Extracting prog: 1m15.059865554s
Minimizing prog: 5m0.339490881s
Simplifying prog options: 2m39.703453837s
Extracting C: 27.322341528s
Simplifying C: 0s
extracting reproducer from 1 programs
testing a last program of every proc
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: WARNING: ODEBUG bug in vub300_disconnect
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io$uac3
detailed listing:
executing program 0:
syz_usb_control_io$uac3(0xffffffffffffffff, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0})
program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, 0x0, 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, 0x0) (rerun: 64)
program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
extracting C reproducer
testing compiled C 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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
program crashed: BUG: sleeping function called from invalid context in cancel_delayed_work_sync
a never seen crash title: BUG: sleeping function called from invalid context in cancel_delayed_work_sync, ignore
simplifying guilty program options
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: WARNING: ODEBUG bug in vub300_disconnect
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
program crashed: BUG: sleeping function called from invalid context in cancel_delayed_work_sync
a never seen crash title: BUG: sleeping function called from invalid context in cancel_delayed_work_sync, ignore
testing program (duration=30s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program did not crash
testing program (duration=30s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: BUG: sleeping function called from invalid context in cancel_delayed_work_sync
a never seen crash title: BUG: sleeping function called from invalid context in cancel_delayed_work_sync, ignore
testing program (duration=30s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: WARNING: ODEBUG bug in vub300_disconnect
validation run: crashed=true
testing program (duration=30s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: WARNING: ODEBUG bug in vub300_disconnect
validation run: crashed=true
testing program (duration=30s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io$uac3
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x40, &(0x7f0000000000)=ANY=[@ANYBLOB="120100020000004024042c0100000000000109022e0001010080320904000004ffffff0007058102000200070502020002000705830200020007050402"], 0x0)
syz_usb_control_io$uac3(r0, 0x0, &(0x7f0000000340)={0x44, &(0x7f0000000100)=ANY=[@ANYBLOB="000e0f000000cf0d41aa3a9e44cc405fa2aca198d9"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) (rerun: 64)
program crashed: WARNING: ODEBUG bug in vub300_disconnect
validation run: crashed=true
reproducing took 11m9.135083128s
repro crashed as (corrupted=false):
------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff8880554d1270 object type: timer_list hint: vub300_inactivity_timer_expired+0x0/0x550 drivers/mmc/host/vub300.c:1447
WARNING: lib/debugobjects.c:629 at debug_print_object+0x198/0x2b0 lib/debugobjects.c:629, CPU#0: kworker/0:3/1347
Modules linked in:
CPU: 0 UID: 0 PID: 1347 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:debug_print_object+0x1a5/0x2b0 lib/debugobjects.c:629
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d d8 59 1b 0c 41 56 48 8b 14 ed 40 40 62 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 e2 b4 10 0c 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc900032273c8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc900032274b0 RCX: 0000000000000000
RDX: ffffffff8c623f80 RSI: ffffffff8c623b20 RDI: ffffffff915004f0
RBP: 0000000000000003 R08: ffff8880554d1270 R09: ffffffff8bf312c0
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c623b20
R13: ffffffff8bf31300 R14: ffffffff88c9ef10 R15: ffffc900032274c8
FS: 0000000000000000(0000) GS:ffff8880d5b58000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000013d4e2cd3000 CR3: 00000000574e4000 CR4: 0000000000352ef0
Call Trace:
__debug_check_no_obj_freed lib/debugobjects.c:1171 [inline]
debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1201
slab_free_hook mm/slub.c:2679 [inline]
slab_free mm/slub.c:6508 [inline]
kfree+0x3d6/0x6d0 mm/slub.c:6801
device_release+0xd2/0x270 drivers/base/core.c:2640
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3884
vub300_delete drivers/mmc/host/vub300.c:379 [inline]
kref_put.constprop.0.isra.0+0x159/0x1d0 include/linux/kref.h:65
