Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Write in hci_conn_drop (2)
From: syzbot
Date: Sat Feb 17 2024 - 06:23:15 EST
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
st device registered (name=vmci, major=10, minor=118)
[ 7.646156][ T1] Initialized host personality
[ 7.647936][ T1] usbcore: registered new interface driver rtsx_usb
[ 7.649988][ T1] usbcore: registered new interface driver viperboard
[ 7.651838][ T1] usbcore: registered new interface driver dln2
[ 7.653834][ T1] usbcore: registered new interface driver pn533_usb
[ 7.664347][ T1] nfcsim 0.2 initialized
[ 7.665691][ T1] usbcore: registered new interface driver port100
[ 7.668533][ T1] usbcore: registered new interface driver nfcmrvl
[ 7.675630][ T1] Loading iSCSI transport class v2.0-870.
[ 7.698216][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues
[ 7.709913][ T1] ------------[ cut here ]------------
[ 7.711179][ T1] refcount_t: decrement hit 0; leaking memory.
[ 7.712836][ T1] WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0
[ 7.715358][ T1] Modules linked in:
[ 7.716481][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc4-next-20240216-syzkaller-07658-gd37e1e4c52bc-dirty #0
[ 7.719681][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 7.722153][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[ 7.723825][ T1] Code: b2 00 00 00 e8 b7 94 f0 fc 5b 5d c3 cc cc cc cc e8 ab 94 f0 fc c6 05 c6 16 ce 0a 01 90 48 c7 c7 a0 5a fe 8b e8 67 69 b4 fc 90 <0f> 0b 90 90 eb d9 e8 8b 94 f0 fc c6 05 a3 16 ce 0a 01 90 48 c7 c7
[ 7.728144][ T1] RSP: 0000:ffffc90000066e10 EFLAGS: 00010246
[ 7.729780][ T1] RAX: ca34bf339345e800 RBX: ffff888020eb0f4c RCX: ffff8880162d8000
[ 7.731521][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 7.733264][ T1] RBP: 0000000000000004 R08: ffffffff8157b942 R09: fffffbfff1bf95cc
[ 7.735392][ T1] R10: dffffc0000000000 R11: fffffbfff1bf95cc R12: ffffea000502ddc0
[ 7.737235][ T1] R13: ffffea000502ddc8 R14: 1ffffd4000a05bb9 R15: 0000000000000000
[ 7.738734][ T1] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
[ 7.741305][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.742963][ T1] CR2: ffff88823ffff000 CR3: 000000000df32000 CR4: 00000000003506f0
[ 7.744872][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7.746542][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7.749418][ T1] Call Trace:
[ 7.750267][ T1] <TASK>
[ 7.750946][ T1] ? __warn+0x163/0x4b0
[ 7.751918][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.752945][ T1] ? report_bug+0x2b3/0x500
[ 7.754131][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.755275][ T1] ? handle_bug+0x3e/0x70
[ 7.756610][ T1] ? exc_invalid_op+0x1a/0x50
[ 7.757756][ T1] ? asm_exc_invalid_op+0x1a/0x20
[ 7.759043][ T1] ? __warn_printk+0x292/0x360
[ 7.760038][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.761095][ T1] __free_pages_ok+0xc42/0xd70
[ 7.761887][ T1] make_alloc_exact+0xc4/0x140
[ 7.762733][ T1] vring_alloc_queue_split+0x20a/0x600
[ 7.763909][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10
[ 7.765171][ T1] ? vp_find_vqs+0x4c/0x4e0
[ 7.765822][ T1] ? virtscsi_probe+0x3ea/0xf60
[ 7.766497][ T1] ? virtio_dev_probe+0x991/0xaf0
[ 7.767234][ T1] ? really_probe+0x29e/0xc50
[ 7.767992][ T1] ? driver_probe_device+0x50/0x430
[ 7.769193][ T1] vring_create_virtqueue_split+0xc6/0x310
[ 7.770403][ T1] ? ret_from_fork+0x4b/0x80
