syzbot


BUG: soft lockup in sys_socket

Status: upstream: reported C repro on 2024/04/10 16:23
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+cf71edbddb0657f4f402@syzkaller.appspotmail.com
First crash: 41d, last: 8d10h
Bug presence (2)
Date Name Commit Repro Result
2024/04/10 lts (merge base) 6139f2a02fe0 C [report] BUG: soft lockup in sys_openat
2024/04/10 upstream (ToT) 2c71fdf02a95 C Didn't crash
Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_socket (4) fs 1 1116d 1116d 0/26 auto-closed as invalid on 2021/07/27 17:27
linux-5.15 INFO: rcu detected stall in sys_socket 1 228d 228d 0/3 auto-obsoleted due to no activity on 2024/01/11 06:48
upstream INFO: rcu detected stall in sys_socket (5) net 2 953d 979d 0/26 auto-closed as invalid on 2022/01/06 01:08
linux-4.19 INFO: rcu detected stall in sys_socket 1 757d 757d 0/1 auto-closed as invalid on 2022/08/20 07:08
upstream INFO: rcu detected stall in sys_socket (10) fs C done 13 2d14h 170d 0/26 upstream: reported C repro on 2023/11/30 15:24
upstream INFO: rcu detected stall in sys_socket (6) cgroups mm 2 612d 657d 0/26 auto-obsoleted due to no activity on 2022/12/12 22:48
upstream INFO: rcu detected stall in sys_socket (7) kernel 2 472d 504d 0/26 auto-obsoleted due to no activity on 2023/05/02 14:50
upstream INFO: rcu detected stall in sys_socket (9) kasan mm 2 289d 299d 0/26 closed as invalid on 2023/09/07 14:25
linux-5.15 INFO: rcu detected stall in sys_socket (2) origin:upstream C 2 2d14h 77d 0/3 upstream: reported C repro on 2024/03/02 17:55

Sample crash report:
RBP: 0000000000000002 R08: 0000000000000000 R09: 558c3bb38f67aff7
R10: 0000000000000008 R11: 0000000000000202 R12: 00007f500dcb9bc0
R13: 00007f500ddbb212 R14: 00007fff8e914fb8 R15: 0000000000000000
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [init:634]
Modules linked in:
CPU: 0 PID: 634 Comm: init Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:918
Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 5b 03 f3 03 fb f4 <e9> 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c
RSP: 0018:ffffc900000a7500 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff92000014ea4 RCX: 1ffffffff0d1aa9c
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8881f7037ed4
RBP: ffffc900000a75b0 R08: dffffc0000000000 R09: ffffed103ee06fdb
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7037ed4 R14: 0000000000000001 R15: 1ffff92000014ea8
FS:  00007f500dacb380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005652d14baa58 CR3: 000000010b915000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline]
 __pv_queued_spin_lock_slowpath+0x41b/0xc40 kernel/locking/qspinlock.c:473
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [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:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178
 sock_hash_delete_elem+0xb1/0x2f0 net/core/sock_map.c:937
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x604
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920
 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1f3/0x220 mm/slub.c:4569
 context_destroy security/selinux/ss/context.h:177 [inline]
 security_compute_sid+0x1d7d/0x1f40 security/selinux/ss/services.c:1913
 security_transition_sid+0x7d/0x90 security/selinux/ss/services.c:1936
 socket_sockcreate_sid security/selinux/hooks.c:4650 [inline]
 selinux_socket_create+0x204/0x330 security/selinux/hooks.c:4684
 security_socket_create+0x77/0xb0 security/security.c:2185
 __sock_create+0xd6/0x760 net/socket.c:1441
 sock_create net/socket.c:1537 [inline]
 __sys_socket+0x132/0x370 net/socket.c:1579
 __do_sys_socket net/socket.c:1588 [inline]
 __se_sys_socket net/socket.c:1586 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1586
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f500dc2dbd7
Code: 73 01 c3 48 8b 0d 51 c2 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 21 c2 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007fff8e914e88 EFLAGS: 00000202
 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f500dc2dbd7
RDX: 0000000000000000 RSI: 0000000000080002 RDI: 0000000000000001
RBP: 0000000000000002 R08: 0000000000000000 R09: 558c3bb38f67aff7
R10: 0000000000000008 R11: 0000000000000202 R12: 00007f500dcb9bc0
R13: 00007f500ddbb212 R14: 00007fff8e914fb8 R15: 0000000000000000
 </TASK>

Crashes (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/24 11:05 android13-5.15-lts ad06eaf051cd 21339d7b .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/10 16:21 android13-5.15-lts 993bed180178 4320ec32 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/05/10 11:27 android13-5.15-lts 5d96939590c0 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/05/08 05:34 android13-5.15-lts 5d96939590c0 4cf3f9b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/05/06 20:34 android13-5.15-lts 5d96939590c0 d884b519 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/05/06 03:38 android13-5.15-lts 5d96939590c0 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/24 06:38 android13-5.15-lts ad06eaf051cd 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/20 21:48 android13-5.15-lts ad06eaf051cd af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/19 16:46 android13-5.15-lts ad06eaf051cd af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/19 04:48 android13-5.15-lts ad06eaf051cd af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/16 19:04 android13-5.15-lts ad06eaf051cd 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/16 06:37 android13-5.15-lts ad06eaf051cd 0d592ce4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/14 02:55 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/12 23:11 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
2024/04/07 12:45 android13-5.15-lts 993bed180178 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_socket
* Struck through repros no longer work on HEAD.