Extracting prog: 1m1.37093174s
Minimizing prog: 8m27.756116129s
Simplifying prog options: 0s
Extracting C: 41.912432804s
Simplifying C: 5m40.382479619s
extracting reproducer from 31 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(&(0x7f0000000200)=@filename='none\x00', &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(&(0x7f0000000200)=@filename='none\x00', &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(&(0x7f0000000200)=@filename='none\x00', &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-mkdir-rmdir
detailed listing:
executing program 0:
mount(&(0x7f0000000200)=@filename='none\x00', &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(0x0, 0x1ff)
mount(&(0x7f0000000200)=@filename='none\x00', &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./config\x00', 0x0, 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(0x0, 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program did not crash
testing program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=33.495292669s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
simplifying C reproducer
testing compiled C program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
testing compiled C program (duration=33.495292669s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program did not crash
testing compiled C program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program crashed: BUG: scheduling while atomic in kernfs_remove
a never seen crash title: BUG: scheduling while atomic in kernfs_remove, ignore
testing compiled C program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
testing compiled C program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program crashed: BUG: scheduling while atomic in kernfs_remove
a never seen crash title: BUG: scheduling while atomic in kernfs_remove, ignore
testing compiled C program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
testing compiled C program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
program crashed: BUG: scheduling while atomic in kernfs_drain
a never seen crash title: BUG: scheduling while atomic in kernfs_drain, ignore
testing program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
validation run: crashed=true
testing program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
validation run: crashed=true
testing program (duration=33.495292669s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mkdir-rmdir
detailed listing:
executing program 0:
mkdir(&(0x7f0000000100)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdir(&(0x7f0000000500)='./config/usb_gadget/g2\x00', 0x1ff)
rmdir(&(0x7f0000000600)='./config/usb_gadget/g2\x00')
program crashed: BUG: scheduling while atomic in kernfs_remove_by_name_ns
validation run: crashed=true
reproducing took 18m56.284640451s
repro crashed as (corrupted=false):
BUG: scheduling while atomic: syz.3.23/403/0x00000002
Modules linked in:
CPU: 0 UID: 0 PID: 403 Comm: syz.3.23 Not tainted syzkaller #0 7f3b23dcf55806c758f3cdeb9210fc77c27c120f
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
__schedule_bug+0x12b/0x200 kernel/sched/core.c:6626
schedule_debug kernel/sched/core.c:6653 [inline]
__schedule+0xb85/0x20b0 kernel/sched/core.c:7697
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8029
rwsem_down_write_slowpath+0x5c9/0x1b60 kernel/locking/rwsem.c:1239
__down_write_common kernel/locking/rwsem.c:1383 [inline]
__down_write kernel/locking/rwsem.c:1392 [inline]
down_write+0x163/0x2b0 kernel/locking/rwsem.c:1659
kernfs_remove_by_name_ns+0x8c/0x180 fs/kernfs/dir.c:1737
kernfs_remove_by_name include/linux/kernfs.h:637 [inline]
sysfs_unmerge_group+0xd7/0x130 fs/sysfs/group.c:399
rpm_sysfs_remove drivers/base/power/sysfs.c:826 [inline]
dpm_sysfs_remove+0x7b/0xd0 drivers/base/power/sysfs.c:835
device_del+0x241/0xcf0 drivers/base/core.c:3856
device_unregister drivers/base/core.c:3922 [inline]
device_destroy+0xb0/0x100 drivers/base/core.c:4521
android_device_destroy+0x118/0x180 drivers/usb/gadget/android_configfs_uevent.c:223