[ 7.771350][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10
[ 7.772638][ T1] vring_create_virtqueue+0xca/0x110
[ 7.773683][ T1] ? __pfx_vp_notify+0x10/0x10
[ 7.774585][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.775665][ T1] setup_vq+0xe9/0x2d0
[ 7.776917][ T1] ? __pfx_vp_notify+0x10/0x10
[ 7.778204][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.779467][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.781403][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.782743][ T1] vp_setup_vq+0xbf/0x330
[ 7.783647][ T1] ? __pfx_vp_config_changed+0x10/0x10
[ 7.784936][ T1] ? ioread16+0x2f/0x90
[ 7.785529][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.786299][ T1] vp_find_vqs_msix+0x8b2/0xc80
[ 7.787023][ T1] vp_find_vqs+0x4c/0x4e0
[ 7.788532][ T1] virtscsi_init+0x8db/0xd00
[ 7.790004][ T1] ? __pfx_virtscsi_init+0x10/0x10
[ 7.790970][ T1] ? __pfx_default_calc_sets+0x10/0x10
[ 7.792125][ T1] ? scsi_host_alloc+0xa57/0xea0
[ 7.793057][ T1] ? vp_get+0xfd/0x140
[ 7.793938][ T1] virtscsi_probe+0x3ea/0xf60
[ 7.794992][ T1] ? __pfx_virtscsi_probe+0x10/0x10
[ 7.795946][ T1] ? kernfs_add_one+0x156/0x8b0
[ 7.796940][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10
[ 7.798029][ T1] ? virtio_features_ok+0x10c/0x270
[ 7.799045][ T1] virtio_dev_probe+0x991/0xaf0
[ 7.800155][ T1] ? __pfx_virtio_dev_probe+0x10/0x10
[ 7.801103][ T1] really_probe+0x29e/0xc50
[ 7.802608][ T1] __driver_probe_device+0x1a2/0x3e0
[ 7.803793][ T1] driver_probe_device+0x50/0x430
[ 7.804857][ T1] __driver_attach+0x45f/0x710
[ 7.805550][ T1] ? __pfx___driver_attach+0x10/0x10
[ 7.806333][ T1] bus_for_each_dev+0x239/0x2b0
[ 7.807759][ T1] ? __pfx___driver_attach+0x10/0x10
[ 7.808888][ T1] ? __pfx_bus_for_each_dev+0x10/0x10
[ 7.809993][ T1] ? do_raw_spin_unlock+0x13c/0x8b0
[ 7.811278][ T1] bus_add_driver+0x347/0x620
[ 7.812206][ T1] driver_register+0x23a/0x320
[ 7.813748][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 7.815079][ T1] virtio_scsi_init+0x65/0xe0
[ 7.816135][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 7.817203][ T1] do_one_initcall+0x238/0x830
[ 7.818686][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 7.819999][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 7.821171][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 7.822983][ T1] ? __pfx_parse_args+0x10/0x10
[ 7.823803][ T1] ? do_initcalls+0x1c/0x80
[ 7.825039][ T1] ? rcu_is_watching+0x15/0xb0
[ 7.825767][ T1] do_initcall_level+0x157/0x210
[ 7.827178][ T1] do_initcalls+0x3f/0x80
[ 7.828780][ T1] kernel_init_freeable+0x435/0x5d0
[ 7.829898][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 7.831154][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 7.833103][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.834732][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.835783][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.836738][ T1] kernel_init+0x1d/0x2b0
[ 7.837904][ T1] ret_from_fork+0x4b/0x80
[ 7.838532][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.839490][ T1] ret_from_fork_asm+0x1a/0x30
[ 7.840865][ T1] </TASK>
[ 7.842221][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 7.844095][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc4-next-20240216-syzkaller-07658-gd37e1e4c52bc-dirty #0
[ 7.844711][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 7.844711][ T1] Call Trace:
[ 7.844711][ T1] <TASK>
