ci2 starts bisection 2025-04-17 19:18:02.990582515 +0000 UTC m=+39008.276701914 bisecting fixing commit since 7dc732d24ff75bae3740d2876b634c0158c79cad building syzkaller on f3558dbf032eab2b77c1cb11b9ce2baffe7838d3 ensuring issue is reproducible on original commit 7dc732d24ff75bae3740d2876b634c0158c79cad testing commit 7dc732d24ff75bae3740d2876b634c0158c79cad gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 004681d845d12e92ffe6a22618f7ee7567bab1eabf44261ab3753d311e47837f all runs: crashed: possible deadlock in __queue_map_get representative crash: possible deadlock in __queue_map_get, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 7dc732d24ff75bae3740d2876b634c0158c79cad gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 04e5e139fae69637efac6c3d8ab35a60ea64821264db2ae923364537a9cf1465 all runs: crashed: possible deadlock in __queue_map_get representative crash: possible deadlock in __queue_map_get, 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=3822 full=7500 leaves diff=2070 split chunks (needed=false): <2070> split chunk #0 of len 2070 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 7dc732d24ff75bae3740d2876b634c0158c79cad gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: de27358c6347b7b1642a4619e474ca1a38dd2714a3a6af45649a2d68330cec39 all runs: crashed: possible deadlock in __queue_map_get representative crash: possible deadlock in __queue_map_get, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 7dc732d24ff75bae3740d2876b634c0158c79cad gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: a760641ce8fa345a1301877c6b17e265f4a7bd181cd489f414a7d3c0c68111c2 all runs: crashed: possible deadlock in __queue_map_get representative crash: possible deadlock in __queue_map_get, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 7dc732d24ff75bae3740d2876b634c0158c79cad gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 0c3d59038be031c3fe8c4ae43e998176dad8ce286e9010dc10de6d2e37a4e266 all runs: crashed: possible deadlock in __queue_map_get representative crash: possible deadlock in __queue_map_get, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 7dc732d24ff75bae3740d2876b634c0158c79cad gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: e9229dbdccf6d104563a49aecae2bce802245c03b9cad17b65e56857278de604 all runs: crashed: possible deadlock in __queue_map_get representative crash: possible deadlock in __queue_map_get, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 7dc732d24ff75bae3740d2876b634c0158c79cad gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: d3412953d667e2a26e635267d97d4e0c8a544f9c69f58136976614e3f08f5327 all runs: OK false negative chance: 0.000 minimized to 414 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_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HID_ZEROPLUS I2C_MUX IIO 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_CHIPIDEA USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS 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_CONN_GPIO 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_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI 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VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_STK1160_COMMON 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_SILABS 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 XILLYBUS_CLASS XILLYUSB 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_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing current HEAD 420102835862f49ec15c545594278dc5d2712f42 testing commit 420102835862f49ec15c545594278dc5d2712f42 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: dc5c59335c08fd5abbe986f9a973f17774708e70730b43f7c277a4e1fe7fe835 all runs: crashed: possible deadlock in __queue_map_get representative crash: possible deadlock in __queue_map_get, types: [LOCKDEP] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 2h5m55.58287734s (build: 1h25m23.051567911s, test: 37m9.836099025s) crash still not fixed or there were kernel test errors commit msg: Linux 6.1.134 crash: possible deadlock in __queue_map_get ============================================ WARNING: possible recursive locking detected 6.1.134-syzkaller #0 Not tainted -------------------------------------------- syz-executor/2863 is trying to acquire lock: ffff888122e3ca18 (&qs->lock){....