ci2 starts bisection 2024-09-06 17:48:00.606598862 +0000 UTC m=+9394.270454439
bisecting fixing commit since ad06eaf051cd0bdfd330f378c91f537107ce938e
building syzkaller on 21339d7b9986698282dce93709157dc36907fbf8
ensuring issue is reproducible on original commit ad06eaf051cd0bdfd330f378c91f537107ce938e

testing commit ad06eaf051cd0bdfd330f378c91f537107ce938e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 526f481630f8890c843f2a6a19587b4eb26aabc052d9c14d49a35c4ee1c3e6d5
run #0: crashed: BUG: soft lockup in bpf_map_free_deferred
run #1: crashed: BUG: soft lockup in rcu_core_si
run #2: crashed: BUG: soft lockup in ipv6_rcv
run #3: crashed: BUG: soft lockup in inet_release
run #4: crashed: BUG: soft lockup in inet_release
run #5: crashed: BUG: soft lockup in sys_syslog
run #6: crashed: BUG: soft lockup in inet_release
run #7: crashed: BUG: soft lockup in sys_syslog
run #8: crashed: BUG: soft lockup in inet_release
run #9: crashed: BUG: soft lockup in inet_release
run #10: crashed: BUG: soft lockup in sys_syslog
run #11: crashed: BUG: soft lockup in inet_release
run #12: crashed: BUG: soft lockup in inet_release
run #13: crashed: BUG: soft lockup in srcu_invoke_callbacks
run #14: crashed: BUG: soft lockup in inet_release
run #15: crashed: BUG: soft lockup in bpf_map_free_deferred
run #16: crashed: BUG: soft lockup in kernfs_fop_read_iter
run #17: crashed: BUG: soft lockup in rcu_core_si
run #18: crashed: BUG: soft lockup in inet_release
run #19: crashed: no output from test machine
representative crash: BUG: soft lockup in bpf_map_free_deferred, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit ad06eaf051cd0bdfd330f378c91f537107ce938e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1b22daac4f8b8d9ce07a166e998c5a4a45f6f2e9f34af5600979927c697adc2f
run #0: crashed: BUG: soft lockup in bpf_map_free_deferred
run #1: crashed: BUG: soft lockup in ipv6_rcv
run #2: crashed: BUG: soft lockup in rcu_core_si
run #3: crashed: BUG: soft lockup in ipv6_rcv
run #4: crashed: BUG: soft lockup in inet_release
run #5: crashed: BUG: soft lockup in inet_release
run #6: crashed: BUG: soft lockup in inet_release
run #7: crashed: BUG: soft lockup in inet_release
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: soft lockup in bpf_map_free_deferred, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
kconfig minimization: base=4920 full=6159 leaves diff=242
split chunks (needed=false): <242>
split chunk #0 of len 242 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit ad06eaf051cd0bdfd330f378c91f537107ce938e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8e7acd02e6448a103a402a19595001ac6a3582dfff132059e0a0865a08de0072
run #0: crashed: BUG: soft lockup in inet_release
run #1: crashed: BUG: soft lockup in bpf_prog_free_deferred
run #2: crashed: BUG: soft lockup in inet_release
run #3: crashed: BUG: soft lockup in ipv6_rcv
run #4: crashed: BUG: soft lockup in sys_syslog
run #5: crashed: BUG: soft lockup in sk_psock_destroy
run #6: crashed: BUG: soft lockup in kauditd_thread
run #7: crashed: BUG: soft lockup in inet_release
run #8: crashed: BUG: soft lockup in sys_syslog
run #9: crashed: BUG: soft lockup in inet_release
representative crash: BUG: soft lockup in inet_release, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit ad06eaf051cd0bdfd330f378c91f537107ce938e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0a92a494de7c8faf75a943623082ed295b88cab7bd9019f3c2d15254ce23d2df
run #0: crashed: BUG: soft lockup in kauditd_thread
run #1: crashed: BUG: soft lockup in inet_release
run #2: crashed: BUG: soft lockup in kauditd_thread
run #3: crashed: BUG: soft lockup in inet_release
run #4: crashed: BUG: soft lockup in rcu_core_si
run #5: crashed: BUG: soft lockup in rcu_core_si
run #6: crashed: BUG: soft lockup in sock_read_iter
run #7: crashed: BUG: soft lockup in ipv6_rcv
run #8: crashed: BUG: soft lockup in bpf_prog_free_deferred
run #9: crashed: BUG: soft lockup in inet_release
representative crash: BUG: soft lockup in kauditd_thread, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit ad06eaf051cd0bdfd330f378c91f537107ce938e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5ae688612802bc992da6f58948d56aa1f0e8351841b755ac61ba9795350639ca
run #0: crashed: BUG: soft lockup in inet_release
run #1: crashed: BUG: soft lockup in inet_release
run #2: crashed: BUG: soft lockup in ipv6_rcv
run #3: crashed: BUG: soft lockup in bpf_map_free_deferred
