Extracting prog: 2m33.372183991s
Minimizing prog: 1m30.56680655s
Simplifying prog options: 0s
Extracting C: 1m23.435809992s
Simplifying C: 10m53.360712122s
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:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000001040)={{0x12, 0x1, 0x0, 0xd8, 0x3e, 0x50, 0x20, 0x424, 0xcf19, 0x5589, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0xed, 0x0, 0x0, 0xee, 0x57, 0xbb}}]}}]}}, 0x0)
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=1m18.444174019s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x0, 0x0, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=1m18.444174019s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
simplifying C reproducer
testing compiled C program (duration=1m18.444174019s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=1m18.444174019s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=1m18.444174019s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=1m18.444174019s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=1m18.444174019s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=1m18.444174019s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=1m18.444174019s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=1m18.444174019s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
reproducing took 16m20.735543132s
repro crashed as (corrupted=false):
usb 1-1: USB disconnect, device number 2
==================================================================
BUG: KASAN: slab-use-after-free in hdm_disconnect+0x10d/0x1c0 drivers/most/most_usb.c:1125
Read of size 8 at addr ffff88807e7f5898 by task kworker/1:1/48
CPU: 1 UID: 0 PID: 48 Comm: kworker/1:1 Not tainted 6.14.0-syzkaller-09584-g7d06015d936c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0x16e/0x5b0 mm/kasan/report.c:521
kasan_report+0x143/0x180 mm/kasan/report.c:634
hdm_disconnect+0x10d/0x1c0 drivers/most/most_usb.c:1125
usb_unbind_interface+0x25b/0x940 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x503/0x7c0 drivers/base/dd.c:1296
bus_remove_device+0x34f/0x420 drivers/base/bus.c:579
device_del+0x57c/0x9b0 drivers/base/core.c:3855
usb_disable_device+0x3c5/0x860 drivers/usb/core/message.c:1418
usb_disconnect+0x340/0x960 drivers/usb/core/hub.c:2316
hub_port_connect drivers/usb/core/hub.c:5373 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x1d2a/0x50f0 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 121:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x236/0x370 mm/slub.c:4349
kmalloc_noprof include/linux/slab.h:902 [inline]
kzalloc_noprof include/linux/slab.h:1036 [inline]
hdm_probe+0x98/0x1410 drivers/most/most_usb.c:959
usb_probe_interface+0x650/0xbc0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2b9/0xad0 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
driver_probe_device+0x50/0x430 drivers/base/dd.c:830
__device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
bus_for_each_drv+0x258/0x2e0 drivers/base/bus.c:462
__device_attach+0x341/0x530 drivers/base/dd.c:1030
bus_probe_device+0x189/0x260 drivers/base/bus.c:537
device_add+0x856/0xbf0 drivers/base/core.c:3666
usb_set_configuration+0x1999/0x1fe0 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:250
usb_probe_device+0x1b8/0x380 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2b9/0xad0 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
driver_probe_device+0x50/0x430 drivers/base/dd.c:830
__device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
bus_for_each_drv+0x258/0x2e0 drivers/base/bus.c:462
__device_attach+0x341/0x530 drivers/base/dd.c:1030
bus_probe_device+0x189/0x260 drivers/base/bus.c:537
device_add+0x856/0xbf0 drivers/base/core.c:3666
usb_new_device+0x1052/0x19a0 drivers/usb/core/hub.c:2663
hub_port_connect drivers/usb/core/hub.c:5533 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x2bfd/0x50f0 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 48:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2376 [inline]
slab_free mm/slub.c:4633 [inline]
kfree+0x198/0x430 mm/slub.c:4832
device_release+0x99/0x1c0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x22f/0x480 lib/kobject.c:737
hdm_disconnect+0xf3/0x1c0 drivers/most/most_usb.c:1123
usb_unbind_interface+0x25b/0x940 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x503/0x7c0 drivers/base/dd.c:1296
bus_remove_device+0x34f/0x420 drivers/base/bus.c:579
