general protection fault in dst_dev

general protection fault in dst_dev_put (6)
Status: upstream: reported on 2020/12/30 19:36
Reported-by: syzbot+0f1d7ae54b1e86cb1b67@syzkaller.appspotmail.com
First crash: 109d, last: 5d03h

similar bugs (5):
Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in dst_dev_put (2)	C	done	442	666d	855d	13/22	fixed on 2019/07/10 21:40
upstream	general protection fault in dst_dev_put (5)			4	201d	226d	0/22	auto-closed as invalid on 2020/12/25 06:24
upstream	general protection fault in dst_dev_put (4)			1	346d	346d	0/22	closed as invalid on 2020/05/28 16:43
upstream	general protection fault in dst_dev_put (3)			1	547d	547d	0/22	auto-closed as invalid on 2020/01/14 01:13
upstream	general protection fault in dst_dev_put			1	1217d	1213d	0/22	closed as invalid on 2018/02/13 19:55

Sample crash report:

general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f]
CPU: 1 PID: 9692 Comm: kworker/1:6 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events linkwatch_event
RIP: 0010:dst_dev_put+0x22/0x190 net/core/dst.c:156
Code: 00 00 00 00 0f 1f 40 00 41 57 41 56 41 55 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 45 6e eb f9 4d 89 fd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 4c 89 ff e8 ee 54 2f fa 4d 8b 37 49 8d 7f
RSP: 0018:ffffc90000dc0d60 EFLAGS: 00010206
RAX: ffffffff878daa6b RBX: 0000000000000079 RCX: ffff888028169c40
RDX: 0000000000000101 RSI: 0000000000000000 RDI: 0000000000000079
RBP: 0000000000000000 R08: ffffffff881e8c84 R09: ffffffff83f492db
R10: 0000000000000009 R11: ffff888028169c40 R12: dffffc0000000000
R13: 000000000000000f R14: 0000607f46046500 R15: 0000000000000079
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0f0f305e0 CR3: 000000008f0b2000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rt_fibinfo_free_cpus+0xe1/0x1b0 net/ipv4/fib_semantics.c:202
 fib_nh_common_release+0xee/0x2c0 net/ipv4/fib_semantics.c:215
 fib6_info_destroy_rcu+0xcb/0x1c0 net/ipv6/ip6_fib.c:174
 rcu_do_batch kernel/rcu/tree.c:2559 [inline]
 rcu_core+0x858/0x1360 kernel/rcu/tree.c:2794
 __do_softirq+0x318/0x714 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu+0x1d8/0x200 kernel/softirq.c:422
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:console_unlock+0xaab/0xe00 kernel/printk/printk.c:2586
Code: 84 5a f7 ff ff eb 29 e8 c3 66 18 00 e8 ce 62 f1 07 4d 85 f6 74 df 66 0f 1f 84 00 00 00 00 00 e8 ab 66 18 00 fb f6 44 24 0f 01 <0f> 84 2f f7 ff ff e8 9a 66 18 00 48 c7 c7 24 8f 70 8b be 1b 0a 00
RSP: 0018:ffffc90016447880 EFLAGS: 00000246
RAX: ffffffff8160b205 RBX: 0000000000000000 RCX: ffff888028169c40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90016447998 R08: ffffffff8160b1c2 R09: fffffbfff1f270b1
R10: fffffbfff1f270b1 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffffffff19f2109 R14: 0000000000000200 R15: 1ffffffff19f2102
 vprintk_emit+0x1ab/0x270 kernel/printk/printk.c:2098
 printk+0x62/0x83 kernel/printk/printk.c:2146
 addrconf_notify+0x1c13/0x1f50 net/ipv6/addrconf.c:3571
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2075 [inline]
 netdev_state_change+0x141/0x1e0 net/core/dev.c:1466
 linkwatch_do_dev+0x10a/0x160 net/core/link_watch.c:167
 __linkwatch_run_queue+0x451/0x760 net/core/link_watch.c:212
 linkwatch_event+0x48/0x50 net/core/link_watch.c:251
 process_one_work+0x789/0xfd0 kernel/workqueue.c:2275
 worker_thread+0xac1/0x1300 kernel/workqueue.c:2421
 kthread+0x39a/0x3c0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace fe2a8049e2ef5a68 ]---
RIP: 0010:dst_dev_put+0x22/0x190 net/core/dst.c:156
Code: 00 00 00 00 0f 1f 40 00 41 57 41 56 41 55 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 45 6e eb f9 4d 89 fd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 4c 89 ff e8 ee 54 2f fa 4d 8b 37 49 8d 7f
RSP: 0018:ffffc90000dc0d60 EFLAGS: 00010206
RAX: ffffffff878daa6b RBX: 0000000000000079 RCX: ffff888028169c40
RDX: 0000000000000101 RSI: 0000000000000000 RDI: 0000000000000079
RBP: 0000000000000000 R08: ffffffff881e8c84 R09: ffffffff83f492db
R10: 0000000000000009 R11: ffff888028169c40 R12: dffffc0000000000
R13: 000000000000000f R14: 0000607f46046500 R15: 0000000000000079
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0f0f305e0 CR3: 000000008f0b2000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (8):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-upstream-kasan-gce-smack-root	2021/04/02 15:34	upstream	1678e493	6a81331a	.config	log	report	info	general protection fault in dst_dev_put
ci-upstream-kasan-gce-smack-root	2021/02/15 00:51	upstream	358fecee	98682e5e	.config	log	report	info	general protection fault in dst_dev_put
ci-upstream-bpf-kasan-gce	2021/04/10 04:57	bpf	afd0be72	6a81331a	.config	log	report	info	general protection fault in dst_dev_put
ci-upstream-bpf-kasan-gce	2021/03/27 12:49	bpf	861de02e	a8529b82	.config	log	report	info	general protection fault in dst_dev_put
ci-upstream-bpf-next-kasan-gce	2021/02/18 15:50	bpf-next	7b1e385c	14052202	.config	log	report	info	general protection fault in dst_dev_put
ci-upstream-bpf-next-kasan-gce	2021/02/07 03:07	bpf-next	23a2d70c	0655e081	.config	log	report	info	general protection fault in dst_dev_put
ci-upstream-linux-next-kasan-gce-root	2021/01/22 21:07	linux-next	bc085f8f	4080af96	.config	log	report	info	general protection fault in dst_dev_put
ci-upstream-kasan-gce-selinux-root	2020/12/26 14:06	upstream	40f78232	821e0b09	.config	log	report	info