Re: [syzbot] [afs?] BUG: sleeping function called from invalid context in __alloc_frozen_pages_noprof
From: syzbot
Date: Sat Mar 29 2025 - 01:51:16 EST
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
mode
[ 69.518774][ T5887] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 69.531611][ T5887] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 69.542159][ T5887] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 69.551960][ T5887] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 69.560878][ T5887] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 69.570005][ T5887] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 69.691353][ T5887] syz-executor (5887) used greatest stack depth: 19616 bytes left
[ 69.711047][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 69.775907][ T13] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 69.840598][ T13] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 69.898295][ T13] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 70.157572][ T5919] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 70.166420][ T5919] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 70.174104][ T5919] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 70.183110][ T5919] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 70.192891][ T5919] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
2025/03/29 05:50:44 executed programs: 0
[ 70.660061][ T5919] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 70.669464][ T5919] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 70.678754][ T5919] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 70.687373][ T5919] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 70.695598][ T5919] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 70.785794][ T5933] chnl_net:caif_netlink_parms(): no params data found
[ 70.828056][ T5933] bridge0: port 1(bridge_slave_0) entered blocking state
[ 70.835717][ T5933] bridge0: port 1(bridge_slave_0) entered disabled state
[ 70.842920][ T5933] bridge_slave_0: entered allmulticast mode
[ 70.850250][ T5933] bridge_slave_0: entered promiscuous mode
[ 70.858138][ T5933] bridge0: port 2(bridge_slave_1) entered blocking state
[ 70.866441][ T5933] bridge0: port 2(bridge_slave_1) entered disabled state
[ 70.873655][ T5933] bridge_slave_1: entered allmulticast mode
[ 70.880415][ T5933] bridge_slave_1: entered promiscuous mode
[ 70.910123][ T5933] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 70.921677][ T5933] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 70.946174][ T5933] team0: Port device team_slave_0 added
[ 70.955650][ T5933] team0: Port device team_slave_1 added
[ 70.972195][ T5933] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 70.979290][ T5933] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 71.005779][ T5933] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 71.018566][ T5933] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 71.025719][ T5933] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 71.052143][ T5933] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 71.084918][ T5933] hsr_slave_0: entered promiscuous mode
[ 71.091172][ T5933] hsr_slave_1: entered promiscuous mode
[ 71.097607][ T5933] debugfs: Directory 'hsr0' with parent 'hsr' already present!
[ 71.105530][ T5933] Cannot create hsr debugfs directory
[ 71.467764][ T1299] ieee802154 phy0 wpan0: encryption failed: -22
[ 71.474219][ T1299] ieee802154 phy1 wpan1: encryption failed: -22
[ 72.755330][ T5137] Bluetooth: hci0: command tx timeout
[ 73.078740][ T13] bridge_slave_1: left allmulticast mode
[ 73.087005][ T13] bridge_slave_1: left promiscuous mode
[ 73.094074][ T13] bridge0: port 2(bridge_slave_1) entered disabled state
[ 73.105207][ T13] bridge_slave_0: left allmulticast mode
[ 73.110923][ T13] bridge_slave_0: left promiscuous mode
[ 73.117589][ T13] bridge0: port 1(bridge_slave_0) entered disabled state
[ 73.292536][ T13] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[ 73.303595][ T13] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[ 73.316478][ T13] bond0 (unregistering): Released all slaves
[ 73.414239][ T13] hsr_slave_0: left promiscuous mode
[ 73.424392][ T13] hsr_slave_1: left promiscuous mode