device_del+0x57c/0x9b0 drivers/base/core.c:3855
usb_disable_device+0x3c5/0x860 drivers/usb/core/message.c:1418
usb_disconnect+0x340/0x960 drivers/usb/core/hub.c:2316
hub_port_connect drivers/usb/core/hub.c:5373 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x1d2a/0x50f0 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88807e7f4000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 6296 bytes inside of
freed 8192-byte region [ffff88807e7f4000, ffff88807e7f6000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e7f0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b042280 ffffea0000d15200 0000000000000004
raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042280 ffffea0000d15200 0000000000000004
head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001f9fc01 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5500, tgid 5500 (rcS), ts 43788090118, free_ts 43787789369
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3695/0x37e0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x2c5/0x7b0 mm/page_alloc.c:4740
alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301
alloc_slab_page mm/slub.c:2446 [inline]
allocate_slab+0x8f/0x3a0 mm/slub.c:2610
new_slab mm/slub.c:2663 [inline]
___slab_alloc+0xc3b/0x1500 mm/slub.c:3849
__slab_alloc+0x58/0xa0 mm/slub.c:3939
__slab_alloc_node mm/slub.c:4014 [inline]
slab_alloc_node mm/slub.c:4175 [inline]
__kmalloc_cache_noprof+0x26a/0x370 mm/slub.c:4344
kmalloc_noprof include/linux/slab.h:902 [inline]
kzalloc_noprof include/linux/slab.h:1036 [inline]
tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
tomoyo_init_log+0x121e/0x2150 security/tomoyo/audit.c:264
tomoyo_supervisor+0x3c0/0x18b0 security/tomoyo/common.c:2198
tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
tomoyo_env_perm+0x17b/0x220 security/tomoyo/environ.c:63
tomoyo_environ security/tomoyo/domain.c:672 [inline]
tomoyo_find_next_domain+0x1497/0x1dd0 security/tomoyo/domain.c:888
tomoyo_bprm_check_security+0x11a/0x180 security/tomoyo/tomoyo.c:102
security_bprm_check+0x86/0x250 security/security.c:1302
search_binary_handler fs/exec.c:1763 [inline]
exec_binprm fs/exec.c:1805 [inline]
bprm_execve+0x8d5/0x1440 fs/exec.c:1857
do_execveat_common+0x57c/0x710 fs/exec.c:1964
page last free pid 5500 tgid 5500 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe16/0x10f0 mm/page_alloc.c:2660
discard_slab mm/slub.c:2707 [inline]
__put_partials+0x160/0x1c0 mm/slub.c:3176
put_cpu_partial+0x17e/0x250 mm/slub.c:3251
__slab_free+0x294/0x390 mm/slub.c:4503
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4138 [inline]
slab_alloc_node mm/slub.c:4187 [inline]
__do_kmalloc_node mm/slub.c:4317 [inline]
__kmalloc_noprof+0x238/0x4d0 mm/slub.c:4330
kmalloc_noprof include/linux/slab.h:906 [inline]
tomoyo_add_entry security/tomoyo/common.c:2132 [inline]
tomoyo_supervisor+0xc94/0x18b0 security/tomoyo/common.c:2204
tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
tomoyo_env_perm+0x17b/0x220 security/tomoyo/environ.c:63
tomoyo_environ security/tomoyo/domain.c:672 [inline]
tomoyo_find_next_domain+0x1497/0x1dd0 security/tomoyo/domain.c:888
tomoyo_bprm_check_security+0x11a/0x180 security/tomoyo/tomoyo.c:102
security_bprm_check+0x86/0x250 security/security.c:1302
search_binary_handler fs/exec.c:1763 [inline]
exec_binprm fs/exec.c:1805 [inline]
bprm_execve+0x8d5/0x1440 fs/exec.c:1857
do_execveat_common+0x57c/0x710 fs/exec.c:1964
do_execve fs/exec.c:2038 [inline]
__do_sys_execve fs/exec.c:2114 [inline]
__se_sys_execve fs/exec.c:2109 [inline]
__x64_sys_execve+0x94/0xb0 fs/exec.c:2109
Memory state around the buggy address:
ffff88807e7f5780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e7f5800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807e7f5880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807e7f5900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e7f5980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
final repro crashed as (corrupted=false):
usb 1-1: USB disconnect, device number 2
==================================================================
BUG: KASAN: slab-use-after-free in hdm_disconnect+0x10d/0x1c0 drivers/most/most_usb.c:1125
Read of size 8 at addr ffff88807e7f5898 by task kworker/1:1/48
CPU: 1 UID: 0 PID: 48 Comm: kworker/1:1 Not tainted 6.14.0-syzkaller-09584-g7d06015d936c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0x16e/0x5b0 mm/kasan/report.c:521
