syzbot


BUG: soft lockup in sys_getsockopt

Status: premoderation: reported on 2024/04/23 07:54
Reported-by: syzbot+bd3eed34710a5a5961b2@syzkaller.appspotmail.com
First crash: 54d, last: 48d
Similar bugs (10)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: soft lockup in sys_getsockopt trace 1 1595d 1595d 0/27 auto-closed as invalid on 2020/05/04 01:54
linux-4.19 INFO: rcu detected stall in sys_getsockopt 1 634d 634d 0/1 auto-obsoleted due to no activity on 2023/01/19 05:52
upstream INFO: rcu detected stall in sys_getsockopt (11) netfilter 4 168d 180d 0/27 auto-obsoleted due to no activity on 2024/03/30 17:47
linux-5.15 INFO: rcu detected stall in sys_getsockopt 1 187d 187d 0/3 auto-obsoleted due to no activity on 2024/03/21 16:23
upstream INFO: rcu detected stall in sys_getsockopt (6) kvm 3 1039d 1107d 0/27 auto-closed as invalid on 2021/11/10 12:58
upstream INFO: rcu detected stall in sys_getsockopt (7) netfilter 2 896d 946d 0/27 closed as invalid on 2022/02/08 10:10
linux-6.1 INFO: rcu detected stall in sys_getsockopt 4 104d 262d 0/3 auto-obsoleted due to no activity on 2024/06/12 17:46
upstream INFO: rcu detected stall in sys_getsockopt (10) mm 9 299d 381d 0/27 auto-obsoleted due to no activity on 2023/11/20 15:28
upstream INFO: rcu detected stall in sys_getsockopt (9) kernel 6 502d 658d 0/27 auto-obsoleted due to no activity on 2023/05/01 05:21
upstream INFO: rcu detected stall in sys_getsockopt (8) net 2 787d 802d 0/27 auto-closed as invalid on 2022/07/21 00:25

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz-executor.4:8305]
Modules linked in:
CPU: 0 PID: 8305 Comm: syz-executor.4 Tainted: G        W         5.15.149-syzkaller-00490-g5d96939590c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x5ba/0xc40 kernel/locking/qspinlock.c:508
Code: 00 00 49 89 dc c6 03 00 48 8b 44 24 10 0f b6 04 10 84 c0 0f 85 48 01 00 00 48 8b 44 24 08 c6 00 01 bb 00 80 ff ff eb 06 f3 90 <ff> c3 74 5e 41 0f b6 44 15 00 84 c0 75 36 41 80 3f 00 75 ea 4c 89
RSP: 0018:ffffc900091568c0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00000000ffffb4d8 RCX: ffffffff8154fa7f
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881051872a8
RBP: ffffc900091569b0 R08: dffffc0000000000 R09: ffffed1020a30e56
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7037ed4
R13: 1ffff11020a30e55 R14: 1ffff1103ee00001 R15: ffff8881051872a8
FS:  000055555743c480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdcd59efe8 CR3: 000000016475c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 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/0xe30
 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
 sk_psock_free_link include/linux/skmsg.h:420 [inline]
 sock_map_del_link net/core/sock_map.c:160 [inline]
 sock_map_unref+0x352/0x4d0 net/core/sock_map.c:182
 sock_hash_delete_elem+0x274/0x2f0 net/core/sock_map.c:941
 bpf_prog_2c29ac5cdc6b1842+0x3a/0xe30
 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
 kvfree+0x35/0x40 mm/util.c:664
 __vunmap+0x850/0x8f0 mm/vmalloc.c:2657
 __vfree mm/vmalloc.c:2700 [inline]
 vfree+0x7f/0xb0 mm/vmalloc.c:2731
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:884 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
 do_ip6t_get_ctl+0x11da/0x1890 net/ipv6/netfilter/ip6_tables.c:1671
 nf_getsockopt+0x26c/0x290 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x1de6/0x3050 net/ipv6/ipv6_sockglue.c:1489
 tcp_getsockopt+0x257/0x7150 net/ipv4/tcp.c:4298
 sock_common_getsockopt+0x99/0xb0 net/core/sock.c:3421
 __sys_getsockopt+0x290/0x4f0 net/socket.c:2242
 __do_sys_getsockopt net/socket.c:2257 [inline]
 __se_sys_getsockopt net/socket.c:2254 [inline]
 __x64_sys_getsockopt+0xbf/0xd0 net/socket.c:2254
 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: 0033:0x7fabfdd9fa4a
Code: c4 c1 e0 1a 0d 00 00 04 00 89 01 e9 e0 fe ff ff e8 3b 05 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 b0 ff ff ff f7
RSP: 002b:00007ffdcd5a0198 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffdcd5a0220 RCX: 00007fabfdd9fa4a
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffdcd5a01bc R09: 0079746972756365
R10: 00007ffdcd5a0220 R11: 0000000000000212 R12: 00007fabfde9b8c0
R13: 00007ffdcd5a01bc R14: 0000000000000000 R15: 00007fabfde9cd00
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13635 Comm: kworker/1:9 Tainted: G        W         5.15.149-syzkaller-00490-g5d96939590c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events binder_deferred_func
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:ffffc900014ef7e0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff9200029df00 RCX: 1ffffffff0d1aa9c
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8881f7137ed4
RBP: ffffc900014ef890 R08: dffffc0000000000 R09: ffffed103ee26fdb
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7137ed4 R14: 0000000000000001 R15: 1ffff9200029df04
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31022000 CR3: 000000010e22e000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <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/0xe30
 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
 binder_free_proc drivers/android/binder.c:5074 [inline]
 binder_proc_dec_tmpref+0x438/0x660 drivers/android/binder.c:1643
 binder_deferred_release drivers/android/binder.c:6054 [inline]
 binder_deferred_func+0x18a7/0x1bc0 drivers/android/binder.c:6081
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/29 05:01 android13-5.15-lts 5d96939590c0 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_getsockopt
2024/04/28 14:25 android13-5.15-lts 5d96939590c0 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_getsockopt
2024/04/25 19:28 android13-5.15-lts 5d96939590c0 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_getsockopt
2024/04/23 07:53 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_getsockopt
* Struck through repros no longer work on HEAD.