BUG: soft lockup in sys_getsockopt

Status: auto-obsoleted due to no activity on 2024/10/28 21:41
Reported-by: syzbot+bd3eed34710a5a5961b2@syzkaller.appspotmail.com
First crash: 829d, last: 730d
▶ ▼ Similar bugs (17)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: soft lockup in sys_getsockopt trace 1 1 2369d 2369d 0/29 auto-closed as invalid on 2020/05/04 01:54
android-5-10 BUG: soft lockup in sys_getsockopt 1 1 21d 21d 0/2 premoderation: reported on 2026/07/10 13:22
linux-5.15 BUG: soft lockup in sys_getsockopt 1 2 400d 422d 0/3 auto-obsoleted due to no activity on 2025/10/03 23:07
android-54 BUG: soft lockup in sys_getsockopt 1 1 835d 835d 0/2 auto-obsoleted due to no activity on 2024/07/15 21:19
linux-4.19 INFO: rcu detected stall in sys_getsockopt 1 1 1409d 1409d 0/1 auto-obsoleted due to no activity on 2023/01/19 05:52
upstream INFO: rcu detected stall in sys_getsockopt (11) netfilter 1 4 942d 955d 0/29 auto-obsoleted due to no activity on 2024/03/30 17:47
linux-5.15 INFO: rcu detected stall in sys_getsockopt 1 1 961d 961d 0/3 auto-obsoleted due to no activity on 2024/03/21 16:23
linux-5.15 INFO: rcu detected stall in sys_getsockopt (2) 1 2 613d 648d 0/3 auto-obsoleted due to no activity on 2025/03/05 03:25
linux-6.6 INFO: rcu detected stall in sys_getsockopt (2) 1 1 251d 251d 0/2 auto-obsoleted due to no activity on 2026/03/02 01:54
upstream INFO: rcu detected stall in sys_getsockopt (6) kvm 1 3 1814d 1881d 0/29 auto-closed as invalid on 2021/11/10 12:58
linux-6.6 INFO: rcu detected stall in sys_getsockopt 1 1 380d 380d 0/2 auto-obsoleted due to no activity on 2025/10/24 08:59
upstream INFO: rcu detected stall in sys_getsockopt (7) netfilter 1 2 1671d 1720d 0/29 closed as invalid on 2022/02/08 10:10
linux-6.1 INFO: rcu detected stall in sys_getsockopt 1 4 878d 1036d 0/3 auto-obsoleted due to no activity on 2024/06/12 17:46
upstream INFO: rcu detected stall in sys_getsockopt (10) mm 1 9 1073d 1155d 0/29 auto-obsoleted due to no activity on 2023/11/20 15:28
linux-6.1 INFO: rcu detected stall in sys_getsockopt (2) origin:lts-only 1 syz, C error 5 133d 497d 0/3 upstream: reported C repro on 2025/03/21 07:27
upstream INFO: rcu detected stall in sys_getsockopt (9) kernel 1 6 1277d 1433d 0/29 auto-obsoleted due to no activity on 2023/05/01 05:21
upstream INFO: rcu detected stall in sys_getsockopt (8) net 1 2 1561d 1577d 0/29 auto-closed as invalid on 2022/07/21 00:25

