ci starts bisection 2023-07-17 02:23:41.512806977 +0000 UTC m=+189266.462638360
bisecting fixing commit since 60d86034b14eed902b3f2bea97d0c237cf2f9499
building syzkaller on 96166539c4c242fccd41c7316b7080377dca428b
ensuring issue is reproducible on original commit 60d86034b14eed902b3f2bea97d0c237cf2f9499
testing commit 60d86034b14eed902b3f2bea97d0c237cf2f9499 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 880bfb91d3e44a255673f42c6c3a6badfd5c7c30e9a8ae9245e8b411c7002695
all runs: crashed: possible deadlock in br_multicast_rcv
representative crash: possible deadlock in br_multicast_rcv, types: [LOCKDEP]
check whether we can drop unnecessary instrumentation
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
testing commit 60d86034b14eed902b3f2bea97d0c237cf2f9499 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7b98cc508f9bfc462d4140e9abe01380e764420e317d1a4e51b615e7cc4c7f90
all runs: crashed: possible deadlock in br_multicast_rcv
representative crash: possible deadlock in br_multicast_rcv, types: [LOCKDEP]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=3883 full=7552 leaves diff=1999
split chunks (needed=false): <1999>
split chunk #0 of len 1999 into 5 parts
testing without sub-chunk 1/5
testing commit 60d86034b14eed902b3f2bea97d0c237cf2f9499 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a481282a4f3fdc4120e5770e93b832887282a21d673e4ac87761deaac3fbdb76
all runs: crashed: possible deadlock in br_multicast_rcv
representative crash: possible deadlock in br_multicast_rcv, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 2/5
testing commit 60d86034b14eed902b3f2bea97d0c237cf2f9499 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5241383aafbdaacbb685fab03000be276720d69f7eadbe98efaa2be1ec4be010
all runs: crashed: possible deadlock in br_multicast_rcv
representative crash: possible deadlock in br_multicast_rcv, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 3/5
testing commit 60d86034b14eed902b3f2bea97d0c237cf2f9499 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5ab5dd15c95d2286ad7afb07db16cb66951ca45299677efc9a9ef1846c1677bd
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
testing commit 60d86034b14eed902b3f2bea97d0c237cf2f9499 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 827fd420b7aabd452e7d6ed9f252307840bb12e67f871e73eb3144bb0c3463d9
all runs: crashed: possible deadlock in br_multicast_rcv
representative crash: possible deadlock in br_multicast_rcv, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 5/5
testing commit 60d86034b14eed902b3f2bea97d0c237cf2f9499 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4499f5e6029e2305cb1ce3b60e664f3500972251ce444f49da5c5ccf6f23d9df
run #0: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1395993068" "root@10.128.10.30:./syz-executor1395993068"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.30, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.30 [10.128.10.30] port 22.
debug1: connect to address 10.128.10.30 port 22: Connection timed out
ssh: connect to host 10.128.10.30 port 22: Connection timed out
scp: Connection closed
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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3701603459" "root@10.128.10.29:./syz-executor3701603459"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.29, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.29 [10.128.10.29] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2
Connection timed out during banner exchange
Connection to 10.128.10.29 port 22 timed out
scp: Connection closed
run #2: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor368721394" "root@10.128.10.25:./syz-executor368721394"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.25, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.25 [10.128.10.25] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2
Connection timed out during banner exchange
Connection to 10.128.10.25 port 22 timed out
scp: Connection closed
run #3: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3780873356" "root@10.128.10.44:./syz-executor3780873356"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.44, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.44 [10.128.10.44] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2
Connection timed out during banner exchange
Connection to 10.128.10.44 port 22 timed out
scp: Connection closed
run #4: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1199941628" "root@10.128.10.45:./syz-executor1199941628"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.45, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.45 [10.128.10.45] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2
Connection timed out during banner exchange
Connection to 10.128.10.45 port 22 timed out
scp: Connection closed
run #5: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2099985630" "root@10.128.1.85:./syz-executor2099985630"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.85, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.85 [10.128.1.85] port 22.
debug1: connect to address 10.128.1.85 port 22: Connection timed out
ssh: connect to host 10.128.1.85 port 22: Connection timed out
scp: Connection closed
run #6: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1893809270" "root@10.128.10.60:./syz-executor1893809270"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.60, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.60 [10.128.10.60] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: kex_exchange_identification: write: Connection reset by peer
Connection reset by 10.128.10.60 port 22
scp: Connection closed
run #7: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2161043429" "root@10.128.10.56:./syz-executor2161043429"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.56, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.56 [10.128.10.56] port 22.