[ 73.430886][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[ 73.442780][ T13] batman_adv: batadv0: Removing interface: batadv_slave_0
[ 73.451616][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[ 73.460757][ T13] batman_adv: batadv0: Removing interface: batadv_slave_1
[ 73.477508][ T13] veth1_macvtap: left promiscuous mode
[ 73.483334][ T13] veth0_macvtap: left promiscuous mode
[ 73.489387][ T13] veth1_vlan: left promiscuous mode
[ 73.496421][ T13] veth0_vlan: left promiscuous mode
[ 73.767218][ T13] team0 (unregistering): Port device team_slave_1 removed
[ 73.792742][ T13] team0 (unregistering): Port device team_slave_0 removed
[ 74.013067][ T5491]
[ 74.015514][ T5491] ============================================
[ 74.021675][ T5491] WARNING: possible recursive locking detected
[ 74.027830][ T5491] 6.14.0-syzkaller-09584-g7d06015d936c-dirty #0 Not tainted
[ 74.035096][ T5491] --------------------------------------------
[ 74.041229][ T5491] dhcpcd/5491 is trying to acquire lock:
[ 74.046854][ T5491] ffff88807edb8d28 (&dev->lock){+.+.}-{4:4}, at: lapbeth_device_event+0x766/0xa20
[ 74.056138][ T5491]
[ 74.056138][ T5491] but task is already holding lock:
[ 74.064028][ T5491] ffff888069be8d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270
[ 74.072906][ T5491]
[ 74.072906][ T5491] other info that might help us debug this:
[ 74.080951][ T5491] Possible unsafe locking scenario:
[ 74.080951][ T5491]
[ 74.088384][ T5491] CPU0
[ 74.091676][ T5491] ----
[ 74.094943][ T5491] lock(&dev->lock);
[ 74.098914][ T5491] lock(&dev->lock);
[ 74.102886][ T5491]
[ 74.102886][ T5491] *** DEADLOCK ***
[ 74.102886][ T5491]
[ 74.111023][ T5491] May be due to missing lock nesting notation
[ 74.111023][ T5491]
[ 74.119346][ T5491] 2 locks held by dhcpcd/5491:
[ 74.124095][ T5491] #0: ffffffff900d3988 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x34e/0x1d80
[ 74.133367][ T5491] #1: ffff888069be8d28 (&dev->lock){+.+.}-{4:4}, at: dev_change_flags+0x120/0x270
[ 74.142678][ T5491]
[ 74.142678][ T5491] stack backtrace:
[ 74.148570][ T5491] CPU: 1 UID: 0 PID: 5491 Comm: dhcpcd Not tainted 6.14.0-syzkaller-09584-g7d06015d936c-dirty #0 PREEMPT(full)
[ 74.148586][ T5491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 74.148597][ T5491] Call Trace:
[ 74.148603][ T5491] <TASK>
[ 74.148609][ T5491] dump_stack_lvl+0x241/0x360
[ 74.148627][ T5491] ? __pfx_dump_stack_lvl+0x10/0x10
[ 74.148641][ T5491] ? __pfx__printk+0x10/0x10
[ 74.148656][ T5491] ? print_lock+0x171/0x1a0
[ 74.148668][ T5491] print_deadlock_bug+0x2be/0x2d0
[ 74.148681][ T5491] validate_chain+0x928/0x24e0
[ 74.148693][ T5491] ? stack_depot_save_flags+0x3a/0x970
[ 74.148711][ T5491] ? look_up_lock_class+0x7b/0x170
[ 74.148723][ T5491] ? register_lock_class+0x54/0x330
[ 74.148740][ T5491] __lock_acquire+0xad5/0xd80
[ 74.148757][ T5491] lock_acquire+0x116/0x2f0
[ 74.148772][ T5491] ? lapbeth_device_event+0x766/0xa20
[ 74.148788][ T5491] __mutex_lock+0x1a5/0x10c0
[ 74.148799][ T5491] ? lapbeth_device_event+0x766/0xa20
[ 74.148812][ T5491] ? ref_tracker_alloc+0x316/0x4c0
[ 74.148829][ T5491] ? lapbeth_device_event+0x766/0xa20
[ 74.148840][ T5491] ? rcu_is_watching+0x15/0xb0
[ 74.148852][ T5491] ? __pfx___mutex_lock+0x10/0x10
[ 74.148866][ T5491] ? __raw_spin_lock_init+0x45/0x100
[ 74.148880][ T5491] lapbeth_device_event+0x766/0xa20
[ 74.148893][ T5491] notifier_call_chain+0x1a5/0x3f0
[ 74.148907][ T5491] __dev_notify_flags+0x209/0x410
[ 74.148923][ T5491] ? __pfx___dev_notify_flags+0x10/0x10
[ 74.148935][ T5491] ? __dev_change_flags+0x517/0x700
[ 74.148949][ T5491] ? __pfx___mutex_lock+0x10/0x10
[ 74.148960][ T5491] ? __pfx___dev_change_flags+0x10/0x10
[ 74.148975][ T5491] ? __pfx___mutex_lock+0x10/0x10
[ 74.148986][ T5491] netif_change_flags+0xf0/0x1a0
[ 74.149000][ T5491] dev_change_flags+0x146/0x270
[ 74.149015][ T5491] devinet_ioctl+0xea4/0x1d80
[ 74.149030][ T5491] ? __pfx_devinet_ioctl+0x10/0x10
[ 74.149042][ T5491] ? get_user_ifreq+0x1bb/0x200
[ 74.149058][ T5491] inet_ioctl+0x3d9/0x4f0
[ 74.149073][ T5491] ? __pfx_inet_ioctl+0x10/0x10
[ 74.149087][ T5491] ? lockdep_hardirqs_on+0x9d/0x150
[ 74.149109][ T5491] ? tomoyo_path_number_perm+0x215/0x790
[ 74.149122][ T5491] sock_do_ioctl+0x15a/0x490
[ 74.149134][ T5491] ? __pfx_sock_do_ioctl+0x10/0x10
