syzbot


BUG: soft lockup in sys_recvmsg

Status: premoderation: reported on 2024/04/19 20:25
Reported-by: syzbot+2c29ef844f2f75bacb75@syzkaller.appspotmail.com
First crash: 54d, last: 39d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 BUG: soft lockup in sys_recvmsg 8 19d 78d 0/2 premoderation: reported on 2024/03/26 18:58

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.4:11829]
Modules linked in:
CPU: 0 PID: 11829 Comm: syz-executor.4 Tainted: G        W         5.10.210-syzkaller-00394-g70b6ab09a34b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:rht_bucket include/linux/rhashtable.h:290 [inline]
RIP: 0010:__rhashtable_lookup include/linux/rhashtable.h:597 [inline]
RIP: 0010:rhashtable_lookup include/linux/rhashtable.h:638 [inline]
RIP: 0010:tipc_sk_lookup+0x22a/0x650 net/tipc/socket.c:2997
Code: 0f b6 04 20 84 c0 0f 85 73 02 00 00 41 21 de 45 8b 3f 31 ff 44 89 fe e8 b4 a1 d2 fc 45 85 ff 0f 85 fa 01 00 00 e8 f6 9d d2 fc <44> 89 f0 48 8b 4c 24 20 48 8d 5c c1 40 4c 8b 7c 24 18 48 89 d8 48
RSP: 0018:ffffc90000ca6200 EFLAGS: 00000293
RAX: ffffffff84980c0a RBX: 00000000000000ff RCX: ffff88813b2c13c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000ca62f0 R08: ffffffff84980bfc R09: 0000000000000003
R10: fffff52000194c50 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000194c50 R14: 0000000000000057 R15: 0000000000000000
FS:  00007f9afe5d86c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003280 CR3: 0000000127d7e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 tipc_sk_rcv+0x499/0x1e30 net/tipc/socket.c:2488
 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754
 tipc_sk_rcv+0x177d/0x1e30 net/tipc/socket.c:2497
 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674
 tipc_sk_push_backlog+0x4da/0x7b0 net/tipc/socket.c:1306
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1358 [inline]
 tipc_sk_proto_rcv+0xaa9/0x1db0 net/tipc/socket.c:2156
 tipc_sk_filter_rcv+0x3603/0x3e00 net/tipc/socket.c:2350
 tipc_sk_enqueue net/tipc/socket.c:2442 [inline]
 tipc_sk_rcv+0x8a1/0x1e30 net/tipc/socket.c:2493
 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674
 tipc_node_xmit_skb net/tipc/node.c:1739 [inline]
 tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754
 tipc_sk_backlog_rcv+0x18b/0x210 net/tipc/socket.c:2410
 sk_backlog_rcv include/net/sock.h:1050 [inline]
 __release_sock+0x148/0x410 net/core/sock.c:2571
 release_sock+0x65/0x1b0 net/core/sock.c:3122
 tipc_wait_for_rcvmsg+0x311/0x630 net/tipc/socket.c:1849
 tipc_recvstream+0x292/0xf70 net/tipc/socket.c:2040
 ____sys_recvmsg+0x286/0x530
 ___sys_recvmsg+0x1ec/0x690 net/socket.c:2637
 __sys_recvmsg net/socket.c:2667 [inline]
 __do_sys_recvmsg net/socket.c:2677 [inline]
 __se_sys_recvmsg net/socket.c:2674 [inline]
 __x64_sys_recvmsg+0x1ee/0x2c0 net/socket.c:2674
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f9aff8e8ca9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9afe5d80c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f9affa172c0 RCX: 00007f9aff8e8ca9
RDX: 0000000000000000 RSI: 0000000020000900 RDI: 0000000000000047
RBP: 00007f9aff93447e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9affa172c0 R15: 00007fff763dcff8
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11826 Comm: syz-executor.4 Tainted: G        W         5.10.210-syzkaller-00394-g70b6ab09a34b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 65 4e d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d 56 4e d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04
RSP: 0018:ffffc90000e6f680 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 1ffff920001cded4 RCX: ffffffff8150b5a4
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90000e6f6c0
RBP: ffffc90000e6f730 R08: dffffc0000000000 R09: ffffed102170ca92
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88810b865488 R14: 0000000000000003 R15: 0000000000000246
FS:  00007f9afe63b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9afe5d8d58 CR3: 0000000127d7e000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:183 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x92/0x300 net/core/sock.c:3105
 lock_sock include/net/sock.h:1640 [inline]
 tipc_sendstream+0x47/0x70 net/tipc/socket.c:1540
 sock_sendmsg_nosec net/socket.c:652 [inline]
 __sock_sendmsg net/socket.c:664 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2376
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2430
 __sys_sendmsg net/socket.c:2459 [inline]
 __do_sys_sendmsg net/socket.c:2468 [inline]
 __se_sys_sendmsg+0x1b1/0x280 net/socket.c:2466
 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2466
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f9aff8e8ca9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9afe63b0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f9affa17050 RCX: 00007f9aff8e8ca9
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000048
RBP: 00007f9aff93447e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9affa17050 R15: 00007fff763dcff8

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/05 13:26 android13-5.10-lts 70b6ab09a34b 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: soft lockup in sys_recvmsg
2024/04/22 17:54 android13-5.10-lts 8d3bb9cb3b7d 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: soft lockup in sys_recvmsg
2024/04/19 20:25 android13-5.10-lts 1d535cec0cb4 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: soft lockup in sys_recvmsg
* Struck through repros no longer work on HEAD.