BUG: unable to handle kernel paging request in dst_release (2)

Status: closed as invalid on 2019/10/04 04:23
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+f7b46bf869b6ace2ea45@syzkaller.appspotmail.com
First crash: 2703d, last: 2624d
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
Reminder: 10 open syzbot bugs in "net/sctp" subsystem 1 (1) 2019/07/24 02:27
Reminder: 14 open syzbot bugs in "net/sctp" subsystem 1 (1) 2019/06/25 05:49
BUG: unable to handle kernel paging request in dst_release (2) 0 (1) 2019/03/26 09:06
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: null-ptr-deref Write in dst_release (2) net 21 syz error 148 1711d 1961d 0/29 closed as invalid on 2021/12/14 20:12
upstream BUG: unable to handle kernel paging request in dst_release net 8 113 3135d 3141d 4/29 fixed on 2018/01/22 13:19

Sample crash report:
BUG: unable to handle kernel paging request at ffffffffffff94f8
#PF error: [WRITE]
PGD 8874067 P4D 8874067 PUD 8876067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 28652 Comm: syz-executor.1 Not tainted 5.0.0+ #136
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:167 [inline]
RIP: 0010:arch_atomic_sub_return arch/x86/include/asm/atomic.h:179 [inline]
RIP: 0010:atomic_sub_return include/asm-generic/atomic-instrumented.h:160 [inline]
RIP: 0010:atomic_dec_return include/linux/atomic-fallback.h:455 [inline]
RIP: 0010:dst_release net/core/dst.c:190 [inline]
RIP: 0010:dst_release+0x2f/0xb0 net/core/dst.c:185
Code: 55 41 54 49 89 fc 53 e8 1f b6 f3 fb 4d 85 e4 74 47 e8 15 b6 f3 fb 49 8d 7c 24 40 be 04 00 00 00 e8 d6 8b 2b fc be ff ff ff ff <f0> 41 0f c1 74 24 40 44 8d 6e ff 31 ff 44 89 ee e8 6c b7 f3 fb 45
RSP: 0018:ffff8880ae906f28 EFLAGS: 00010246
RAX: fffffbfffffff2a0 RBX: 0000000000000001 RCX: ffffffff857cae2a
RDX: 0000000000000001 RSI: 00000000ffffffff RDI: ffffffffffff94f8
RBP: ffff8880ae906f40 R08: 1ffffffffffff29f R09: fffffbfffffff2a0
R10: fffffbfffffff29f R11: ffffffffffff94fb R12: ffffffffffff94b8
R13: dffffc0000000000 R14: ffff888066d0ac80 R15: 0000000000000000
FS:  00007f7ae094d700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffff94f8 CR3: 0000000086472000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 sctp_v6_get_dst+0x12a9/0x1d80 net/sctp/ipv6.c:325
 sctp_transport_route+0x132/0x370 net/sctp/transport.c:312
 sctp_assoc_add_peer+0x53e/0xfc0 net/sctp/associola.c:678
 sctp_process_param net/sctp/sm_make_chunk.c:2548 [inline]
 sctp_process_init+0x249f/0x2b20 net/sctp/sm_make_chunk.c:2361
 sctp_sf_do_5_1B_init+0x8ba/0xe50 net/sctp/sm_statefuns.c:416
 sctp_do_sm+0x124/0x53e0 net/sctp/sm_sideeffect.c:1188
 sctp_endpoint_bh_rcv+0x451/0x950 net/sctp/endpointola.c:458
 sctp_inq_push+0x1ea/0x290 net/sctp/inqueue.c:95
 sctp_rcv+0x2818/0x3570 net/sctp/input.c:271
 sctp6_rcv+0x17/0x30 net/sctp/ipv6.c:1063
 ip6_protocol_deliver_rcu+0x303/0x16c0 net/ipv6/ip6_input.c:394
 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:434
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:443
 dst_input include/net/dst.h:450 [inline]
 ip6_rcv_finish+0x1e7/0x320 net/ipv6/ip6_input.c:76
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:272
 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4973
 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083
 process_backlog+0x206/0x750 net/core/dev.c:5923
 napi_poll net/core/dev.c:6346 [inline]
 net_rx_action+0x4fa/0x1070 net/core/dev.c:6412
 __do_softirq+0x266/0x95a kernel/softirq.c:293
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1027
