BUG: soft lockup in inet6_sendmsg

Status: auto-closed as invalid on 2019/10/25 14:12
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+4f7a9664a6ad9deae88f@syzkaller.appspotmail.com
First crash: 2576d, last: 2567d
▶ ▼ Duplicate bugs (1)
Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
INFO: rcu detected stall in inet6_sendmsg net 1 4 2530d 2559d 0/29 closed as dup on 2019/08/22 13:46
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
BUG: soft lockup in inet6_sendmsg 0 (1) 2019/07/30 15:14

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.0:9745]
Modules linked in:
irq event stamp: 0
hardirqs last  enabled at (0): [<0000000000000000>] 0x0
hardirqs last disabled at (0): [<ffffffff8142b8a5>] copy_process+0x1815/0x6b00 kernel/fork.c:1968
softirqs last  enabled at (0): [<ffffffff8142b94c>] copy_process+0x18bc/0x6b00 kernel/fork.c:1971
softirqs last disabled at (0): [<0000000000000000>] 0x0
CPU: 0 PID: 9745 Comm: syz-executor.0 Not tainted 5.3.0-rc2-next-20190802 #58
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:656 [inline]
RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:84 [inline]
RIP: 0010:native_queued_spin_lock_slowpath+0x132/0x9f0 kernel/locking/qspinlock.c:325
Code: 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 37 07 00 00 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 90 <e9> 73 ff ff ff 8b 45 98 4c 8d 65 d8 3d 00 01 00 00 0f 84 e5 00 00
RSP: 0018:ffff88805bab77e0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffff8880a820cd48 RCX: ffffffff8158f457
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a820cd48
RBP: ffff88805bab78a0 R08: 1ffff110150419a9 R09: ffffed10150419aa
R10: ffffed10150419a9 R11: ffff8880a820cd4b R12: 0000000000000001
R13: 0000000000000003 R14: ffffed10150419a9 R15: 0000000000000001
FS:  00007f381e48f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000758080 CR3: 0000000095ebb000 CR4: 00000000001406f0
Call Trace:
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:642 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:50 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:81 [inline]
 do_raw_spin_lock+0x20e/0x2e0 kernel/locking/spinlock_debug.c:113
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x3b/0x50 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:343 [inline]
 lock_sock_nested+0x41/0x120 net/core/sock.c:2917
 lock_sock include/net/sock.h:1522 [inline]
 sk_stream_wait_memory+0x83f/0xfc0 net/core/stream.c:149
 tls_sw_sendmsg+0x673/0x17b0 net/tls/tls_sw.c:1054
 inet6_sendmsg+0x9e/0xe0 net/ipv6/af_inet6.c:576
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:657
 __sys_sendto+0x262/0x380 net/socket.c:1952
 __do_sys_sendto net/socket.c:1964 [inline]
 __se_sys_sendto net/socket.c:1960 [inline]
 __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1960
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f381e48ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459829
RDX: ffffffffffffff7f RSI: 00000000200005c0 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f381e48f6d4
R13: 00000000004c77d9 R14: 00000000004dcf90 R15: 00000000ffffffff
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.3.0-rc2-next-20190802 #58
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__kasan_check_read+0xc/0x20 mm/kasan/common.c:92
Code: 27 ee ff ff 48 8b 73 58 89 c2 48 c7 c7 a0 c2 89 88 f7 da e8 0a bc ae ff e9 da ee ff ff 90 55 89 f6 31 d2 48 89 e5 48 8b 4d 08 <e8> cf 26 00 00 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 89
RSP: 0018:ffff8880a990f060 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880a820cd48 RCX: ffffffff8158f457
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a820cd48
RBP: ffff8880a990f060 R08: 1ffff110150419a9 R09: ffffed10150419aa
R10: ffffed10150419a9 R11: ffff8880a820cd4b R12: 0000000000000001
R13: 0000000000000003 R14: ffffed10150419a9 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000070f158 CR3: 0000000095ebb000 CR4: 00000000001406e0
Call Trace:
 atomic_read include/asm-generic/atomic-instrumented.h:26 [inline]
 virt_spin_lock arch/x86/include/asm/qspinlock.h:83 [inline]
 native_queued_spin_lock_slowpath+0xb7/0x9f0 kernel/locking/qspinlock.c:325
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:642 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:50 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:81 [inline]
 do_raw_spin_lock+0x20e/0x2e0 kernel/locking/spinlock_debug.c:113
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x3b/0x50 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:343 [inline]
 release_sock+0x20/0x1c0 net/core/sock.c:2932
 wait_on_pending_writer+0x20f/0x420 net/tls/tls_main.c:91
 tls_sk_proto_cleanup+0x2c5/0x3e0 net/tls/tls_main.c:295
 tls_sk_proto_unhash+0x90/0x3f0 net/tls/tls_main.c:330
 tcp_set_state+0x5b9/0x7d0 net/ipv4/tcp.c:2235
 tcp_done+0xe2/0x320 net/ipv4/tcp.c:3824
 tcp_reset+0x132/0x500 net/ipv4/tcp_input.c:4123
 tcp_validate_incoming+0xa2d/0x1660 net/ipv4/tcp_input.c:5483
 tcp_rcv_established+0x6b5/0x1e70 net/ipv4/tcp_input.c:5691
 tcp_v6_do_rcv+0x41e/0x12c0 net/ipv6/tcp_ipv6.c:1371
 tcp_v6_rcv+0x31f1/0x3500 net/ipv6/tcp_ipv6.c:1603
 ip6_protocol_deliver_rcu+0x2fe/0x1660 net/ipv6/ip6_input.c:397
 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:438
 NF_HOOK include/linux/netfilter.h:305 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:447
 dst_input include/net/dst.h:442 [inline]
 ip6_rcv_finish+0x1de/0x2f0 net/ipv6/ip6_input.c:76
 NF_HOOK include/linux/netfilter.h:305 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:272
 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:4999
 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5113
 process_backlog+0x206/0x750 net/core/dev.c:5924
 napi_poll net/core/dev.c:6347 [inline]
 net_rx_action+0x508/0x10c0 net/core/dev.c:6413
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:603 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595
 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/04 10:56 linux-next 7b4980e0bcf4 6affd8e8 .config console log report ci-upstream-linux-next-kasan-gce-root
2019/07/28 15:27 linux-next fde50b96be82 c85e1c5b .config console log report ci-upstream-linux-next-kasan-gce-root
2019/07/27 03:44 linux-next fde50b96be82 c85e1c5b .config console log report ci-upstream-linux-next-kasan-gce-root
2019/07/26 12:23 linux-next fde50b96be82 3e5d1beb .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.