ci2 starts bisection 2025-06-06 17:06:49.4090788 +0000 UTC m=+27852.815158254 bisecting fixing commit since ba8b8b19339409d005e0b71075309daf1bbbcbb6 building syzkaller on 53a8b9bd23a6fac52f298fb6115c012757f0a505 ensuring issue is reproducible on original commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 testing commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 932c98dc66d68e772bb4d165f14dddab6796b5f0b942c46f2afd9eb60e4a896a run #0: crashed: BUG: soft lockup in sys_recvmsg run #1: crashed: BUG: soft lockup in sys_recvmsg run #2: crashed: BUG: soft lockup in sys_recvmsg run #3: crashed: BUG: soft lockup in sys_sendmsg run #4: crashed: BUG: soft lockup in sys_recvmsg run #5: crashed: BUG: soft lockup in sys_sendmsg run #6: crashed: BUG: soft lockup in sys_recvmsg run #7: crashed: BUG: soft lockup in sys_recvmsg run #8: crashed: BUG: soft lockup in sys_sendmsg run #9: crashed: BUG: soft lockup in sys_recvmsg run #10: crashed: BUG: soft lockup in sys_recvmsg run #11: crashed: BUG: soft lockup in sys_sendmsg run #12: crashed: BUG: soft lockup in sys_recvmsg run #13: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor596823281" "root@10.128.15.203:./syz-executor596823281"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.15.203, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.15.203 [10.128.15.203] port 22. debug1: connect to address 10.128.15.203 port 22: Connection timed out ssh: connect to host 10.128.15.203 port 22: Connection timed out scp: Connection closed run #14: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3035065787" "root@10.128.1.8:./syz-executor3035065787"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.8, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.8 [10.128.1.8] port 22. debug1: connect to address 10.128.1.8 port 22: Connection timed out ssh: connect to host 10.128.1.8 port 22: Connection timed out scp: Connection closed run #15: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor273936613" "root@10.128.15.195:./syz-executor273936613"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.15.195, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.15.195 [10.128.15.195] port 22. debug1: connect to address 10.128.15.195 port 22: Connection timed out ssh: connect to host 10.128.15.195 port 22: Connection timed out scp: Connection closed run #16: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor660467096" "root@10.128.15.206:./syz-executor660467096"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.15.206, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.15.206 [10.128.15.206] port 22. debug1: connect to address 10.128.15.206 port 22: Connection timed out ssh: connect to host 10.128.15.206 port 22: Connection timed out scp: Connection closed run #17: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3835453227" "root@10.128.1.145:./syz-executor3835453227"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.145, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.145 [10.128.1.145] port 22. debug1: connect to address 10.128.1.145 port 22: Connection timed out ssh: connect to host 10.128.1.145 port 22: Connection timed out scp: Connection closed run #18: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1805031548" "root@10.128.10.57:./syz-executor1805031548"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.57, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.57 [10.128.10.57] port 22. debug1: connect to address 10.128.10.57 port 22: Connection timed out ssh: connect to host 10.128.10.57 port 22: Connection timed out scp: Connection closed run #19: crashed: BUG: soft lockup in sys_recvmsg representative crash: BUG: soft lockup in sys_recvmsg, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8ccc4fdf728efc86e96f2691c760211521f9231e84c676f42cc28d3e4e539493 run #0: crashed: BUG: soft lockup in sys_sendmsg run #1: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor586575736" "root@10.128.1.175:./syz-executor586575736"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.175, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.175 [10.128.1.175] port 22. debug1: connect to address 10.128.1.175 port 22: Connection timed out ssh: connect to host 10.128.1.175 port 22: Connection timed out scp: Connection closed run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: BUG: soft lockup in sys_sendmsg, types: [HANG] unable to determine the verdict: 8 good runs (wanted 5), for bad wanted 5 in total, got 9 kconfig minimization: base=4788 full=6021 leaves diff=248 split chunks (needed=false): <248> split chunk #0 of len 248 into 5 parts testing without sub-chunk 1/5 testing commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2860508dfc6e8b672985d97ec1575d8693562ce1f185339b0507f9f0d8b517b0 run #0: crashed: BUG: soft lockup in sys_recvmsg run #1: crashed: BUG: soft lockup in sys_sendmsg run #2: crashed: BUG: soft lockup in sys_recvmsg run #3: crashed: BUG: soft lockup in sys_sendmsg run #4: crashed: BUG: soft lockup in sys_recvmsg run #5: crashed: BUG: soft lockup in sys_recvmsg run #6: crashed: BUG: soft lockup in sys_recvmsg run #7: crashed: BUG: soft lockup in sys_recvmsg run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3496129096" "root@10.128.10.54:./syz-executor3496129096"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.54, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.54 [10.128.10.54] port 22. debug1: connect to address 10.128.10.54 port 22: Connection timed out ssh: connect to host 10.128.10.54 port 22: Connection timed out scp: Connection closed run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2905038650" "root@10.128.0.108:./syz-executor2905038650"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.108, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.108 [10.128.0.108] port 22. debug1: connect to address 10.128.0.108 port 22: Connection timed out ssh: connect to host 10.128.0.108 port 22: Connection timed out scp: Connection closed representative crash: BUG: soft lockup in sys_recvmsg, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 testing commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d529ce020214b2851b3453d93002b6d1b4fa4e8fed49474a32949eabc5ac4449 run #0: crashed: BUG: soft lockup in sys_sendmsg run #1: crashed: BUG: soft lockup in sys_sendmsg run #2: crashed: BUG: soft lockup in sys_sendmsg run #3: crashed: BUG: soft lockup in sys_sendmsg run #4: crashed: BUG: soft lockup in sys_sendmsg run #5: crashed: BUG: soft lockup in sys_recvmsg run #6: crashed: BUG: soft lockup in sys_sendmsg run #7: crashed: BUG: soft lockup in sys_recvmsg run #8: crashed: BUG: soft lockup in sys_sendmsg run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2902006165" "root@10.128.1.93:./syz-executor2902006165"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.93, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.93 [10.128.1.93] port 22. debug1: connect to address 10.128.1.93 port 22: Connection timed out ssh: connect to host 10.128.1.93 port 22: Connection timed out scp: Connection closed representative crash: BUG: soft lockup in sys_sendmsg, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 19adbe72207b03632ead49c934a5587e6d9bf2382f9de2e6319bc3a4e6bc65c1 run #0: crashed: BUG: soft lockup in sys_sendmsg run #1: crashed: BUG: soft lockup in sys_recvmsg run #2: crashed: BUG: soft lockup in sys_recvmsg run #3: crashed: BUG: soft lockup in sys_sendmsg run #4: crashed: BUG: soft lockup in sys_sendmsg run #5: crashed: BUG: soft lockup in sys_sendmsg run #6: crashed: BUG: soft lockup in sys_sendmsg run #7: crashed: BUG: soft lockup in sys_recvmsg run #8: crashed: BUG: soft lockup in sys_recvmsg run #9: crashed: BUG: soft lockup in sys_recvmsg representative crash: BUG: soft