sit: Dst spoofed 0.0.0.0/2002::600:6300:6000 -> 0.0.0.0/2002:b000:2002:e000:0:300:8:0 nla_parse: 12 callbacks suppressed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:2237] Modules linked in: irq event stamp: 3421859 hardirqs last enabled at (3421858): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3421859): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (47644): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (47877): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (47877): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 2237 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:phys_addr_valid arch/x86/mm/physaddr.h:7 [inline] RIP: 0010:__phys_addr+0x71/0x110 arch/x86/mm/physaddr.c:27 Code: 00 4c 39 e5 72 55 e8 ee 26 37 00 48 c7 c0 a9 c6 26 8b 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 0f b6 14 11 <38> c2 7f 04 84 d2 75 77 0f b6 0d f9 67 fb 09 4c 89 e3 31 ff 48 d3 RSP: 0018:ffff8880ba007bb0 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffff88804d0c1480 RCX: 1ffffffff164d8d5 RDX: 0000000000000000 RSI: ffffffff812b5e82 RDI: 0000000000000006 RBP: ffff8880cd0c1480 R08: 0000000000490220 R09: ffff8880cd0c1480 R10: 0000000000000006 R11: 000000001f4a67b3 R12: 000000004d0c1480 R13: 00000000ffffffff R14: 0000000000000000 R15: ffff888046721980 FS: 00007f56c891c700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560478e18a38 CR3: 000000003fa2a000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virt_to_head_page include/linux/mm.h:665 [inline] virt_to_cache mm/slab.c:399 [inline] ksize+0x16/0x60 mm/slab.c:4483 __alloc_skb+0xc7/0x560 net/core/skbuff.c:212 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. 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:touch_buffer fs/buffer.c:59 [inline] RIP: 0010:__find_get_block+0x2ff/0xde0 fs/buffer.c:1299 Code: 0f b2 ff 84 db 0f 85 6d 01 00 00 e8 fb 0d b2 ff 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 06 0a 00 00 49 8b 7c 24 10 e8 31 4a d1 ff e8 cc 0d b2 ff 4c RSP: 0018:ffff8880150afa20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81b07958 RDX: 1ffff11008495c6b RSI: ffffffff81b07775 RDI: ffff8880424ae358 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880424ae348 R13: 00000000000003a5 R14: 0000000000001000 R15: ffff8880424ae348 sb_find_get_block include/linux/buffer_head.h:346 [inline] recently_deleted fs/ext4/ialloc.c:684 [inline] find_inode_bit+0x213/0x520 fs/ext4/ialloc.c:724 __ext4_new_inode+0x160c/0x5a20 fs/ext4/ialloc.c:916 ext4_mkdir+0x396/0xe10 fs/ext4/namei.c:2696 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. vfs_mkdir+0x508/0x7a0 fs/namei.c:3819 do_mkdirat+0x262/0x2d0 fs/namei.c:3842 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f56c9fc7167 Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f56c891bf88 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f56c9fc7167 RDX: 0000000000000006 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f56c891c020 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 sit: Dst spoofed 0.0.0.0/2002::600:6300:6000 -> 0.0.0.0/2002:b000:2002:e000:0:300:8:0 R13: 0000000020000100 R14: 00007f56c891bfe0 R15: 0000000020012e00 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2311 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_is_held_type+0x188/0x210 kernel/locking/lockdep.c:3951 Code: 00 00 00 48 c1 e8 03 80 3c 10 00 75 63 48 83 3d 45 cc a6 08 00 74 2c 48 89 df 57 9d 0f 1f 44 00 00 48 83 c4 08 44 89 