ci starts bisection 2024-06-06 18:17:41.795800229 +0000 UTC m=+80519.557501439 bisecting fixing commit since 61df575632d6b39213f47810c441bddbd87c3606 building syzkaller on 0ea90952bdac100bde3149fa2a7818ba7af943b4 ensuring issue is reproducible on original commit 61df575632d6b39213f47810c441bddbd87c3606 testing commit 61df575632d6b39213f47810c441bddbd87c3606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0ba53d03ba9d89bbfe2661eb2ab9b95c95327d9c32b4850a5b85555bee1f5fef run #0: crashed: possible deadlock in console_flush_all run #1: crashed: possible deadlock in __hrtimer_run_queues run #2: crashed: possible deadlock in console_flush_all run #3: crashed: possible deadlock in console_flush_all run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: possible deadlock in console_flush_all run #6: crashed: possible deadlock in console_flush_all run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: crashed: WARNING in sock_hash_delete_elem run #10: crashed: possible deadlock in hrtimer_run_queues run #11: crashed: possible deadlock in hrtimer_run_queues run #12: crashed: possible deadlock in hrtimer_run_queues run #13: crashed: possible deadlock in hrtimer_run_queues run #14: crashed: possible deadlock in hrtimer_run_queues run #15: crashed: possible deadlock in __hrtimer_run_queues run #16: crashed: possible deadlock in console_flush_all run #17: crashed: possible deadlock in hrtimer_run_queues run #18: crashed: possible deadlock in console_flush_all run #19: crashed: possible deadlock in hrtimer_start_range_ns representative crash: possible deadlock in console_flush_all, 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 61df575632d6b39213f47810c441bddbd87c3606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7e9f727aec59105bc8da2eec9db08b960bdcd26445b6eb66705955abeea10b8e run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: possible deadlock in hrtimer_run_queues run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: inconsistent lock state in sock_hash_delete_elem run #4: crashed: inconsistent lock state in sock_hash_delete_elem run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: crashed: possible deadlock in hrtimer_run_queues representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed kconfig minimization: base=3976 full=7972 leaves diff=2011 split chunks (needed=false): <2011> split chunk #0 of len 2011 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 61df575632d6b39213f47810c441bddbd87c3606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7210917658cbd9595a9b477b9cc5db93b8b46a1b929e575215694164146ab850 run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: inconsistent lock state in sock_hash_delete_elem run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: inconsistent lock state in sock_hash_delete_elem run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: crashed: possible deadlock in hrtimer_run_queues representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 61df575632d6b39213f47810c441bddbd87c3606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b251d94f0ab765ee221c808d5cb6e20235fbcd693e14feb6b7391a3103769884 run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: inconsistent lock state in sock_hash_delete_elem run #2: crashed: inconsistent lock state in sock_hash_delete_elem run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: inconsistent lock state in sock_hash_delete_elem run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: crashed: inconsistent lock state in sock_hash_delete_elem representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 61df575632d6b39213f47810c441bddbd87c3606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06882529b380f01b70ffd9a4ca0a888f80f689152fe4eaaba241262c29c146f0 run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: possible deadlock in hrtimer_run_queues run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: inconsistent lock state in sock_hash_delete_elem run #6: crashed: inconsistent lock state in sock_hash_delete_elem run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: inconsistent lock state in sock_hash_delete_elem run #9: crashed: possible deadlock in hrtimer_run_queues representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 61df575632d6b39213f47810c441bddbd87c3606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6b903a9c63d278702756100041a7a48407df84e83129d07822682b53d3450387 run #0: crashed: inconsistent lock state in sock_hash_delete_elem run #1: crashed: inconsistent lock state in sock_hash_delete_elem run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: inconsistent lock state in __do_softirq run #9: crashed: inconsistent lock state in sock_hash_delete_elem representative crash: inconsistent lock state in