general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 6926 Comm: syz-executor112 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:compound_head include/linux/page-flags.h:182 [inline] RIP: 0010:put_page include/linux/mm.h:1170 [inline] RIP: 0010:__skb_frag_unref include/linux/skbuff.h:3014 [inline] RIP: 0010:skb_release_data+0x185/0x890 net/core/skbuff.c:604 Code: 00 00 00 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 4a bd 46 fb 4d 8b 26 49 8d 7c 24 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 2f bd 46 fb 49 8b 5c 24 08 48 89 de 48 83 RSP: 0018:ffffc90000007b68 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff8880a70fc580 RDX: ffff8880a70fc580 RSI: 0000000000000003 RDI: 0000000000000008 RBP: ffff8880a204a0c2 R08: ffffffff866e0482 R09: fffffbfff131e2e6 R10: fffffbfff131e2e6 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff8880a204a0f0 R15: 0000000000000001 FS: 00000000022a6880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9070474020 CR3: 00000000a776c000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_release_all net/core/skbuff.c:664 [inline] __kfree_skb+0x56/0x1c0 net/core/skbuff.c:678 validate_xmit_skb+0x732/0xe10 net/core/dev.c:3654 __dev_queue_xmit+0x1897/0x2940 net/core/dev.c:4128 garp_queue_xmit net/802/garp.c:259 [inline] garp_join_timer+0xa8/0x130 net/802/garp.c:410 call_timer_fn+0x91/0x160 kernel/time/timer.c:1413 expire_timers kernel/time/timer.c:1458 [inline] __run_timers+0x65e/0x830 kernel/time/timer.c:1755 run_timer_softirq+0x46/0x80 kernel/time/timer.c:1768 __do_softirq+0x256/0x6d5 kernel/softirq.c:298 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x91/0xe0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu+0x21f/0x230 kernel/softirq.c:423 irq_exit_rcu+0x5/0x20 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0xd5/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline] RIP: 0010:console_unlock+0xa60/0xe20 kernel/printk/printk.c:2509 Code: 8b 44 24 48 42 80 3c 20 00 74 0c 48 c7 c7 b8 17 4d 89 e8 73 8c 56 00 48 83 3d 13 e2 ee 07 00 0f 84 9c 03 00 00 48 89 df 57 9d <0f> 1f 44 00 00 f6 44 24 0f 01 74 24 e8 cf c7 16 00 48 c7 c7 ff d1 RSP: 0018:ffffc90001717150 EFLAGS: 00000286 RAX: 1ffffffff129a2f7 RBX: 0000000000000286 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffffc90001717220 R08: dffffc0000000000 R09: fffffbfff167da99 R10: fffffbfff167da99 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff896f8070 vprintk_emit+0x205/0x370 kernel/printk/printk.c:2029 printk+0x62/0x83 kernel/printk/printk.c:2078 __dev_set_promiscuity+0x1db/0x600 net/core/dev.c:8076 __dev_change_flags+0x3fe/0x650 net/core/dev.c:8294 rtnl_configure_link+0x17b/0x340 net/core/rtnetlink.c:3123 __rtnl_newlink net/core/rtnetlink.c:3460 [inline] rtnl_newlink+0x15a7/0x1c10 net/core/rtnetlink.c:3500 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5563 netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2470 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x786/0x940 net/netlink/af_netlink.c:1330 netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg net/socket.c:671 [inline] ____sys_sendmsg+0x519/0x800 net/socket.c:2353 ___sys_sendmsg net/socket.c:2407 [inline] __sys_sendmsg+0x2b1/0x360 net/socket.c:2440 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x441929 Code: e8 5c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffe5bd299a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441929 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007ffe5bd299b0 R08: 0000000100000000 R09: 0000000100000000 R10: 0000000100000000 R11: 0000000000000246 R12: 000000000000b53f R13: 0000000000402800 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 90b785fc08692361 ]--- RIP: 0010:compound_head include/linux/page-flags.h:182 [inline] RIP: 0010:put_page include/linux/mm.h:1170 [inline] RIP: 0010:__skb_frag_unref include/linux/skbuff.h:3014 [inline] RIP: 0010:skb_release_data+0x185/0x890 net/core/skbuff.c:604 Code: 00 00 00 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 4a bd 46 fb 4d 8b 26 49 8d 7c 24 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 2f bd 46 fb 49 8b 5c 24 08 48 89 de 48 83 RSP: 0018:ffffc90000007b68 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff8880a70fc580 RDX: ffff8880a70fc580 RSI: 0000000000000003 RDI: 0000000000000008 RBP: ffff8880a204a0c2 R08: ffffffff866e0482 R09: fffffbfff131e2e6 R10: fffffbfff131e2e6 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff8880a204a0f0 R15: 0000000000000001 FS: 00000000022a6880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9070474020 CR3: 00000000a776c000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400