gadgets_drop+0x1d/0x30 drivers/usb/gadget/configfs.c:2075
client_drop_item fs/configfs/dir.c:943 [inline]
configfs_rmdir+0x8b7/0x9b0 fs/configfs/dir.c:1546
vfs_rmdir+0x3de/0x560 fs/namei.c:4348
do_rmdir+0x29a/0x590 fs/namei.c:4407
__do_sys_rmdir fs/namei.c:4426 [inline]
__se_sys_rmdir fs/namei.c:4424 [inline]
__x64_sys_rmdir+0x4b/0x60 fs/namei.c:4424
x64_sys_call+0xaf7/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:85
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f848b59e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd85661c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f848b825fa0 RCX: 00007f848b59e019
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000600
RBP: 00007f848b63500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f848b825fac R14: 00007f848b825fa0 R15: 00007f848b825fa0
BUG: scheduling while atomic: syz.3.23/403/0x00000000
kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
BUG: unable to handle page fault for address: ffff8881f6f4fc78
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0011) - permissions violation
PGD 8e01067 P4D 8e01067 PUD 10165b063 PMD 101660063 PTE 80000001f6f4f063
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 403 Comm: syz.3.23 Tainted: G W syzkaller #0 7f3b23dcf55806c758f3cdeb9210fc77c27c120f
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:page_fault_oops+0x82e/0x9d0 arch/x86/mm/fault.c:707
Code: 8b 1d 46 8a bf 7e 48 83 c3 20 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 1c d3 9a 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 03 d3 9a 00 48 8b 1b bf 9d 6e ac
RSP: 0018:ffffc90003adf240 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 68c4f158e8f59b00
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003adf3c8 R08: ffff8881f6f294d3 R09: 1ffff1103ede529a
R10: dffffc0000000000 R11: ffffed103ede529b R12: ffffc90003adf4f8
R13: 1ffff9200075be54 R14: dffffc0000000000 R15: ffff8881f6f4fc78
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8881f6f4fc78 CR3: 00000001150a6000 CR4: 00000000003526b0
Call Trace:
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:page_fault_oops+0x82e/0x9d0 arch/x86/mm/fault.c:707
Code: 8b 1d 46 8a bf 7e 48 83 c3 20 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 1c d3 9a 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 03 d3 9a 00 48 8b 1b bf 9d 6e ac
RSP: 0018:ffffc90003adf240 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 68c4f158e8f59b00
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003adf3c8 R08: ffff8881f6f294d3 R09: 1ffff1103ede529a
R10: dffffc0000000000 R11: ffffed103ede529b R12: ffffc90003adf4f8
R13: 1ffff9200075be54 R14: dffffc0000000000 R15: ffff8881f6f4fc78
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8881f6f4fc78 CR3: 00000001150a6000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: 8b 1d 46 8a bf 7e mov 0x7ebf8a46(%rip),%ebx # 0x7ebf8a4c
6: 48 83 c3 20 add $0x20,%rbx
a: 48 89 d8 mov %rbx,%rax
d: 48 c1 e8 03 shr $0x3,%rax
11: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1)
16: 74 08 je 0x20
18: 48 89 df mov %rbx,%rdi
1b: e8 1c d3 9a 00 call 0x9ad33c
20: 48 8b 1b mov (%rbx),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 03 d3 9a 00 call 0x9ad33c
39: 48 8b 1b mov (%rbx),%rbx
3c: bf .byte 0xbf
3d: 9d popf
3e: 6e outsb %ds:(%rsi),(%dx)
3f: ac lods %ds:(%rsi),%al
final repro crashed as (corrupted=false):
BUG: scheduling while atomic: syz.3.23/403/0x00000002
Modules linked in:
CPU: 0 UID: 0 PID: 403 Comm: syz.3.23 Not tainted syzkaller #0 7f3b23dcf55806c758f3cdeb9210fc77c27c120f
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
__schedule_bug+0x12b/0x200 kernel/sched/core.c:6626
schedule_debug kernel/sched/core.c:6653 [inline]
__schedule+0xb85/0x20b0 kernel/sched/core.c:7697
__schedule_loop kernel/sched/core.c:7957 [inline]
schedule+0xc5/0x240 kernel/sched/core.c:7972
schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8029
rwsem_down_write_slowpath+0x5c9/0x1b60 kernel/locking/rwsem.c:1239
