_remove_file_rmap+0x36/0xa30 mm/rmap.c:1212 page_remove_rmap+0xe5/0x120 mm/rmap.c:1297 zap_pte_range mm/memory.c:1350 [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+0x147d/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:1015 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1036 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: 0033:0x4665f9 Code: Bad RIP value. RSP: 002b:00007f3a27f1c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000097 RAX: 0000000000000000 RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff6276ef2f R14: 00007f3a27f1c300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8110 Comm: syz-fuzzer Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0033:0x415580 Code: c4 30 c3 48 8b 1d 40 5b 46 01 84 03 48 8b 14 d3 48 85 d2 74 1d 48 89 c3 48 c1 e8 0d 48 25 ff 1f 00 00 48 8b 8c c2 00 00 20 00 <48> 89 d8 e9 6c fe ff ff 31 c9 e9 65 fe ff ff cc cc cc cc cc cc cc RSP: 002b:000000c0004d5e70 EFLAGS: 00000206 RAX: 0000000000000187 RBX: 000000c00030e620 RCX: 00007f5a6b65dcc8 RDX: 00007f5a6b7d2000 RSI: 0000000000000001 RDI: fffffffffe5c3360 RBP: 000000c0004d5e98 R08: 00007f5a6b9d1fff R09: 000000c001d4b2c0 R10: 000000c00001d698 R11: 0000000000000008 R12: 000000c00030e620 R13: 0000000000000009 R14: 000080c002224000 R15: 000080c00222bfff FS: 000000c0004cc490 GS: 0000000000000000 ---------------- Code disassembly (best guess): 0: 48 be 00 00 00 00 00 movabs $0xdffffc0000000000,%rsi 7: fc ff df a: 49 8d 56 40 lea 0x40(%r14),%rdx e: 48 89 f8 mov %rdi,%rax 11: 48 c1 e8 03 shr $0x3,%rax 15: 44 0f b6 04 30 movzbl (%rax,%rsi,1),%r8d 1a: 49 8d 47 03 lea 0x3(%r15),%rax 1e: 49 89 c1 mov %rax,%r9 21: 49 c1 e9 03 shr $0x3,%r9 25: 41 0f b6 34 31 movzbl (%r9,%rsi,1),%esi * 2a: 49 89 f9 mov %rdi,%r9 <-- trapping instruction 2d: 41 83 e1 07 and $0x7,%r9d 31: 45 38 c8 cmp %r9b,%r8b 34: 41 0f 9e c1 setle %r9b 38: 45 84 c0 test %r8b,%r8b 3b: 41 0f 95 c0 setne %r8b 3f: 45 rex.RB