[ 7.844711][ T1] dump_stack_lvl+0x241/0x360
[ 7.844711][ T1] ? __pfx_dump_stack_lvl+0x10/0x10
[ 7.844711][ T1] ? __pfx__printk+0x10/0x10
[ 7.844711][ T1] ? _printk+0xd5/0x120
[ 7.844711][ T1] ? vscnprintf+0x5d/0x90
[ 7.844711][ T1] panic+0x349/0x860
[ 7.844711][ T1] ? __warn+0x172/0x4b0
[ 7.844711][ T1] ? __pfx_panic+0x10/0x10
[ 7.844711][ T1] ? show_trace_log_lvl+0x4e6/0x520
[ 7.844711][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 7.844711][ T1] __warn+0x31e/0x4b0
[ 7.844711][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.844711][ T1] report_bug+0x2b3/0x500
[ 7.844711][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 7.844711][ T1] handle_bug+0x3e/0x70
[ 7.844711][ T1] exc_invalid_op+0x1a/0x50
[ 7.844711][ T1] asm_exc_invalid_op+0x1a/0x20
[ 7.844711][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[ 7.844711][ T1] Code: b2 00 00 00 e8 b7 94 f0 fc 5b 5d c3 cc cc cc cc e8 ab 94 f0 fc c6 05 c6 16 ce 0a 01 90 48 c7 c7 a0 5a fe 8b e8 67 69 b4 fc 90 <0f> 0b 90 90 eb d9 e8 8b 94 f0 fc c6 05 a3 16 ce 0a 01 90 48 c7 c7
[ 7.844711][ T1] RSP: 0000:ffffc90000066e10 EFLAGS: 00010246
[ 7.844711][ T1] RAX: ca34bf339345e800 RBX: ffff888020eb0f4c RCX: ffff8880162d8000
[ 7.844711][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 7.844711][ T1] RBP: 0000000000000004 R08: ffffffff8157b942 R09: fffffbfff1bf95cc
[ 7.844711][ T1] R10: dffffc0000000000 R11: fffffbfff1bf95cc R12: ffffea000502ddc0
[ 7.844711][ T1] R13: ffffea000502ddc8 R14: 1ffffd4000a05bb9 R15: 0000000000000000
[ 7.844711][ T1] ? __warn_printk+0x292/0x360
[ 7.844711][ T1] __free_pages_ok+0xc42/0xd70
[ 7.844711][ T1] make_alloc_exact+0xc4/0x140
[ 7.844711][ T1] vring_alloc_queue_split+0x20a/0x600
[ 7.844711][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10
[ 7.844711][ T1] ? vp_find_vqs+0x4c/0x4e0
[ 7.844711][ T1] ? virtscsi_probe+0x3ea/0xf60
[ 7.844711][ T1] ? virtio_dev_probe+0x991/0xaf0
[ 7.844711][ T1] ? really_probe+0x29e/0xc50
[ 7.844711][ T1] ? driver_probe_device+0x50/0x430
[ 7.844711][ T1] vring_create_virtqueue_split+0xc6/0x310
[ 7.844711][ T1] ? ret_from_fork+0x4b/0x80
[ 7.844711][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10
[ 7.844711][ T1] vring_create_virtqueue+0xca/0x110
[ 7.844711][ T1] ? __pfx_vp_notify+0x10/0x10
[ 7.894210][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.894210][ T1] setup_vq+0xe9/0x2d0
[ 7.894210][ T1] ? __pfx_vp_notify+0x10/0x10
[ 7.894210][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.894210][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.894210][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.894210][ T1] vp_setup_vq+0xbf/0x330
[ 7.894210][ T1] ? __pfx_vp_config_changed+0x10/0x10
[ 7.894210][ T1] ? ioread16+0x2f/0x90
[ 7.894210][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 7.894210][ T1] vp_find_vqs_msix+0x8b2/0xc80
[ 7.894210][ T1] vp_find_vqs+0x4c/0x4e0
[ 7.894210][ T1] virtscsi_init+0x8db/0xd00
[ 7.894210][ T1] ? __pfx_virtscsi_init+0x10/0x10
[ 7.894210][ T1] ? __pfx_default_calc_sets+0x10/0x10
[ 7.894210][ T1] ? scsi_host_alloc+0xa57/0xea0
[ 7.894210][ T1] ? vp_get+0xfd/0x140
[ 7.894210][ T1] virtscsi_probe+0x3ea/0xf60
[ 7.894210][ T1] ? __pfx_virtscsi_probe+0x10/0x10
[ 7.894210][ T1] ? kernfs_add_one+0x156/0x8b0
[ 7.894210][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10
[ 7.894210][ T1] ? virtio_features_ok+0x10c/0x270