run #4: crashed: BUG: soft lockup in inet_release
run #5: crashed: BUG: soft lockup in sock_read_iter
run #6: crashed: BUG: soft lockup in net_rx_action
run #7: crashed: BUG: soft lockup in bpf_prog_free_deferred
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
representative crash: BUG: soft lockup in inet_release, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit ad06eaf051cd0bdfd330f378c91f537107ce938e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6517446a5abbcb41895c7a754559b4bb540276c825f69139f7d0ab73e4690db3
run #0: crashed: BUG: soft lockup in rcu_core_si
run #1: crashed: BUG: soft lockup in sys_openat
run #2: crashed: BUG: soft lockup in inet_release
run #3: crashed: BUG: soft lockup in rcu_core_si
run #4: crashed: BUG: soft lockup in inet_release
run #5: crashed: BUG: soft lockup in inet_release
run #6: crashed: BUG: soft lockup in rcu_core_si
run #7: crashed: BUG: soft lockup in bpf_prog_free_deferred
run #8: crashed: BUG: soft lockup in sys_syslog
run #9: crashed: BUG: soft lockup in ipv6_rcv
representative crash: BUG: soft lockup in rcu_core_si, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit ad06eaf051cd0bdfd330f378c91f537107ce938e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
failed building ad06eaf051cd0bdfd330f378c91f537107ce938e: net/socket.c:1191: undefined reference to `wext_handle_ioctl'
net/socket.c:3385: undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:343: undefined reference to `wext_proc_exit'
net/core/net-procfs.c:327: undefined reference to `wext_proc_init'
minimized to 46 configs; suspects: [HID_ZEROPLUS USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL USB_SERIAL_FTDI_SIO USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_ZYDAS X86_X32 ZEROPLUS_FF]
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD 53be7c8abe115da0ea109a44829b46385e9a2240
testing commit 53be7c8abe115da0ea109a44829b46385e9a2240 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 63f2b98f4595d40a79ccd95d2952aa88c1cc1d1212265d1535988670f5f056a3
run #0: crashed: BUG: soft lockup in ipv6_rcv
run #1: crashed: BUG: soft lockup in x64_sys_call
run #2: crashed: BUG: soft lockup in inet_release
run #3: crashed: BUG: soft lockup in inet_release
run #4: crashed: BUG: soft lockup in inet_release
run #5: crashed: BUG: soft lockup in rcu_core_si
run #6: crashed: BUG: soft lockup in inet_release
run #7: crashed: BUG: soft lockup in inet_release
run #8: crashed: BUG: soft lockup in kauditd_thread
run #9: crashed: BUG: soft lockup in inet_release
representative crash: BUG: soft lockup in ipv6_rcv, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h35m42.137118691s (build: 27m57.650509614s, test: 1h5m45.876781694s)
crash still not fixed or there were kernel test errors
commit msg: ANDROID: usb: dwc3: Fix gadget mis-merge from upstream
crash: BUG: soft lockup in ipv6_rcv
watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [kworker/0:1:20]
Modules linked in:
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.157-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: mld mld_ifc_work
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:90 [inline]
RIP: 0010:kvm_wait arch/x86/kernel/kvm.c:918 [inline]
RIP: 0010:kvm_wait+0x3e/0x40 arch/x86/kernel/kvm.c:900
Code: 0b fa 0f b6 07 40 38 f0 74 15 fb c3 0f b6 07 40 38 c6 75 f7 66 90 0f 00 2d 6d f3 34 01 f4 c3 66 90 0f 00 2d 62 f3 34 01 fb f4 <c3> 90 8b 05 fa 20 d7 01 83 f8 ff 74 06 85 c0 0f 95 c0 c3 55 48 89
RSP: 0018:ffffc90000003a78 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff888237c2cb00 RCX: 0000000000000008
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888112c59ae8
RBP: ffffc90000003ab8 R08: ffff88823fff0680 R09: 0000000000000000
R10: 0000000000000001 R11: ffff888237c2cb00 R12: ffff888112c59ae8
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000100
FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005607b2508cc8 CR3: 000000010bc1a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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+0x39/0x40 kernel/locking/spinlock.c:178
 sock_hash_delete_elem+0x5f/0x120 net/core/sock_map.c:943
 bpf_prog_2c29ac5cdc6b1842+0x3a/0xfc4
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0x37/0x90 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x9/0x10 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1ff/0x2a0 mm/slub.c:4569
 sk_psock_free_link include/linux/skmsg.h:420 [inline]
