KASAN: null-ptr-deref Write in dst

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: null-ptr-deref Write in dst_release (2)	syz	error	148	534d	784d	0/24	closed as invalid on 2021/12/14 20:12
upstream	KASAN: null-ptr-deref Write in dst_release			27	1441d	1603d	0/24	auto-closed as invalid on 2019/10/25 08:50
upstream	KASAN: user-memory-access Write in dst_release			18	1445d	1603d	0/24	auto-closed as invalid on 2019/10/25 08:49

================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:101 [inline] BUG: KASAN: null-ptr-deref in atomic_dec_return include/linux/atomic/atomic-instrumented.h:251 [inline] BUG: KASAN: null-ptr-deref in dst_release net/core/dst.c:172 [inline] BUG: KASAN: null-ptr-deref in dst_release+0x26/0xe0 net/core/dst.c:167 Write of size 4 at addr 0000000000000240 by task syz-executor.3/25939 CPU: 1 PID: 25939 Comm: syz-executor.3 Not tainted 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __kasan_report mm/kasan/report.c:437 [inline] kasan_report.cold+0x66/0xdf mm/kasan/report.c:450 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_dec_return include/linux/atomic/atomic-instrumented.h:251 [inline] dst_release net/core/dst.c:172 [inline] dst_release+0x26/0xe0 net/core/dst.c:167 dst_cache_destroy net/core/dst_cache.c:160 [inline] dst_cache_destroy+0xcb/0x190 net/core/dst_cache.c:152 ipip6_dev_free net/ipv6/sit.c:1414 [inline] sit_init_net+0x7d8/0xaa0 net/ipv6/sit.c:1936 ops_init+0xaf/0x470 net/core/net_namespace.c:140 setup_net+0x40f/0xa30 net/core/net_namespace.c:326 copy_net_ns+0x318/0x760 net/core/net_namespace.c:470 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x920 kernel/fork.c:3075 __do_sys_unshare kernel/fork.c:3146 [inline] __se_sys_unshare kernel/fork.c:3144 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3144 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f0931baae99 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0930520168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f0931cbdf60 RCX: 00007f0931baae99 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000060000000 RBP: 00007f0931c04ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f09321f1b1f R14: 00007f0930520300 R15: 0000000000022000 </TASK> ==================================================================

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets	Manager	Title
2021/12/16 07:15	upstream	2b14864acbaa	572bcb40	.config	console log	report			info		ci-upstream-kasan-gce	KASAN: null-ptr-deref Write in dst_release
2021/12/16 14:25	net-old	ef8a0f6eab1c	8dd6a5e3	.config	console log	report			info		ci-upstream-net-this-kasan-gce	KASAN: user-memory-access Write in dst_release

Crashes (2):