}-{2:2}, at: __queue_map_get+0x6a/0x150 kernel/bpf/queue_stack_maps.c:109 but task is already holding lock: ffff888123d1ea18 (&qs->lock){....}-{2:2}, at: __queue_map_get+0x6a/0x150 kernel/bpf/queue_stack_maps.c:109 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&qs->lock); lock(&qs->lock); *** DEADLOCK *** May be due to missing lock nesting notation 4 locks held by syz-executor/2863: #0: ffff888104693d88 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_target+0x75/0x120 net/netfilter/x_tables.c:254 #1: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #1: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #1: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline] #1: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x50/0x190 kernel/trace/bpf_trace.c:2323 #2: ffff888123d1ea18 (&qs->lock){....}-{2:2}, at: __queue_map_get+0x6a/0x150 kernel/bpf/queue_stack_maps.c:109 #3: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #3: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #3: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline] #3: ffffffff83186d60 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x50/0x190 kernel/trace/bpf_trace.c:2323 stack backtrace: CPU: 1 PID: 2863 Comm: syz-executor Not tainted 6.1.134-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x89/0xd7 lib/dump_stack.c:106 __lock_acquire+0x73d/0x2830 kernel/locking/lockdep.c:-1 lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5d/0x90 kernel/locking/spinlock.c:162 __queue_map_get+0x6a/0x150 kernel/bpf/queue_stack_maps.c:109 ____bpf_map_peek_elem kernel/bpf/helpers.c:115 [inline] bpf_map_peek_elem+0x9/0x10 kernel/bpf/helpers.c:113 ___bpf_prog_run+0x816/0x1b20 kernel/bpf/core.c:1846 __bpf_prog_run32+0xb7/0xe0 kernel/bpf/core.c:2072 bpf_dispatcher_nop_func include/linux/bpf.h:1000 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2284 [inline] bpf_trace_run2+0xc3/0x190 kernel/trace/bpf_trace.c:2323 __traceiter_contention_begin+0x26/0x40 include/trace/events/lock.h:95 trace_contention_begin include/trace/events/lock.h:95 [inline] __pv_queued_spin_lock_slowpath+0x419/0x480 kernel/locking/qspinlock.c:405 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x95/0xa0 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0x69/0x90 kernel/locking/spinlock.c:162 __queue_map_get+0x6a/0x150 kernel/bpf/queue_stack_maps.c:109 ____bpf_map_peek_elem kernel/bpf/helpers.c:115 [inline] bpf_map_peek_elem+0x9/0x10 kernel/bpf/helpers.c:113 ___bpf_prog_run+0x816/0x1b20 kernel/bpf/core.c:1846 __bpf_prog_run32+0xb7/0xe0 kernel/bpf/core.c:2072 bpf_dispatcher_nop_func include/linux/bpf.h:1000 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2284 [inline] bpf_trace_run2+0xc3/0x190 kernel/trace/bpf_trace.c:2323 __traceiter_contention_begin+0x26/0x40 include/trace/events/lock.h:95 trace_contention_begin include/trace/events/lock.h:95 [inline] __mutex_lock_common kernel/locking/mutex.c:605 [inline] __mutex_lock+0x7b4/0x970 kernel/locking/mutex.c:747 xt_find_target+0x75/0x120 net/netfilter/x_tables.c:254 xt_request_find_target+0x47/0x90 net/netfilter/x_tables.c:282 find_check_entry net/ipv6/netfilter/ip6_tables.c:565 [inline] translate_table+0x593/0x7f0 net/ipv6/netfilter/ip6_tables.c:735 do_replace net/ipv6/netfilter/ip6_tables.c:1156 [inline] do_ip6t_set_ctl+0x3e9/0x600 net/ipv6/netfilter/ip6_tables.c:1646 nf_setsockopt+0x9a/0xd0 net/netfilter/nf_sockopt.c:101 __sys_setsockopt+0xca/0x100 net/socket.c:2288 __do_sys_setsockopt net/socket.c:2299 [inline] __se_sys_setsockopt net/socket.c:2296 [inline] __x64_sys_setsockopt+0x18/0x20 net/socket.c:2296 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff464b39c1a Code: ff ff ff c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 RSP: 002b:00007ffc805e1a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007ffc805e1b20 RCX: 00007ff464b39c1a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00000000000003b8 R09: 00007ffc805e1ed7 R10: 00007ff464cf8ce0 R11: 0000000000000202 R12: 00007ff464cf8c80 R13: 00007ffc805e1abc R14: 0000000000000000 R15: 00007ff464cfae40