debug1: connect to address 10.128.10.56 port 22: Connection timed out
ssh: connect to host 10.128.10.56 port 22: Connection timed out
scp: Connection closed
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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor85770099" "root@10.128.10.58:./syz-executor85770099"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.58, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.58 [10.128.10.58] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2
Connection timed out during banner exchange
Connection to 10.128.10.58 port 22 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" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor476858849" "root@10.128.10.63:./syz-executor476858849"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.63, user root, command sftp
OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.63 [10.128.10.63] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2
Connection timed out during banner exchange
Connection to 10.128.10.63 port 22 timed out
scp: Connection closed
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
minimized to 799 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 BCMA BLK_DEV_ZONED BPF_SYSCALL BRIDGE BRIDGE_NETFILTER CAN CARDBUS CFG80211 CFG80211_WEXT CHECKPOINT_RESTORE CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB FSCACHE GPIOLIB HAMRADIO HID_ZEROPLUS HSR I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IOMMUFD IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_INTEL KVM_MMIO KVM_SMM KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_DEBUGFS MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TEST_SUPPORT MEDIA_TUNER MEDIA_TUNER_MSI001 MEDIA_USB_SUPPORT MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_HOTREMOVE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MFD_VIPERBOARD MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT 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VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WAN WANT_DEV_COREDUMP WATCH_QUEUE WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS WWAN X25 X86_FEATURE_NAMES X86_SGX X86_SGX_KVM X86_X2APIC X86_X32_ABI XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XFS_SUPPORT_V4 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_ZPOOL_DEFAULT_ZBUD]
disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed
testing current HEAD 68af900072c157c0cdce0256968edd15067e1e5a
testing commit 68af900072c157c0cdce0256968edd15067e1e5a gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9a2ddc5c5885c386cb83ed64fde65007c86de7369688c21dc82ee9996b22ddbd
all runs: crashed: possible deadlock in br_multicast_rcv
representative crash: possible deadlock in br_multicast_rcv, types: [LOCKDEP]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h46m26.150022406s (build: 1h5m57.823319974s, test: 37m42.98628549s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: gve: trivial spell fix Recive to Receive
crash: possible deadlock in br_multicast_rcv
============================================
WARNING: possible recursive locking detected
6.5.0-rc1-syzkaller #0 Not tainted
--------------------------------------------
kworker/1:1/31 is trying to acquire lock:
ffff8881188b32e0 (&br->multicast_lock){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff8881188b32e0 (&br->multicast_lock){+.-.}-{2:2}, at: br_ip6_multicast_query net/bridge/br_multicast.c:3518 [inline]
ffff8881188b32e0 (&br->multicast_lock){+.-.}-{2:2}, at: br_multicast_ipv6_rcv net/bridge/br_multicast.c:3914 [inline]
ffff8881188b32e0 (&br->multicast_lock){+.-.}-{2:2}, at: br_multicast_rcv+0x10c2/0x2ae0 net/bridge/br_multicast.c:3969
but task is already holding lock:
ffff88811a8d72e0 (&br->multicast_lock){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff88811a8d72e0 (&br->multicast_lock){+.-.}-{2:2}, at: br_multicast_port_query_expired+0x2a/0x150 net/bridge/br_multicast.c:1900
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&br->multicast_lock);
lock(&br->multicast_lock);
*** DEADLOCK ***
May be due to missing lock nesting notation
10 locks held by kworker/1:1/31:
#0: ffff888113424338 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: wake_up_worker kernel/workqueue.c:898 [inline]
#0: ffff888113424338 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x2e5/0x760 kernel/workqueue.c:2559
#1: ffffc9000010fe68 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: wake_up_worker kernel/workqueue.c:898 [inline]
#1: ffffc9000010fe68 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x2e5/0x760 kernel/workqueue.c:2559
#2: ffffffff8477c708 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0x5a/0x890 net/ipv6/addrconf.c:4087
#3: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: rcu_read_unlock include/linux/rcupdate.h:778 [inline]
#3: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: ip6_nd_hdr net/ipv6/ndisc.c:454 [inline]
#3: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: ndisc_send_skb+0x215/0x8c0 net/ipv6/ndisc.c:502
#4: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: lwtunnel_xmit_redirect include/net/lwtunnel.h:95 [inline]