[ 74.149146][ T5491] ? fd_install+0x9c/0x4c0
[ 74.149159][ T5491] ? __asan_memset+0x23/0x50
[ 74.149173][ T5491] ? smack_file_ioctl+0x2a7/0x3b0
[ 74.149186][ T5491] sock_ioctl+0x644/0x900
[ 74.149202][ T5491] ? __pfx_sock_ioctl+0x10/0x10
[ 74.149218][ T5491] ? __sys_socket+0x209/0x3c0
[ 74.149231][ T5491] ? __pfx_sock_ioctl+0x10/0x10
[ 74.149248][ T5491] __se_sys_ioctl+0xf1/0x160
[ 74.149265][ T5491] do_syscall_64+0xf3/0x230
[ 74.149276][ T5491] ? clear_bhb_loop+0x45/0xa0
[ 74.149289][ T5491] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 74.149303][ T5491] RIP: 0033:0x7ffb21c81d49
[ 74.149318][ T5491] Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8
[ 74.149328][ T5491] RSP: 002b:00007ffe55611008 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 74.149341][ T5491] RAX: ffffffffffffffda RBX: 00007ffb21bb36c0 RCX: 00007ffb21c81d49
[ 74.149350][ T5491] RDX: 00007ffe556211f8 RSI: 0000000000008914 RDI: 000000000000000e
[ 74.149358][ T5491] RBP: 00007ffe556313b8 R08: 00007ffe556211b8 R09: 00007ffe55621168
[ 74.149366][ T5491] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 74.149374][ T5491] R13: 00007ffe556211f8 R14: 0000000000000028 R15: 0000000000008914
[ 74.149385][ T5491] </TASK>
[ 74.714069][ T5933] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 74.724023][ T5933] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 74.733084][ T5933] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 74.748582][ T5933] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 74.796465][ T5933] 8021q: adding VLAN 0 to HW filter on device bond0
[ 74.810222][ T5933] 8021q: adding VLAN 0 to HW filter on device team0
[ 74.821065][ T78] bridge0: port 1(bridge_slave_0) entered blocking state
[ 74.828458][ T78] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 74.838471][ T5137] Bluetooth: hci0: command tx timeout
[ 74.847260][ T1079] bridge0: port 2(bridge_slave_1) entered blocking state
[ 74.854495][ T1079] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 74.983183][ T5933] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 75.017511][ T5933] veth0_vlan: entered promiscuous mode
[ 75.027982][ T5933] veth1_vlan: entered promiscuous mode
[ 75.051472][ T5933] veth0_macvtap: entered promiscuous mode
[ 75.060843][ T5933] veth1_macvtap: entered promiscuous mode
[ 75.078135][ T5933] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 75.091091][ T5933] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 75.102457][ T5933] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 75.111555][ T5933] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 75.122011][ T5933] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 75.131879][ T5933] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 75.163469][ T5933] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht'
[ 75.183636][ T36] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 75.193456][ T5933] ieee80211 phy6: Selected rate control algorithm 'minstrel_ht'
[ 75.202887][ T36] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 75.224644][ T1079] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 75.232795][ T1079] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
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='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.23.6'
GODEBUG=''
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
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-build1160221299=/tmp/go-build -gno-record-gcc-switches'
git status (err=<nil>)
HEAD detached at 875573af37b
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=875573af37b09758ab48042f2b8a368097204888 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250323-222138'" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -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 -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"875573af37b09758ab48042f2b8a368097204888\"
/usr/bin/ld: /tmp/cc8wE2TU.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=1357064c580000
Tested on:
commit: 7d06015d Merge tag 'pci-v6.15-changes' of git://git.ke..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=6f5a67fe881fabe4
dashboard link: https://syzkaller.appspot.com/bug?extid=3b6c5c6a1d0119b687a1
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=12c6bbb0580000