Hello, syzbot tried to test the proposed patch but the build/boot failed: ][ T1] usbcore: registered new interface driver port100 [ 7.895087][ T1] usbcore: registered new interface driver nfcmrvl [ 7.905107][ T1] Loading iSCSI transport class v2.0-870. [ 7.922010][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues [ 7.931607][ T1] ------------[ cut here ]------------ [ 7.932648][ T1] refcount_t: decrement hit 0; leaking memory. [ 7.933996][ T1] WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 [ 7.935773][ T1] Modules linked in: [ 7.936430][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc1-syzkaller-00035-g5f5d424df7e0 #0 [ 7.938346][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 7.940220][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 7.941129][ T1] Code: b2 00 00 00 e8 e7 3e f2 fc 5b 5d c3 cc cc cc cc e8 db 3e f2 fc c6 05 d1 c3 ce 0a 01 90 48 c7 c7 60 57 fe 8b e8 37 bd b4 fc 90 <0f> 0b 90 90 eb d9 e8 bb 3e f2 fc c6 05 ae c3 ce 0a 01 90 48 c7 c7 [ 7.944817][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 7.946204][ T1] RAX: 66500b6c8a695200 RBX: ffff88814074d61c RCX: ffff8880166c8000 [ 7.947881][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 7.949474][ T1] RBP: 0000000000000004 R08: ffffffff8157ffe2 R09: fffffbfff1bf96e0 [ 7.950651][ T1] R10: dffffc0000000000 R11: fffffbfff1bf96e0 R12: ffffea000083fdc0 [ 7.952066][ T1] R13: ffffea000083fdc8 R14: 1ffffd4000107fb9 R15: 0000000000000000 [ 7.953537][ T1] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 7.955023][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.956765][ T1] CR2: ffff88823ffff000 CR3: 000000000df32000 CR4: 00000000003506f0 [ 7.958239][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 7.959594][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 7.960858][ T1] Call Trace: [ 7.961668][ T1] <TASK> [ 7.962214][ T1] ? __warn+0x163/0x4e0 [ 7.963029][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.964034][ T1] ? report_bug+0x2b3/0x500 [ 7.964911][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.965754][ T1] ? handle_bug+0x3e/0x70 [ 7.966390][ T1] ? exc_invalid_op+0x1a/0x50 [ 7.967476][ T1] ? asm_exc_invalid_op+0x1a/0x20 [ 7.968393][ T1] ? __warn_printk+0x292/0x360 [ 7.969171][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.969977][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 7.971093][ T1] __free_pages_ok+0xc54/0xd80 [ 7.971989][ T1] make_alloc_exact+0xa3/0xf0 [ 7.972707][ T1] vring_alloc_queue_split+0x20a/0x600 [ 7.974010][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 7.975606][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 7.976506][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 7.977276][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 7.978066][ T1] ? really_probe+0x2b8/0xad0 [ 7.978729][ T1] ? driver_probe_device+0x50/0x430 [ 7.979895][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 7.980907][ T1] ? ret_from_fork+0x4b/0x80 [ 7.981907][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 7.983053][ T1] vring_create_virtqueue+0xca/0x110 [ 7.984261][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.985081][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.986232][ T1] setup_vq+0xe9/0x2d0 [ 7.987144][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.988136][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.989737][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.990898][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.992460][ T1] vp_setup_vq+0xbf/0x330 [ 7.993445][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 7.994457][ T1] ? ioread16+0x2f/0x90 [ 7.995411][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.996442][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 7.997332][ T1] vp_find_vqs+0x4c/0x4e0 [ 7.998606][ T1] virtscsi_init+0x8db/0xd00 [ 7.999359][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 8.000096][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 8.001321][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 8.002518][ T1] ? vp_get+0xfd/0x140 [ 8.003649][ T1] virtscsi_probe+0x3ea/0xf60 [ 8.004550][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 8.005302][ T1] ? vp_setup_vq+0x26d/0x330 [ 8.006401][ T1] ? __pfx_vp_set_status+0x10/0x10 [ 8.007509][ T1] ? vp_set_status+0x1a/0x40 [ 8.008360][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 8.009422][ T1] ? virtio_features_ok+0x10c/0x270 [ 8.010463][ T1] virtio_dev_probe+0x991/0xaf0 [ 8.011159][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 8.012074][ T1] really_probe+0x2b8/0xad0 [ 