__down_write_common kernel/locking/rwsem.c:1383 [inline]
__down_write kernel/locking/rwsem.c:1392 [inline]
down_write+0x163/0x2b0 kernel/locking/rwsem.c:1659
kernfs_remove_by_name_ns+0x8c/0x180 fs/kernfs/dir.c:1737
kernfs_remove_by_name include/linux/kernfs.h:637 [inline]
sysfs_unmerge_group+0xd7/0x130 fs/sysfs/group.c:399
rpm_sysfs_remove drivers/base/power/sysfs.c:826 [inline]
dpm_sysfs_remove+0x7b/0xd0 drivers/base/power/sysfs.c:835
device_del+0x241/0xcf0 drivers/base/core.c:3856
device_unregister drivers/base/core.c:3922 [inline]
device_destroy+0xb0/0x100 drivers/base/core.c:4521
android_device_destroy+0x118/0x180 drivers/usb/gadget/android_configfs_uevent.c:223
gadgets_drop+0x1d/0x30 drivers/usb/gadget/configfs.c:2075
client_drop_item fs/configfs/dir.c:943 [inline]
configfs_rmdir+0x8b7/0x9b0 fs/configfs/dir.c:1546
vfs_rmdir+0x3de/0x560 fs/namei.c:4348
do_rmdir+0x29a/0x590 fs/namei.c:4407
__do_sys_rmdir fs/namei.c:4426 [inline]
__se_sys_rmdir fs/namei.c:4424 [inline]
__x64_sys_rmdir+0x4b/0x60 fs/namei.c:4424
x64_sys_call+0xaf7/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:85
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f848b59e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd85661c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f848b825fa0 RCX: 00007f848b59e019
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000600
RBP: 00007f848b63500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f848b825fac R14: 00007f848b825fa0 R15: 00007f848b825fa0
BUG: scheduling while atomic: syz.3.23/403/0x00000000
kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
BUG: unable to handle page fault for address: ffff8881f6f4fc78
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0011) - permissions violation
PGD 8e01067 P4D 8e01067 PUD 10165b063 PMD 101660063 PTE 80000001f6f4f063
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 403 Comm: syz.3.23 Tainted: G W syzkaller #0 7f3b23dcf55806c758f3cdeb9210fc77c27c120f
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:page_fault_oops+0x82e/0x9d0 arch/x86/mm/fault.c:707
Code: 8b 1d 46 8a bf 7e 48 83 c3 20 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 1c d3 9a 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 03 d3 9a 00 48 8b 1b bf 9d 6e ac
RSP: 0018:ffffc90003adf240 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 68c4f158e8f59b00
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003adf3c8 R08: ffff8881f6f294d3 R09: 1ffff1103ede529a
R10: dffffc0000000000 R11: ffffed103ede529b R12: ffffc90003adf4f8
R13: 1ffff9200075be54 R14: dffffc0000000000 R15: ffff8881f6f4fc78
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8881f6f4fc78 CR3: 00000001150a6000 CR4: 00000000003526b0
Call Trace:
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:page_fault_oops+0x82e/0x9d0 arch/x86/mm/fault.c:707
Code: 8b 1d 46 8a bf 7e 48 83 c3 20 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 1c d3 9a 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 03 d3 9a 00 48 8b 1b bf 9d 6e ac
RSP: 0018:ffffc90003adf240 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 68c4f158e8f59b00
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003adf3c8 R08: ffff8881f6f294d3 R09: 1ffff1103ede529a
R10: dffffc0000000000 R11: ffffed103ede529b R12: ffffc90003adf4f8
R13: 1ffff9200075be54 R14: dffffc0000000000 R15: ffff8881f6f4fc78
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8881f6f4fc78 CR3: 00000001150a6000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: 8b 1d 46 8a bf 7e mov 0x7ebf8a46(%rip),%ebx # 0x7ebf8a4c
6: 48 83 c3 20 add $0x20,%rbx
a: 48 89 d8 mov %rbx,%rax
d: 48 c1 e8 03 shr $0x3,%rax
11: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1)
16: 74 08 je 0x20
18: 48 89 df mov %rbx,%rdi
1b: e8 1c d3 9a 00 call 0x9ad33c
20: 48 8b 1b mov (%rbx),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 03 d3 9a 00 call 0x9ad33c
39: 48 8b 1b mov (%rbx),%rbx
3c: bf .byte 0xbf
3d: 9d popf
3e: 6e outsb %ds:(%rsi),(%dx)
3f: ac lods %ds:(%rsi),%al