e0 5b 5d <41> 5c c3 48 83 c4 08 41 bc 01 00 00 00 5b 44 89 e0 5d 41 5c c3 0f RSP: 0018:ffff8880ba107be0 EFLAGS: 00000092 RAX: 0000000000000001 RBX: ffff888090c40500 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 00000000ffffffff RDI: 0000000000000086 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000001 R14: ffff8880ba12b0c0 R15: ffff8880b30dc4c0 FS: 00007fbf96c9f700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf9843d028 CR3: 0000000023329000 CR4: 00000000003426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: select_task_rq_fair+0x771/0x2750 kernel/sched/fair.c:6450 select_task_rq kernel/sched/core.c:1532 [inline] try_to_wake_up+0x4cd/0x1050 kernel/sched/core.c:2037 hrtimer_wakeup+0x43/0x60 kernel/time/hrtimer.c:1713 __run_hrtimer kernel/time/hrtimer.c:1465 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1527 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1724 [inline] RIP: 0010:vprintk_emit+0x668/0x740 kernel/printk/printk.c:1964 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 d9 00 00 00 48 83 3d 9c a2 a3 08 00 74 37 e8 7d a5 14 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 82 fe ff ff e8 69 a5 14 00 0f 0b e8 62 a5 14 00 RSP: 0018:ffff8880146af3b0 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 0000000000000212 RCX: ffffc90009a8f000 RDX: 0000000000007ca1 RSI: ffffffff814ddff3 RDI: 0000000000000212 RBP: ffff8880146af3f0 R08: ffffffff8cd265d0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000055 R13: 1ffffffff13e3051 R14: 0000000000000200 R15: 0000000000000001 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 packet_is_spoofed net/ipv6/sit.c:633 [inline] ipip6_rcv.cold+0x9e/0x167 net/ipv6/sit.c:661 tunnel64_rcv+0x10e/0x2c0 net/ipv4/tunnel4.c:121 ip_local_deliver_finish+0x495/0xc00 net/ipv4/ip_input.c:215 NF_HOOK include/linux/netfilter.h:289 [inline] ip_local_deliver+0x188/0x500 net/ipv4/ip_input.c:256 dst_input include/net/dst.h:461 [inline] ip_rcv_finish+0x1ca/0x2e0 net/ipv4/ip_input.c:414 NF_HOOK include/linux/netfilter.h:289 [inline] ip_rcv+0xca/0x3c0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 netif_receive_skb_internal+0xf0/0x3f0 net/core/dev.c:5156 tun_rx_batched.isra.0+0x472/0x740 drivers/net/tun.c:1543 tun_get_user+0x2ee5/0x5100 drivers/net/tun.c:1974 tun_chr_write_iter+0xdb/0x1d0 drivers/net/tun.c:2007 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fbf982dcb6f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 RSP: 002b:00007fbf96c9f130 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fbf9843cf60 RCX: 00007fbf982dcb6f RDX: 00000000000000be RSI: 0000000020000300 RDI: 00000000000000c8 RBP: 00007fbf9838408d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000000be R11: 0000000000000293 R12: 0000000000000000 R13: 00007fffc49c402f R14: 00007fbf96c9f300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 00 4c 39 e5 add %cl,-0x1b(%rcx,%rdi,1) 4: 72 55 jb 0x5b 6: e8 ee 26 37 00 callq 0x3726f9 b: 48 c7 c0 a9 c6 26 8b mov $0xffffffff8b26c6a9,%rax 12: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 19: fc ff df 1c: 48 89 c1 mov %rax,%rcx 1f: 83 e0 07 and $0x7,%eax 22: 48 c1 e9 03 shr $0x3,%rcx 26: 0f b6 14 11 movzbl (%rcx,%rdx,1),%edx * 2a: 38 c2 cmp %al,%dl <-- trapping instruction 2c: 7f 04 jg 0x32 2e: 84 d2 test %dl,%dl 30: 75 77 jne 0xa9 32: 0f b6 0d f9 67 fb 09 movzbl 0x9fb67f9(%rip),%ecx # 0x9fb6832 39: 4c 89 e3 mov %r12,%rbx 3c: 31 ff xor %edi,%edi 3e: 48 rex.W 3f: d3 .byte 0xd3