 </IRQ>
 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:338
 do_softirq kernel/softirq.c:330 [inline]
 __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:190
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:684 [inline]
 ip6_finish_output2+0xbcf/0x2550 net/ipv6/ip6_output.c:121
 ip6_finish_output+0x577/0xc30 net/ipv6/ip6_output.c:154
 NF_HOOK_COND include/linux/netfilter.h:278 [inline]
 ip6_output+0x235/0x7f0 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip6_xmit+0xe41/0x20c0 net/ipv6/ip6_output.c:275
 sctp_v6_xmit+0x313/0x660 net/sctp/ipv6.c:232
 sctp_packet_transmit+0x1bc4/0x36f0 net/sctp/output.c:641
 sctp_packet_singleton net/sctp/outqueue.c:787 [inline]
 sctp_outq_flush_ctrl.constprop.0+0x6d4/0xd50 net/sctp/outqueue.c:918
 sctp_outq_flush+0xe8/0x2780 net/sctp/outqueue.c:1200
 sctp_outq_uncork+0x6c/0x80 net/sctp/outqueue.c:772
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1820 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline]
 sctp_do_sm+0x559/0x53e0 net/sctp/sm_sideeffect.c:1191
 sctp_primitive_ASSOCIATE+0x9d/0xd0 net/sctp/primitive.c:88
 __sctp_connect+0x8cd/0xce0 net/sctp/socket.c:1226
 __sctp_setsockopt_connectx+0x133/0x1a0 net/sctp/socket.c:1349
 sctp_setsockopt_connectx_old net/sctp/socket.c:1365 [inline]
 sctp_setsockopt net/sctp/socket.c:4656 [inline]
 sctp_setsockopt+0x22cc/0x6d20 net/sctp/socket.c:4620
 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3120
 __sys_setsockopt+0x180/0x280 net/socket.c:2046
 __do_sys_setsockopt net/socket.c:2057 [inline]
 __se_sys_setsockopt net/socket.c:2054 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:2054
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458209
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7ae094cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000458209
RDX: 000000000000006b RSI: 0000000000000084 RDI: 0000000000000004
RBP: 000000000073bfa0 R08: 000000000000001c R09: 0000000000000000
R10: 000000002055bfe4 R11: 0000000000000246 R12: 00007f7ae094d6d4
R13: 00000000004ccd38 R14: 00000000004daae0 R15: 00000000ffffffff
Modules linked in:
CR2: ffffffffffff94f8
---[ end trace 7497212cb89709a4 ]---
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:167 [inline]
RIP: 0010:arch_atomic_sub_return arch/x86/include/asm/atomic.h:179 [inline]
RIP: 0010:atomic_sub_return include/asm-generic/atomic-instrumented.h:160 [inline]
RIP: 0010:atomic_dec_return include/linux/atomic-fallback.h:455 [inline]
RIP: 0010:dst_release net/core/dst.c:190 [inline]
RIP: 0010:dst_release+0x2f/0xb0 net/core/dst.c:185
Code: 55 41 54 49 89 fc 53 e8 1f b6 f3 fb 4d 85 e4 74 47 e8 15 b6 f3 fb 49 8d 7c 24 40 be 04 00 00 00 e8 d6 8b 2b fc be ff ff ff ff <f0> 41 0f c1 74 24 40 44 8d 6e ff 31 ff 44 89 ee e8 6c b7 f3 fb 45
RSP: 0018:ffff8880ae906f28 EFLAGS: 00010246
RAX: fffffbfffffff2a0 RBX: 0000000000000001 RCX: ffffffff857cae2a
RDX: 0000000000000001 RSI: 00000000ffffffff RDI: ffffffffffff94f8
RBP: ffff8880ae906f40 R08: 1ffffffffffff29f R09: fffffbfffffff2a0
R10: fffffbfffffff29f R11: ffffffffffff94fb R12: ffffffffffff94b8
R13: dffffc0000000000 R14: ffff888066d0ac80 R15: 0000000000000000
FS:  00007f7ae094d700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffff94f8 CR3: 0000000086472000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/03/25 16:26 net-old 526949e877f4 2c86e0a5 .config console log report ci-upstream-net-this-kasan-gce
2019/06/12 07:40 net-next-old 758a0a4d60ab ea2f4006 .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.