#4: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: ip6_finish_output2+0x10d/0x1110 net/ipv6/ip6_output.c:113
#5: ffffc900000d0e60 ((&pmctx->ip6_own_query.timer)){+.-.}-{0:0}, at: call_timer_fn+0x0/0x2b0 kernel/time/timer.c:1670
#6: ffff88811a8d72e0 (&br->multicast_lock){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#6: ffff88811a8d72e0 (&br->multicast_lock){+.-.}-{2:2}, at: br_multicast_port_query_expired+0x2a/0x150 net/bridge/br_multicast.c:1900
#7: ffffffff845a6bc0 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0xa8/0x1ef0 net/core/dev.c:4120
#8: ffffffff845a6bc0 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0xa8/0x1ef0 net/core/dev.c:4120
#9: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
#9: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: br_tc_skb_miss_set net/bridge/br_private.h:763 [inline]
#9: ffffffff845a6c00 (rcu_read_lock){....}-{1:2}, at: br_dev_xmit+0x68/0xa00 net/bridge/br_device.c:42
stack backtrace:
CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 6.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
check_deadlock kernel/locking/lockdep.c:3070 [inline]
validate_chain kernel/locking/lockdep.c:3863 [inline]
__lock_acquire+0x1151/0x1d00 kernel/locking/lockdep.c:5144
lock_acquire kernel/locking/lockdep.c:5761 [inline]
lock_acquire+0xcd/0x2d0 kernel/locking/lockdep.c:5726
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
br_ip6_multicast_query net/bridge/br_multicast.c:3518 [inline]
br_multicast_ipv6_rcv net/bridge/br_multicast.c:3914 [inline]
br_multicast_rcv+0x10c2/0x2ae0 net/bridge/br_multicast.c:3969
br_dev_xmit+0x253/0xa00 net/bridge/br_device.c:90
__netdev_start_xmit include/linux/netdevice.h:4910 [inline]
netdev_start_xmit include/linux/netdevice.h:4924 [inline]
xmit_one net/core/dev.c:3537 [inline]
dev_hard_start_xmit+0xac/0x350 net/core/dev.c:3553
__dev_queue_xmit+0x498/0x1ef0 net/core/dev.c:4203
dev_queue_xmit include/linux/netdevice.h:3088 [inline]
vlan_dev_hard_start_xmit+0x104/0x180 net/8021q/vlan_dev.c:125
__netdev_start_xmit include/linux/netdevice.h:4910 [inline]
netdev_start_xmit include/linux/netdevice.h:4924 [inline]
xmit_one net/core/dev.c:3537 [inline]
dev_hard_start_xmit+0xac/0x350 net/core/dev.c:3553
__dev_queue_xmit+0x498/0x1ef0 net/core/dev.c:4203
dev_queue_xmit include/linux/netdevice.h:3088 [inline]
br_dev_queue_push_xmit+0x150/0x3d0 net/bridge/br_forward.c:53
NF_HOOK include/linux/netfilter.h:303 [inline]
__br_multicast_send_query+0x5bb/0x14c0 net/bridge/br_multicast.c:1804
br_multicast_send_query+0x248/0x340 net/bridge/br_multicast.c:1883
br_multicast_port_query_expired+0x11b/0x150 net/bridge/br_multicast.c:1908
call_timer_fn+0xc5/0x2b0 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x328/0x480 kernel/time/timer.c:2022
run_timer_softirq+0x2f/0x50 kernel/time/timer.c:2035
__do_softirq+0x167/0x427 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0x86/0xe0 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0xa2/0xd0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 96 5a cc fd 48 89 df e8 5e 88 cc fd f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 c5 e1 c8 fd 65 8b 05 b6 24 aa 7c 85 c0 74 12 5b
RSP: 0018:ffffc9000010f9d8 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffffffff874a2f30 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff83f8f303 RDI: ffffffff83f3b04b
RBP: 0000000000000202 R08: 0000000000000000 R09: 0000000000000202
R10: 00000000567d013f R11: 0000000000000000 R12: ffffffff83fa4829
R13: ffffffff8753b220 R14: ffffffff82c275f0 R15: 0000000000000000
debug_timer_init kernel/time/timer.c:777 [inline]
debug_init kernel/time/timer.c:825 [inline]
init_timer_key+0x30/0x170 kernel/time/timer.c:869
neigh_alloc net/core/neighbour.c:499 [inline]
___neigh_create+0x29d/0x1490 net/core/neighbour.c:640
ip6_finish_output2+0x4a3/0x1110 net/ipv6/ip6_output.c:126
__ip6_finish_output+0x2a2/0x5e0 net/ipv6/ip6_output.c:196
ip6_finish_output net/ipv6/ip6_output.c:207 [inline]
NF_HOOK_COND include/linux/netfilter.h:292 [inline]
ip6_output+0xca/0x4c0 net/ipv6/ip6_output.c:228
dst_output include/net/dst.h:458 [inline]
NF_HOOK.constprop.0+0x6a/0x380 include/linux/netfilter.h:303
ndisc_send_skb+0x36f/0x8c0 net/ipv6/ndisc.c:508
ndisc_send_ns+0x85/0xf0 net/ipv6/ndisc.c:666
addrconf_dad_work+0x68c/0x890 net/ipv6/addrconf.c:4175
process_one_work+0x3a4/0x760 kernel/workqueue.c:2597
worker_thread+0x5f/0x520 kernel/workqueue.c:2748
kthread+0x10f/0x150 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
----------------
Code disassembly (best guess):
0: f5 cmc
1: 53 push %rbx
2: 48 8b 74 24 10 mov 0x10(%rsp),%rsi
7: 48 89 fb mov %rdi,%rbx
a: 48 83 c7 18 add $0x18,%rdi
e: e8 96 5a cc fd call 0xfdcc5aa9
13: 48 89 df mov %rbx,%rdi
16: e8 5e 88 cc fd call 0xfdcc8879
1b: f7 c5 00 02 00 00 test $0x200,%ebp
21: 75 1f jne 0x42
23: 9c pushf
24: 58 pop %rax
25: f6 c4 02 test $0x2,%ah
28: 75 2f jne 0x59
* 2a: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction
2f: e8 c5 e1 c8 fd call 0xfdc8e1f9
34: 65 8b 05 b6 24 aa 7c mov %gs:0x7caa24b6(%rip),%eax # 0x7caa24f1
3b: 85 c0 test %eax,%eax
3d: 74 12 je 0x51
3f: 5b pop %rbx