sock_hash_delete_elem, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 61df575632d6b39213f47810c441bddbd87c3606 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bea04fc8070bf784f644f62a430c2baf35e3733427b43061d5068b01ebd422fa all runs: OK false negative chance: 0.000 minimized to 399 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HAVE_KVM HID_ZEROPLUS HW_CONSOLE I2C_MUX IIO IOMMUFD IRQ_REMAP KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_F_ACM USB_F_ECM USB_F_EEM 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VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER 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 WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI 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 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing current HEAD 08ac454e258e38813afb906650f19acce3afd982 testing commit 08ac454e258e38813afb906650f19acce3afd982 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d2f397de6867344bc0bcb13d9e40e8eea70821005b3a1354d6932c9e59f2735a all runs: OK false negative chance: 0.000 # git bisect start 08ac454e258e38813afb906650f19acce3afd982 61df575632d6b39213f47810c441bddbd87c3606 Bisecting: 11296 revisions left to test after this (roughly 14 steps) [14a60290edf6d947b9e2210f7a223bcc6af1716a] Merge tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit checking the merge base 9187210eee7d87eea37b45ea93454a88681894a4 no existing result, test the revision testing commit 9187210eee7d87eea37b45ea93454a88681894a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a07252b843e0fac4dbd508b33f531dee60246c20a42fe309e80478cca2a4767e run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: inconsistent lock state in __do_softirq run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: inconsistent lock state in sock_hash_delete_elem run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: inconsistent lock state in sock_hash_delete_elem run #8: crashed: possible deadlock in hrtimer_run_queues run #9: OK representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] testing commit 14a60290edf6d947b9e2210f7a223bcc6af1716a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 185b37a911d7e8fa5bf2c85a31b97f5d540b7136ae0981fd31095a9f087a4f05 all runs: OK false negative chance: 0.000 # git bisect bad 14a60290edf6d947b9e2210f7a223bcc6af1716a Bisecting: 5554 revisions left to test after this (roughly 13 steps) [4f712ee0cbbd5c777d270427092bb301fc31044f] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit 4f712ee0cbbd5c777d270427092bb301fc31044f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f19f5f3c99415d0bc0a6b4aef68f43f040999461fe15a7670cb6559d1fdfc719 run #0: crashed: inconsistent lock state in sock_hash_delete_elem run #1: crashed: possible deadlock in hrtimer_run_queues run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: crashed: possible deadlock in hrtimer_run_queues representative crash: inconsistent lock state in sock_hash_delete_elem, types: [LOCKDEP] # git bisect good 4f712ee0cbbd5c777d270427092bb301fc31044f Bisecting: 2778 revisions left to test after this (roughly 12 steps) [86dbf8c566417afd62087ecd3bedcf84f91ee4e4] bcachefs: Fix btree node merging on write buffer btrees determine whether the revision contains the guilty commit revision 4f712ee0cbbd5c777d270427092bb301fc31044f crashed and is reachable testing commit 86dbf8c566417afd62087ecd3bedcf84f91ee4e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0c12921c9769004ca5118a780506e06ddb92e8e604c00dd53c22fb65f17f7ac run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: possible deadlock in hrtimer_run_queues run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: inconsistent lock state in sock_hash_delete_elem run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: crashed: possible deadlock in hrtimer_run_queues representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] # git bisect good 86dbf8c566417afd62087ecd3bedcf84f91ee4e4 Bisecting: 1394 revisions left to test after this (roughly 11 steps) [63407d3081a6b406d94bd7d96ff2ca38fa7df236] Merge tag 'phy-fixes-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit 63407d3081a6b406d94bd7d96ff2ca38fa7df236 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0eaa28801e2f7000d333323a645f9b58c3358e308f7ff92771e23424817c60f0 all runs: OK false negative chance: 0.000 # git bisect bad 63407d3081a6b406d94bd7d96ff2ca38fa7df236 Bisecting: 681 revisions left to test after this (roughly 10 steps) [678e14c772130d3a83225ed56fb9860a40bca38b] Merge tag 'soc-fixes-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit revision 4f712ee0cbbd5c777d270427092bb301fc31044f crashed and is reachable testing commit 678e14c772130d3a83225ed56fb9860a40bca38b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 