8.012764][ T1] __driver_probe_device+0x1a2/0x390 [ 8.013825][ T1] driver_probe_device+0x50/0x430 [ 8.014890][ T1] __driver_attach+0x45f/0x710 [ 8.015600][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.016479][ T1] bus_for_each_dev+0x239/0x2b0 [ 8.017551][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.018401][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 8.019494][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 8.020300][ T1] bus_add_driver+0x347/0x620 [ 8.020992][ T1] driver_register+0x23a/0x320 [ 8.021940][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.022834][ T1] virtio_scsi_init+0x65/0xe0 [ 8.023816][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.024765][ T1] do_one_initcall+0x248/0x880 [ 8.025532][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.026403][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.027532][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 8.028306][ T1] ? __pfx_parse_args+0x10/0x10 [ 8.029137][ T1] ? do_initcalls+0x1c/0x80 [ 8.029885][ T1] ? rcu_is_watching+0x15/0xb0 [ 8.031051][ T1] do_initcall_level+0x157/0x210 [ 8.032038][ T1] do_initcalls+0x3f/0x80 [ 8.032723][ T1] kernel_init_freeable+0x435/0x5d0 [ 8.033666][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 8.034835][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.035863][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.036989][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.037733][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.038424][ T1] kernel_init+0x1d/0x2b0 [ 8.039045][ T1] ret_from_fork+0x4b/0x80 [ 8.039774][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.040688][ T1] ret_from_fork_asm+0x1a/0x30 [ 8.041498][ T1] </TASK> [ 8.041923][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 8.042985][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc1-syzkaller-00035-g5f5d424df7e0 #0 [ 8.043627][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 8.043627][ T1] Call Trace: [ 8.043627][ T1] <TASK> [ 8.043627][ T1] dump_stack_lvl+0x241/0x360 [ 8.043627][ T1] ? __pfx_dump_stack_lvl+0x10/0x10 [ 8.043627][ T1] ? __pfx__printk+0x10/0x10 [ 8.043627][ T1] ? _printk+0xd5/0x120 [ 8.043627][ T1] ? vscnprintf+0x5d/0x90 [ 8.043627][ T1] panic+0x349/0x860 [ 8.043627][ T1] ? __warn+0x172/0x4e0 [ 8.043627][ T1] ? __pfx_panic+0x10/0x10 [ 8.043627][ T1] ? show_trace_log_lvl+0x4e6/0x520 [ 8.053439][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 8.053439][ T1] __warn+0x346/0x4e0 [ 8.053439][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 8.053439][ T1] report_bug+0x2b3/0x500 [ 8.053439][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 8.053439][ T1] handle_bug+0x3e/0x70 [ 8.053439][ T1] exc_invalid_op+0x1a/0x50 [ 8.053439][ T1] asm_exc_invalid_op+0x1a/0x20 [ 8.053439][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 8.053439][ T1] Code: b2 00 00 00 e8 e7 3e f2 fc 5b 5d c3 cc cc cc cc e8 db 3e f2 fc c6 05 d1 c3 ce 0a 01 90 48 c7 c7 60 57 fe 8b e8 37 bd b4 fc 90 <0f> 0b 90 90 eb d9 e8 bb 3e f2 fc c6 05 ae c3 ce 0a 01 90 48 c7 c7 [ 8.063386][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 8.063386][ T1] RAX: 66500b6c8a695200 RBX: ffff88814074d61c RCX: ffff8880166c8000 [ 8.063386][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 8.063386][ T1] RBP: 0000000000000004 R08: ffffffff8157ffe2 R09: fffffbfff1bf96e0 [ 8.063386][ T1] R10: dffffc0000000000 R11: fffffbfff1bf96e0 R12: ffffea000083fdc0 [ 8.063386][ T1] R13: ffffea000083fdc8 R14: 1ffffd4000107fb9 R15: 0000000000000000 [ 8.073474][ T1] ? __warn_printk+0x292/0x360 [ 8.073474][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 8.073474][ T1] __free_pages_ok+0xc54/0xd80 [ 8.073474][ T1] make_alloc_exact+0xa3/0xf0 [ 8.073474][ T1] vring_alloc_queue_split+0x20a/0x600 [ 8.073474][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 8.073474][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 8.073474][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 8.073474][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 8.073474][ T1] ? really_probe+0x2b8/0xad0 [ 8.073474][ T1] ? driver_probe_device+0x50/0x430 [ 8.083348][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 8.083348][ T1] ? ret_from_fork+0x4b/0x80 [ 8.083348][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 8.083348][ T1] vring_create_virtqueue+0xca/0x110 [ 8.083348][ T1] ? __pfx_vp_notify+0x10/0x10 [ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.083348][ T1] setup_vq+0xe9/0x2d0 [ 8.083348][ T1] ? __pfx_vp_notify+0x10/0x10 [ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.083348][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.083348][ T1] vp_setup_vq+0xbf/0x330 [ 8.093441][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 8.093441][ T1] ? ioread16+0x2f/0x90 [ 8.093441][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.093441][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 8.093441][ T1] vp_find_vqs+0x4c/0x4e0 [ 8.093441][ T1] virtscsi_init+0x8db/0xd00 [ 8.093441][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 8.093441][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 8.093441][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 8.093441][ T1] ? vp_get+0xfd/0x140 [ 8.093441][ T1] virtscsi_probe+0x3ea/0xf60 [ 8.103383][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 8.103383][ T1] ? vp_setup_vq+0x26d/0x330 [ 8.103383][ T1] ? __pfx_vp_set_status+0x10/0x10 [ 8.103383][ T1] ? vp_set_status+0x1a/0x40 [ 8.103383][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 8.103383][ T1] ? virtio_features_ok+0x10c/0x270 [ 8.103383][ T1] virtio_dev_probe+0x991/0xaf0 [ 8.103383][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 8.103383][ T1] really_probe+0x2b8/0xad0 [ 8.103383][ T1] __driver_probe_device+0x1a2/0x390 [ 8.113498][ T1] driver_probe_device+0x50/0x430 [ 8.113498][ T1] __driver_attach+0x45f/0x710 [ 8.113498][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.113498][ T1] bus_for_each_dev+0x239/0x2b0 [ 8.113498][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.113498][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 8.113498][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 8.113498][ T1] bus_add_driver+0x347/0x620 [ 8.113498][ T1] driver_register+0x23a/0x320 [ 8.113498][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.113498][ T1] virtio_scsi_init+0x65/0xe0 [ 8.123379][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.123379][ T1] do_one_initcall+0x248/0x880 [ 8.123379][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.123379][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.123379][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 8.123379][ T1] ? __pfx_parse_args+0x10/0x10 [ 8.123379][ T1] ? do_initcalls+0x1c/0x80 [ 8.123379][ T1] ? rcu_is_watching+0x15/0xb0 [ 8.123379][ T1] do_initcall_level+0x157/0x210 [ 8.123379][ T1] do_initcalls+0x3f/0x80 [ 8.123379][ T1] kernel_init_freeable+0x435/0x5d0 [ 8.133466][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 8.133466][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.133466][ T1] kernel_init+0x1d/0x2b0 [ 8.133466][ T1] ret_from_fork+0x4b/0x80 [ 8.133466][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.133466][ T1] ret_from_fork_asm+0x1a/0x30 [ 8.133466][ T1] </TASK> [ 8.133466][ T1] Kernel Offset: disabled [ 8.133466][ T1] Rebooting in 86400 seconds.. syzkaller build log: go env (err=<nil>) GO111MODULE='auto' GOARCH='amd64' GOBIN='' GOCACHE='/syzkaller/.cache/go-build' GOENV='/syzkaller/.config/go/env' GOEXE='' GOEXPERIMENT='' GOFLAGS='' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/usr/local/go' GOSUMDB='sum.golang.org' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.21.4' GCCGO='gccgo' GOAMD64='v1' AR='ar' CC='gcc' CXX='g++' CGO_ENABLED='1' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOWORK='' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' PKG_CONFIG='pkg-config' GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build543475362=/tmp/go-build -gno-record-gcc-switches' git status (err=<nil>) HEAD detached at 36c961ad9 nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=36c961ad9dc0e5b72efc784a57717424a02bfa00 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240422-084642'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=36c961ad9dc0e5b72efc784a57717424a02bfa00 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240422-084642'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=36c961ad9dc0e5b72efc784a57717424a02bfa00 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240422-084642'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress mkdir -p ./bin/linux_amd64 gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"36c961ad9dc0e5b72efc784a57717424a02bfa00\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=1241f68b180000 Tested on: commit: 5f5d424d f2fs: fix to do sanity check on i_xattr_nid i.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot kernel config: https://syzkaller.appspot.com/x/.config?x=1ace29459a0a1915 dashboard link: https://syzkaller.appspot.com/bug?extid=3694e283cf5c40df6d14 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.