 sock_map_del_link+0x111/0x1c0 net/core/sock_map.c:160
 sock_map_unref+0x2f/0x70 net/core/sock_map.c:182
 sock_hash_delete_elem+0xd4/0x120 net/core/sock_map.c:947
 bpf_prog_2c29ac5cdc6b1842+0x3a/0xfc4
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0x37/0x90 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x9/0x10 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1ff/0x2a0 mm/slub.c:4569
 skb_free_head+0x64/0x80 net/core/skbuff.c:656
 skb_release_data+0x12a/0x140 net/core/skbuff.c:678
 skb_release_all net/core/skbuff.c:743 [inline]
 __kfree_skb net/core/skbuff.c:757 [inline]
 kfree_skb_reason.part.0+0x31/0xe0 net/core/skbuff.c:778
 kfree_skb_reason+0x19/0x50 include/linux/refcount.h:279
 kfree_skb+0xb/0x10 net/core/skbuff.c:792
 ip6_mc_input+0xd6/0xe0 net/ipv6/ip6_input.c:572
 dst_input include/net/dst.h:454 [inline]
 ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline]
 ip6_rcv_finish net/ipv6/ip6_input.c:69 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ipv6_rcv+0xd2/0xe0 net/ipv6/ip6_input.c:300
 __netif_receive_skb_one_core+0x51/0x70 net/core/dev.c:5492
 __netif_receive_skb+0x10/0x50 net/core/dev.c:5606
 process_backlog+0xa6/0x150 net/core/dev.c:6483
 __napi_poll+0x24/0x160 net/core/dev.c:7042
 napi_poll net/core/dev.c:7109 [inline]
 net_rx_action+0xdb/0x220 net/core/dev.c:7199
 __do_softirq+0xff/0x2fc kernel/softirq.c:565
 do_softirq kernel/softirq.c:452 [inline]
 do_softirq+0x6f/0x90 kernel/softirq.c:439
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x5a/0x60 kernel/softirq.c:379
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:818 [inline]
 ip6_finish_output2+0x1d3/0x5d0 net/ipv6/ip6_output.c:127
 __ip6_finish_output.part.0+0x9a/0x1f0 net/ipv6/ip6_output.c:197
 __ip6_finish_output net/ipv6/ip6_output.c:212 [inline]
 ip6_finish_output+0xa7/0x100 net/ipv6/ip6_output.c:207
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x6b/0x130 net/ipv6/ip6_output.c:230
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 mld_sendpack+0x21e/0x2d0 net/ipv6/mcast.c:1820
 mld_send_cr net/ipv6/mcast.c:2121 [inline]
 mld_ifc_work+0x18f/0x470 net/ipv6/mcast.c:2653
 process_one_work+0x199/0x340 kernel/workqueue.c:2325
 worker_thread+0x4e/0x340 kernel/workqueue.c:2472
 kthread+0x13a/0x160 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 364 Comm: syz-executor.0 Not tainted 5.15.157-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:90 [inline]
RIP: 0010:kvm_wait arch/x86/kernel/kvm.c:918 [inline]
RIP: 0010:kvm_wait+0x3e/0x40 arch/x86/kernel/kvm.c:900
Code: 0b fa 0f b6 07 40 38 f0 74 15 fb c3 0f b6 07 40 38 c6 75 f7 66 90 0f 00 2d 6d f3 34 01 f4 c3 66 90 0f 00 2d 62 f3 34 01 fb f4 <c3> 90 8b 05 fa 20 d7 01 83 f8 ff 74 06 85 c0 0f 95 c0 c3 55 48 89
RSP: 0018:ffffc900003ebd08 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff888237d2cb00 RCX: 0000000000000008
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888112af4290
RBP: ffffc900003ebd48 R08: ffff88823fff0540 R09: 0000000000000000
R10: 0000000000000001 R11: ffff888237d2cb00 R12: ffff888112af4290
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000100
FS:  0000555555d7d480(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6fe54170c0 CR3: 000000010e025000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <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+0x39/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:368 [inline]
 sk_psock_link_pop+0x1b/0x80 net/core/skmsg.c:753
 sock_map_remove_links+0x22/0x150 net/core/sock_map.c:1510
 sock_map_close+0xab/0x120 net/core/sock_map.c:1552
 inet_release+0x3d/0x80 net/ipv4/af_inet.c:434
 __sock_release+0x37/0xa0 net/socket.c:649
 sock_close+0x10/0x20 net/socket.c:1336
 __fput+0xd5/0x260 fs/file_table.c:280
 ____fput+0x9/0x10 fs/file_table.c:308
 task_work_run+0x5c/0x90 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:181 [inline]
 exit_to_user_mode_prepare+0x143/0x150 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x21/0x40 kernel/entry/common.c:307
 do_syscall_64+0x40/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6fe52ebd9a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007ffcd6c41280 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f6fe52ebd9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f6fe541c980 R08: 00007f6fe526f000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000293 R12: 000000000000d6ce
R13: 000000000000d4a8 R14: 00007ffcd6c41440 R15: 00007f6fe52a3cb0
 </TASK>