66140b3e94616cf40051eae7453d4ac5459f9d870fa1efd755d7c23b1af4322c all runs: OK false negative chance: 0.000 # git bisect bad 678e14c772130d3a83225ed56fb9860a40bca38b Bisecting: 347 revisions left to test after this (roughly 9 steps) [119c289409ddb9bca55074388f282ca67da67692] Merge tag '6.9-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit 119c289409ddb9bca55074388f282ca67da67692 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b09137ff5b5fc55479a13032a5cf5c7fa0b93586f9bb3d2361312638aafa62a6 all runs: OK false negative chance: 0.000 # git bisect bad 119c289409ddb9bca55074388f282ca67da67692 Bisecting: 171 revisions left to test after this (roughly 8 steps) [89103a164210f1c88caedf880ac9ab9576a1190d] Merge tag 'drm-fixes-2024-04-05' of https://gitlab.freedesktop.org/drm/kernel determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit 89103a164210f1c88caedf880ac9ab9576a1190d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 74512f297a8d34d8eded617e2ff75b8c56b4138ac2b9482a8b71bfc2ee6c70de all runs: OK false negative chance: 0.000 # git bisect bad 89103a164210f1c88caedf880ac9ab9576a1190d Bisecting: 89 revisions left to test after this (roughly 7 steps) [1cfa2f10f4e90a353c3ee2150866b4cf72579153] Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf determine whether the revision contains the guilty commit revision 4f712ee0cbbd5c777d270427092bb301fc31044f crashed and is reachable testing commit 1cfa2f10f4e90a353c3ee2150866b4cf72579153 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4ccd58521f05865c45fb2a033384ba35466437e119daceb30ff6e3950367f46a all runs: OK false negative chance: 0.000 # git bisect bad 1cfa2f10f4e90a353c3ee2150866b4cf72579153 Bisecting: 45 revisions left to test after this (roughly 6 steps) [fcf4692fa39e86a590c14a4af2de704e1d20a3b5] mptcp: prevent BPF accessing lowat from a subflow socket. determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit fcf4692fa39e86a590c14a4af2de704e1d20a3b5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9f7d04a575c5294e01fe6a7c057fc131b33e6a60a777d3ea923bc5a925d7d5d0 run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: inconsistent lock state in sock_hash_delete_elem run #2: crashed: inconsistent lock state in sock_hash_delete_elem run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: OK representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] # git bisect good fcf4692fa39e86a590c14a4af2de704e1d20a3b5 Bisecting: 22 revisions left to test after this (roughly 5 steps) [24cea9677025e0de419989ecb692acd4bb34cac2] netfilter: nf_tables: flush pending destroy work before exit_net release determine whether the revision contains the guilty commit revision 4f712ee0cbbd5c777d270427092bb301fc31044f crashed and is reachable testing commit 24cea9677025e0de419989ecb692acd4bb34cac2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b0f132cd89d0a5cbe9d039e101d7339d2fa23fe8c8aa06813a7d6c78c6f35be5 run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: possible deadlock in hrtimer_run_queues run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: inconsistent lock state in sock_hash_delete_elem run #9: crashed: inconsistent lock state in sock_hash_delete_elem representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] # git bisect good 24cea9677025e0de419989ecb692acd4bb34cac2 Bisecting: 9 revisions left to test after this (roughly 4 steps) [d432f7bdc1cddd37e73dbe6b53b48785ab789e92] Merge tag 'nf-24-04-04' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit d432f7bdc1cddd37e73dbe6b53b48785ab789e92 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0cc0b2127a52513ce7ca65c940cb8e837874df6912239ebb13ca7e4de180caf8 run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: possible deadlock in hrtimer_run_queues run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: inconsistent lock state in sock_hash_delete_elem run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: inconsistent lock state in sock_hash_delete_elem run #6: crashed: inconsistent lock state in sock_hash_delete_elem run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: possible deadlock in hrtimer_run_queues run #9: OK representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] # git bisect good d432f7bdc1cddd37e73dbe6b53b48785ab789e92 Bisecting: 4 revisions left to test after this (roughly 2 steps) [9d98aa088386aee3db1b7b60b800c0fde0654a4a] x86/bpf: Fix IP after emitting call depth accounting determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit 9d98aa088386aee3db1b7b60b800c0fde0654a4a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1204058df0f2b62640badc196b07773f962389a2bc5e4d3b32d8a50a4adf6a18 run #0: crashed: inconsistent lock state in sock_hash_delete_elem run #1: crashed: possible deadlock in hrtimer_run_queues