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz-executor:7262]
Modules linked in:
CPU: 0 PID: 7262 Comm: syz-executor Not tainted 5.15.151-syzkaller-00134-gd0a6506ecafd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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 2b 02 13 04 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:ffffc90000966920 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff9200012cd28 RCX: 1ffffffff0d5aa9c
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8881f7038ad4
RBP: ffffc900009669d0 R08: dffffc0000000000 R09: ffffed103ee0715b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7038ad4 R14: 0000000000000001 R15: 1ffff9200012cd2c
FS:  0000555555ab2500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555acd4a8 CR3: 000000010cd38000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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/0x44
 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:1880 [inline]
 bpf_trace_run4+0x13f/0x270 kernel/trace/bpf_trace.c:1919
 __bpf_trace_mm_page_alloc+0xbf/0xf0 include/trace/events/kmem.h:201
 trace_mm_page_alloc include/trace/events/kmem.h:201 [inline]
 __alloc_pages+0x3cb/0x8f0 mm/page_alloc.c:5799
 __vmalloc_area_node mm/vmalloc.c:2955 [inline]
 __vmalloc_node_range+0x482/0x8d0 mm/vmalloc.c:3086
 __vmalloc_node mm/vmalloc.c:3151 [inline]
 vzalloc+0x78/0x90 mm/vmalloc.c:3221
 alloc_counters+0x69/0x510 net/ipv4/netfilter/arp_tables.c:659
 copy_entries_to_user net/ipv4/netfilter/arp_tables.c:680 [inline]
 get_entries net/ipv4/netfilter/arp_tables.c:866 [inline]
 do_arpt_get_ctl+0xe58/0x1680 net/ipv4/netfilter/arp_tables.c:1452
 nf_getsockopt+0x26c/0x290 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x1434/0x1da0 net/ipv4/ip_sockglue.c:1787
 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: 0033:0x7f8a9afafffa
Code: ff c3 66 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb b8 0f 1f 44 00 00 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 a8 ff ff ff f7
RSP: 002b:00007fffbfc9d2f8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8a9afafffa
RDX: 0000000000000061 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fffbfc9d360 R08: 00007fffbfc9d30c R09: 00007fffbfc9d6f7
R10: 00007fffbfc9d360 R11: 0000000000000212 R12: 00007fffbfc9d30c
R13: 00000000000860e6 R14: 0000000000085fe9 R15: 00007fffbfc9da30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9376 Comm: syz.0.2596 Not tainted 5.15.151-syzkaller-00134-gd0a6506ecafd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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 2b 02 13 04 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:ffffc90000a164a0 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 1ffff92000142c98 RCX: ffffffff8155068f
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88811e2aff58
RBP: ffffc90000a16550 R08: dffffc0000000000 R09: ffffed1023c55fec
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88811e2aff58 R14: 0000000000000003 R15: 1ffff92000142c9c
FS:  00007f58f513f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d30bff8 CR3: 0000000116b23000 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_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508
 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/0x44
 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:1880 [inline]
 bpf_trace_run4+0x13f/0x270 kernel/trace/bpf_trace.c:1919
 __bpf_trace_mm_page_alloc+0xbf/0xf0 include/trace/events/kmem.h:201
 trace_mm_page_alloc include/trace/events/kmem.h:201 [inline]
 __alloc_pages+0x3cb/0x8f0 mm/page_alloc.c:5799
 __alloc_pages_node include/linux/gfp.h:591 [inline]
 alloc_pages_node include/linux/gfp.h:605 [inline]
 alloc_pages include/linux/gfp.h:618 [inline]
 __stack_depot_save+0x38d/0x470 lib/stackdepot.c:326
 stack_depot_save+0xe/0x10 lib/stackdepot.c:383
 save_stack+0x104/0x1e0 mm/page_owner.c:140
 __set_page_owner+0x28/0x2e0 mm/page_owner.c:200
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485
 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5777
 __alloc_pages_node include/linux/gfp.h:591 [inline]
 alloc_pages_node include/linux/gfp.h:605 [inline]
 alloc_pages include/linux/gfp.h:618 [inline]
 __stack_depot_save+0x38d/0x470 lib/stackdepot.c:326
 kasan_save_stack mm/kasan/common.c:39 [inline]
 kasan_set_track+0x5d/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
 slab_free mm/slub.c:3519 [inline]
 kfree+0xc8/0x220 mm/slub.c:4579
 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/0x44
 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:1880 [inline]
 bpf_trace_run4+0x13f/0x270 kernel/trace/bpf_trace.c:1919
 __bpf_trace_mm_page_alloc+0xbf/0xf0 include/trace/events/kmem.h:201
 trace_mm_page_alloc include/trace/events/kmem.h:201 [inline]
 __alloc_pages+0x3cb/0x8f0 mm/page_alloc.c:5799
 __alloc_pages_node include/linux/gfp.h:591 [inline]
 alloc_pages_node include/linux/gfp.h:605 [inline]
 alloc_pages include/linux/gfp.h:618 [inline]
 kmalloc_order+0x4a/0x160 mm/slab_common.c:975
 kmalloc_order_trace+0x1a/0xb0 mm/slab_common.c:994
 kmalloc_large include/linux/slab.h:532 [inline]
 __kmalloc_track_caller+0x19b/0x260 mm/slub.c:4938
 kmalloc_reserve net/core/skbuff.c:357 [inline]
 pskb_expand_head+0x113/0x1240 net/core/skbuff.c:1727
 __skb_grow include/linux/skbuff.h:2892 [inline]
 tun_napi_alloc_frags drivers/net/tun.c:1462 [inline]
 tun_get_user+0x13b3/0x3aa0 drivers/net/tun.c:1815
 tun_chr_write_iter+0x1e1/0x2e0 drivers/net/tun.c:2019
 call_write_iter include/linux/fs.h:2204 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0xd5d/0x1110 fs/read_write.c:594
 ksys_write+0x199/0x2c0 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
 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: 0033:0x7f58f64bf3b9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f58f513f048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f58f664df80 RCX: 00007f58f64bf3b9
RDX: 000000000000fdef RSI: 0000000020000380 RDI: 0000000000000005
RBP: 00007f58f652c8e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f58f664df80 R15: 00007ffde63d4548
 </TASK>

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/07/30 21:37 android13-5.15-lts d0a6506ecafd 6fde257d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in sys_getsockopt
2024/07/27 00:13 android13-5.15-lts 4edafe6c0231 46eb10b7 .config console log report info ci2-android-5-15-perf BUG: soft lockup in sys_getsockopt
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.