vub300_disconnect+0x136/0x170 drivers/mmc/host/vub300.c:2388
usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:618 [inline]
device_remove+0x12a/0x180 drivers/base/dd.c:610
__device_release_driver drivers/base/dd.c:1349 [inline]
device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664
device_del+0x376/0x9b0 drivers/base/core.c:3965
usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478
usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2350
hub_port_connect drivers/usb/core/hub.c:5420 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5720 [inline]
port_event drivers/usb/core/hub.c:5884 [inline]
hub_event+0x1bb1/0x4420 drivers/usb/core/hub.c:5966
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
----------------
Code disassembly (best guess):
0: b8 00 00 00 00 mov $0x0,%eax
5: 00 fc add %bh,%ah
7: ff lcall (bad)
8: df 48 89 fisttps -0x77(%rax)
b: fa cli
c: 48 c1 ea 03 shr $0x3,%rdx
10: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
14: 75 4f jne 0x65
16: 48 8d 3d d8 59 1b 0c lea 0xc1b59d8(%rip),%rdi # 0xc1b59f5
1d: 41 56 push %r14
1f: 48 8b 14 ed 40 40 62 mov -0x739dbfc0(,%rbp,8),%rdx
26: 8c
27: 4c 89 e6 mov %r12,%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 58 pop %rax
30: 83 05 e2 b4 10 0c 01 addl $0x1,0xc10b4e2(%rip) # 0xc10b519
37: 48 83 c4 18 add $0x18,%rsp
3b: 5b pop %rbx
3c: 5d pop %rbp
3d: 41 5c pop %r12
3f: 41 rex.B
final repro crashed as (corrupted=false):
------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff8880554d1270 object type: timer_list hint: vub300_inactivity_timer_expired+0x0/0x550 drivers/mmc/host/vub300.c:1447
WARNING: lib/debugobjects.c:629 at debug_print_object+0x198/0x2b0 lib/debugobjects.c:629, CPU#0: kworker/0:3/1347
Modules linked in:
CPU: 0 UID: 0 PID: 1347 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:debug_print_object+0x1a5/0x2b0 lib/debugobjects.c:629
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d d8 59 1b 0c 41 56 48 8b 14 ed 40 40 62 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 e2 b4 10 0c 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc900032273c8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc900032274b0 RCX: 0000000000000000
RDX: ffffffff8c623f80 RSI: ffffffff8c623b20 RDI: ffffffff915004f0
RBP: 0000000000000003 R08: ffff8880554d1270 R09: ffffffff8bf312c0
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c623b20
R13: ffffffff8bf31300 R14: ffffffff88c9ef10 R15: ffffc900032274c8
FS: 0000000000000000(0000) GS:ffff8880d5b58000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000013d4e2cd3000 CR3: 00000000574e4000 CR4: 0000000000352ef0
Call Trace:
__debug_check_no_obj_freed lib/debugobjects.c:1171 [inline]
debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1201
slab_free_hook mm/slub.c:2679 [inline]
slab_free mm/slub.c:6508 [inline]
kfree+0x3d6/0x6d0 mm/slub.c:6801
device_release+0xd2/0x270 drivers/base/core.c:2640
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3884
vub300_delete drivers/mmc/host/vub300.c:379 [inline]
kref_put.constprop.0.isra.0+0x159/0x1d0 include/linux/kref.h:65
vub300_disconnect+0x136/0x170 drivers/mmc/host/vub300.c:2388
usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:618 [inline]
device_remove+0x12a/0x180 drivers/base/dd.c:610
__device_release_driver drivers/base/dd.c:1349 [inline]
device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664
device_del+0x376/0x9b0 drivers/base/core.c:3965
usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478
usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2350
hub_port_connect drivers/usb/core/hub.c:5420 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5720 [inline]
port_event drivers/usb/core/hub.c:5884 [inline]
hub_event+0x1bb1/0x4420 drivers/usb/core/hub.c:5966
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
----------------
Code disassembly (best guess):
0: b8 00 00 00 00 mov $0x0,%eax
5: 00 fc add %bh,%ah
7: ff lcall (bad)
8: df 48 89 fisttps -0x77(%rax)
b: fa cli
c: 48 c1 ea 03 shr $0x3,%rdx
10: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
14: 75 4f jne 0x65
16: 48 8d 3d d8 59 1b 0c lea 0xc1b59d8(%rip),%rdi # 0xc1b59f5
1d: 41 56 push %r14
1f: 48 8b 14 ed 40 40 62 mov -0x739dbfc0(,%rbp,8),%rdx
26: 8c
27: 4c 89 e6 mov %r12,%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 58 pop %rax
30: 83 05 e2 b4 10 0c 01 addl $0x1,0xc10b4e2(%rip) # 0xc10b519
37: 48 83 c4 18 add $0x18,%rsp
3b: 5b pop %rbx
3c: 5d pop %rbp
3d: 41 5c pop %r12
3f: 41 rex.B