lockup in sys_sendmsg, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 testing commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3054265fcff1e226137d77602396cfb040cede328da68a686777710187e057c0 run #0: crashed: BUG: soft lockup in sys_recvmsg run #1: crashed: BUG: soft lockup in sys_recvmsg run #2: crashed: BUG: soft lockup in sys_recvmsg run #3: crashed: BUG: soft lockup in sys_recvmsg run #4: crashed: BUG: soft lockup in sys_sendmsg run #5: crashed: BUG: soft lockup in sys_sendmsg run #6: crashed: BUG: soft lockup in sys_sendmsg run #7: crashed: BUG: soft lockup in sys_sendmsg run #8: crashed: BUG: soft lockup in sys_sendmsg run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3828192679" "root@10.128.10.50:./syz-executor3828192679"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.50, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.50 [10.128.10.50] port 22. debug1: connect to address 10.128.10.50 port 22: Connection timed out ssh: connect to host 10.128.10.50 port 22: Connection timed out scp: Connection closed representative crash: BUG: soft lockup in sys_recvmsg, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 testing commit ba8b8b19339409d005e0b71075309daf1bbbcbb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building ba8b8b19339409d005e0b71075309daf1bbbcbb6: net/socket.c:1128: undefined reference to `wext_handle_ioctl' net/socket.c:3397: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346: undefined reference to `wext_proc_exit' net/core/net-procfs.c:330: undefined reference to `wext_proc_init' minimized to 48 configs; suspects: [HID_ZEROPLUS USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_DM9601 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 USB_XHCI_PCI_RENESAS 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 ZEROPLUS_FF] testing current HEAD d76d4cd0623a12e7a5512e26fee809feb445b26b testing commit d76d4cd0623a12e7a5512e26fee809feb445b26b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c86560204e8805d54ccafb63cc86e1bdbc59ef33ce37bc63cf8dd6e5d4b60e15 run #0: crashed: BUG: soft lockup in sys_recvmsg run #1: crashed: BUG: soft lockup in sys_recvmsg run #2: crashed: BUG: soft lockup in sys_sendmsg run #3: crashed: BUG: soft lockup in sys_sendmsg run #4: crashed: BUG: soft lockup in sys_sendmsg run #5: crashed: BUG: soft lockup in sys_recvmsg run #6: crashed: BUG: soft lockup in sys_recvmsg run #7: crashed: BUG: soft lockup in sys_recvmsg run #8: crashed: BUG: soft lockup in sys_recvmsg run #9: crashed: BUG: soft lockup in sys_recvmsg representative crash: BUG: soft lockup in sys_recvmsg, types: [HANG] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h38m56.153562379s (build: 23m24.913394806s, test: 1h14m7.495680788s) crash still not fixed or there were kernel test errors commit msg: Revert "ipv6: save dontfrag in cork" crash: BUG: soft lockup in sys_recvmsg watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.2.29:586] Modules linked in: CPU: 0 PID: 586 Comm: syz.2.29 Not tainted 5.10.238-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0x0/0x17 Code: 45 d0 eb b0 cc cc 55 48 89 e5 51 52 56 57 41 50 41 51 41 52 41 53 e8 db 16 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 5d c3 90 <55> 48 89 e5 52 b8 01 00 00 00 31 d2 f0 0f b0 17 3c 01 75 03 5a 5d RSP: 0018:ffffc90000f56c00 EFLAGS: 00000282 RAX: 1ffffffff0a234cf RBX: ffffc90000f56f14 RCX: ffffc90000f56f00 RDX: dffffc0000000000 RSI: 00000000a12bb6cb RDI: ffffc90000f56f14 RBP: ffffc90000f56c10 R08: 0000000000000001 R09: 0000000000000003 R10: fffff520001ead77 R11: 0000000000000000 R12: ffffc90000f56f00 R13: 00000000a12bb6cb R14: 0000000000000001 R15: dffffc0000000000 FS: 00007fdf2a5fc6c0(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdf2a5fbf98 CR3: 0000000115c72000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_bh include/linux/spinlock.h:399 [inline] tipc_skb_peek_port net/tipc/msg.h:1258 [inline] tipc_sk_rcv+0x23b/0x18f0 net/tipc/socket.c:2487 tipc_node_xmit+0x1b4/0x1810 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x34c/0x690 net/tipc/node.c:1754 tipc_sk_rcv+0x8cc/0x18f0 net/tipc/socket.c:2497 tipc_node_xmit+0x1b4/0x1810 net/tipc/node.c:1674 tipc_sk_push_backlog+0x2c8/0x770 net/tipc/socket.c:1306 tipc_sk_conn_proto_rcv net/tipc/socket.c:1358 [inline] tipc_sk_proto_rcv net/tipc/socket.c:2156 [inline] tipc_sk_filter_rcv+0x2285/0x3030 net/tipc/socket.c:2350 tipc_sk_enqueue net/tipc/socket.c:2442 [inline] tipc_sk_rcv+0xadc/0x18f0 net/tipc/socket.c:2493 tipc_node_xmit+0x1b4/0x1810 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x34c/0x690 net/tipc/node.c:1754 tipc_sk_backlog_rcv+0x162/0x1d0 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1052 [inline] __release_sock+0x14f/0x2b0 net/core/sock.c:2583 release_sock+0x4f/0x170 net/core/sock.c:3134 tipc_wait_for_rcvmsg.isra.0+0x26b/0x4b0 net/tipc/socket.c:1849 tipc_recvstream+0x204/0x8b0 net/tipc/socket.c:2040 sock_recvmsg_nosec net/socket.c:905 [inline] sock_recvmsg net/socket.c:923 [inline] sock_recvmsg net/socket.c:919 [inline] ____sys_recvmsg+0x286/0x700 net/socket.c:2595 ___sys_recvmsg+0x109/0x1d0 net/socket.c:2637 __sys_recvmsg+0xc0/0x160 net/socket.c:2667 __do_sys_recvmsg net/socket.c:2677 [inline] __se_sys_recvmsg net/socket.c:2674 [inline] __x64_sys_recvmsg+0x73/0xb0 net/socket.c:2674 do_syscall_64+0x32/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fdf2abac169 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:00007fdf2a5fc038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007fdf2add4080 RCX: 00007fdf2abac169 RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000003 RBP: 00007fdf2ac2ea68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fdf2add4080 R15: 00007ffd20fe5448 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 585 Comm: syz.2.29 Not tainted 5.10.238-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:104 [inline] RIP: 0010:kvm_wait arch/x86/kernel/kvm.c:923 [inline] RIP: 0010:kvm_wait+0x70/0x90 arch/x86/kernel/kvm.c:903 Code: 9d 48 8b 5d f8 c9 c3 f6 c7 02 75 10 0f 1f 44 00 00 0f 00 2d 02 b4 fd 02 f4 eb e4 c3 0f 1f 44 00 00 0f 00 2d f2 b3 fd 02 fb f4 d3 89 75 ec 48 89 7d f0 e8 e2 e5 67 00 8b 75 ec 48 8b 7d f0 eb RSP: 0018:ffffc90000e978e8 EFLAGS: 00000242 RAX: 0000000000000003 RBX: 0000000000000286 RCX: 1ffff110229f5471 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888114faa388 RBP: ffffc90000e97900 R08: 0000000000000001 R09: ffff888114faa388 R10: ffffed10229f5471 R11: 0000000000000000 R12: ffff888114faa388 R13: ffffed10229f5471 R14: 0000000000000001 R15: 0000000000000000 FS: 00007fdf2a61d6c0(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdf2a5fcd58 CR3: 0000000115c72000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0x939/0xc10 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+0xeb/0x110 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] lock_sock_nested+0x1b/0xc0 net/core/sock.c:3117 lock_sock include/net/sock.h:1648 [inline] tipc_sendstream+0x3f/0x70 net/tipc/socket.c:1540 sock_sendmsg_nosec net/socket.c:652 [inline] __sock_sendmsg+0xb5/0xf0 net/socket.c:664 ____sys_sendmsg+0x694/0x990 net/socket.c:2376 ___sys_sendmsg+0xfc/0x190 net/socket.c:2430 __sys_sendmsg+0xc3/0x160 net/socket.c:2459 __do_sys_sendmsg net/socket.c:2468 [inline] __se_sys_sendmsg net/socket.c:2466 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2466 do_syscall_64+0x32/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fdf2abac169 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:00007fdf2a61d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdf2add3fa0 RCX: 00007fdf2abac169 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000004 RBP: 00007fdf2ac2ea68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdf2add3fa0 R15: 00007ffd20fe5448