[ 7.894210][ T1] virtio_dev_probe+0x991/0xaf0
[ 7.894210][ T1] ? __pfx_virtio_dev_probe+0x10/0x10
[ 7.894210][ T1] really_probe+0x29e/0xc50
[ 7.894210][ T1] __driver_probe_device+0x1a2/0x3e0
[ 7.894210][ T1] driver_probe_device+0x50/0x430
[ 7.894210][ T1] __driver_attach+0x45f/0x710
[ 7.894210][ T1] ? __pfx___driver_attach+0x10/0x10
[ 7.894210][ T1] bus_for_each_dev+0x239/0x2b0
[ 7.894210][ T1] ? __pfx___driver_attach+0x10/0x10
[ 7.894210][ T1] ? __pfx_bus_for_each_dev+0x10/0x10
[ 7.894210][ T1] ? do_raw_spin_unlock+0x13c/0x8b0
[ 7.894210][ T1] bus_add_driver+0x347/0x620
[ 7.894210][ T1] driver_register+0x23a/0x320
[ 7.894210][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 7.894210][ T1] virtio_scsi_init+0x65/0xe0
[ 7.894210][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 7.894210][ T1] do_one_initcall+0x238/0x830
[ 7.894210][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 7.894210][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 7.894210][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 7.894210][ T1] ? __pfx_parse_args+0x10/0x10
[ 7.894210][ T1] ? do_initcalls+0x1c/0x80
[ 7.894210][ T1] ? rcu_is_watching+0x15/0xb0
[ 7.894210][ T1] do_initcall_level+0x157/0x210
[ 7.894210][ T1] do_initcalls+0x3f/0x80
[ 7.894210][ T1] kernel_init_freeable+0x435/0x5d0
[ 7.894210][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 7.894210][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 7.894210][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.894210][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.894210][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.894210][ T1] kernel_init+0x1d/0x2b0
[ 7.894210][ T1] ret_from_fork+0x4b/0x80
[ 7.894210][ T1] ? __pfx_kernel_init+0x10/0x10
[ 7.894210][ T1] ret_from_fork_asm+0x1a/0x30
[ 7.894210][ T1] </TASK>
[ 7.894210][ T1] Kernel Offset: disabled
[ 7.894210][ 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/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/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/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-build2616846364=/tmp/go-build -gno-record-gcc-switches'
git status (err=<nil>)
HEAD detached at 578f75388
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:32: run command via tools/syz-env for best compatibility, see:
Makefile:33: 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
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=578f753887693e1375d17cf79dc1c575f6032a5d -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240215-140143'" "-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=578f753887693e1375d17cf79dc1c575f6032a5d -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240215-140143'" "-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=578f753887693e1375d17cf79dc1c575f6032a5d -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240215-140143'" "-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=\"578f753887693e1375d17cf79dc1c575f6032a5d\"
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=10615fc8180000
Tested on:
commit: d37e1e4c Add linux-next specific files for 20240216
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
kernel config: https://syzkaller.appspot.com/x/.config?x=4bc446d42a7d56c0
dashboard link: https://syzkaller.appspot.com/bug?extid=1683f76f1b20b826de67
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=13dd25d0180000