run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: possible deadlock in hrtimer_run_queues run #5: crashed: possible deadlock in hrtimer_run_queues run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: possible deadlock in hrtimer_run_queues run #8: crashed: inconsistent lock state in sock_hash_delete_elem run #9: crashed: possible deadlock in hrtimer_run_queues representative crash: inconsistent lock state in sock_hash_delete_elem, types: [LOCKDEP] # git bisect good 9d98aa088386aee3db1b7b60b800c0fde0654a4a Bisecting: 2 revisions left to test after this (roughly 1 step) [8c3fe029d79ada599fa558fdf3da0322fc38de36] Merge branch 'x86-bpf-fixes-for-the-bpf-jit-with-retbleed-stuff' determine whether the revision contains the guilty commit revision 9187210eee7d87eea37b45ea93454a88681894a4 crashed and is reachable testing commit 8c3fe029d79ada599fa558fdf3da0322fc38de36 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5148f3d787d2272e12fb06675c04b62d8f552e238cdb3804e60ec203c3fd800e run #0: crashed: possible deadlock in hrtimer_run_queues run #1: crashed: inconsistent lock state in sock_hash_delete_elem run #2: crashed: possible deadlock in hrtimer_run_queues run #3: crashed: possible deadlock in hrtimer_run_queues run #4: crashed: inconsistent lock state in sock_hash_delete_elem run #5: crashed: inconsistent lock state in sock_hash_delete_elem run #6: crashed: possible deadlock in hrtimer_run_queues run #7: crashed: inconsistent lock state in sock_hash_delete_elem run #8: crashed: inconsistent lock state in sock_hash_delete_elem run #9: crashed: possible deadlock in hrtimer_run_queues representative crash: possible deadlock in hrtimer_run_queues, types: [LOCKDEP] # git bisect good 8c3fe029d79ada599fa558fdf3da0322fc38de36 Bisecting: 1 revision left to test after this (roughly 1 step) [ff91059932401894e6c86341915615c5eb0eca48] bpf, sockmap: Prevent lock inversion deadlock in map delete elem determine whether the revision contains the guilty commit revision 8c3fe029d79ada599fa558fdf3da0322fc38de36 crashed and is reachable testing commit ff91059932401894e6c86341915615c5eb0eca48 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2bdde70e125b9979f394d74c6723b9af36eb7280646970945f34cfc2971ed9c8 all runs: OK false negative chance: 0.000 # git bisect bad ff91059932401894e6c86341915615c5eb0eca48 ff91059932401894e6c86341915615c5eb0eca48 is the first bad commit commit ff91059932401894e6c86341915615c5eb0eca48 Author: Jakub Sitnicki Date: Tue Apr 2 12:46:21 2024 +0200 bpf, sockmap: Prevent lock inversion deadlock in map delete elem syzkaller started using corpuses where a BPF tracing program deletes elements from a sockmap/sockhash map. Because BPF tracing programs can be invoked from any interrupt context, locks taken during a map_delete_elem operation must be hardirq-safe. Otherwise a deadlock due to lock inversion is possible, as reported by lockdep: CPU0 CPU1 ---- ---- lock(&htab->buckets[i].lock); local_irq_disable(); lock(&host->lock); lock(&htab->buckets[i].lock); lock(&host->lock); Locks in sockmap are hardirq-unsafe by design. We expects elements to be deleted from sockmap/sockhash only in task (normal) context with interrupts enabled, or in softirq context. Detect when map_delete_elem operation is invoked from a context which is _not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an error. Note that map updates are not affected by this issue. BPF verifier does not allow updating sockmap/sockhash from a BPF tracing program today. Fixes: 604326b41a6f ("bpf, sockmap: convert to generic sk_msg interface") Reported-by: xingwei lee Reported-by: yue sun Reported-by: syzbot+bc922f476bd65abbd466@syzkaller.appspotmail.com Reported-by: syzbot+d4066896495db380182e@syzkaller.appspotmail.com Signed-off-by: Jakub Sitnicki Signed-off-by: Daniel Borkmann Tested-by: syzbot+d4066896495db380182e@syzkaller.appspotmail.com Acked-by: John Fastabend Closes: https://syzkaller.appspot.com/bug?extid=d4066896495db380182e Closes: https://syzkaller.appspot.com/bug?extid=bc922f476bd65abbd466 Link: https://lore.kernel.org/bpf/20240402104621.1050319-1-jakub@cloudflare.com net/core/sock_map.c | 6 ++++++ 1 file changed, 6 insertions(+) accumulated error probability: 0.00 culprit signature: 2bdde70e125b9979f394d74c6723b9af36eb7280646970945f34cfc2971ed9c8 parent signature: 5148f3d787d2272e12fb06675c04b62d8f552e238cdb3804e60ec203c3fd800e revisions tested: 23, total time: 8h32m31.37654216s (build: 4h59m57.570827359s, test: 2h53m43.309036765s) first good commit: ff91059932401894e6c86341915615c5eb0eca48 bpf, sockmap: Prevent lock inversion deadlock in map delete elem recipients (to): ["daniel@iogearbox.net" "jakub@cloudflare.com" "john.fastabend@gmail.com" "syzbot+d4066896495db380182e@syzkaller.appspotmail.com"] recipients (cc): []