kasan_report+0x143/0x180 mm/kasan/report.c:634
hdm_disconnect+0x10d/0x1c0 drivers/most/most_usb.c:1125
usb_unbind_interface+0x25b/0x940 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x503/0x7c0 drivers/base/dd.c:1296
bus_remove_device+0x34f/0x420 drivers/base/bus.c:579
device_del+0x57c/0x9b0 drivers/base/core.c:3855
usb_disable_device+0x3c5/0x860 drivers/usb/core/message.c:1418
usb_disconnect+0x340/0x960 drivers/usb/core/hub.c:2316
hub_port_connect drivers/usb/core/hub.c:5373 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x1d2a/0x50f0 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 121:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x236/0x370 mm/slub.c:4349
kmalloc_noprof include/linux/slab.h:902 [inline]
kzalloc_noprof include/linux/slab.h:1036 [inline]
hdm_probe+0x98/0x1410 drivers/most/most_usb.c:959
usb_probe_interface+0x650/0xbc0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2b9/0xad0 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
driver_probe_device+0x50/0x430 drivers/base/dd.c:830
__device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
bus_for_each_drv+0x258/0x2e0 drivers/base/bus.c:462
__device_attach+0x341/0x530 drivers/base/dd.c:1030
bus_probe_device+0x189/0x260 drivers/base/bus.c:537
device_add+0x856/0xbf0 drivers/base/core.c:3666
usb_set_configuration+0x1999/0x1fe0 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:250
usb_probe_device+0x1b8/0x380 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2b9/0xad0 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
driver_probe_device+0x50/0x430 drivers/base/dd.c:830
__device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
bus_for_each_drv+0x258/0x2e0 drivers/base/bus.c:462
__device_attach+0x341/0x530 drivers/base/dd.c:1030
bus_probe_device+0x189/0x260 drivers/base/bus.c:537
device_add+0x856/0xbf0 drivers/base/core.c:3666
usb_new_device+0x1052/0x19a0 drivers/usb/core/hub.c:2663
hub_port_connect drivers/usb/core/hub.c:5533 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x2bfd/0x50f0 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 48:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2376 [inline]
slab_free mm/slub.c:4633 [inline]
kfree+0x198/0x430 mm/slub.c:4832
device_release+0x99/0x1c0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x22f/0x480 lib/kobject.c:737
hdm_disconnect+0xf3/0x1c0 drivers/most/most_usb.c:1123
usb_unbind_interface+0x25b/0x940 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x503/0x7c0 drivers/base/dd.c:1296
bus_remove_device+0x34f/0x420 drivers/base/bus.c:579
device_del+0x57c/0x9b0 drivers/base/core.c:3855
usb_disable_device+0x3c5/0x860 drivers/usb/core/message.c:1418
usb_disconnect+0x340/0x960 drivers/usb/core/hub.c:2316
hub_port_connect drivers/usb/core/hub.c:5373 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x1d2a/0x50f0 drivers/usb/core/hub.c:5915
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88807e7f4000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 6296 bytes inside of
freed 8192-byte region [ffff88807e7f4000, ffff88807e7f6000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e7f0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b042280 ffffea0000d15200 0000000000000004
raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042280 ffffea0000d15200 0000000000000004
head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001f9fc01 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5500, tgid 5500 (rcS), ts 43788090118, free_ts 43787789369
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3695/0x37e0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x2c5/0x7b0 mm/page_alloc.c:4740
alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301
alloc_slab_page mm/slub.c:2446 [inline]
allocate_slab+0x8f/0x3a0 mm/slub.c:2610
new_slab mm/slub.c:2663 [inline]
___slab_alloc+0xc3b/0x1500 mm/slub.c:3849
__slab_alloc+0x58/0xa0 mm/slub.c:3939
__slab_alloc_node mm/slub.c:4014 [inline]
slab_alloc_node mm/slub.c:4175 [inline]
__kmalloc_cache_noprof+0x26a/0x370 mm/slub.c:4344
kmalloc_noprof include/linux/slab.h:902 [inline]
kzalloc_noprof include/linux/slab.h:1036 [inline]
tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
tomoyo_init_log+0x121e/0x2150 security/tomoyo/audit.c:264
tomoyo_supervisor+0x3c0/0x18b0 security/tomoyo/common.c:2198
tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
tomoyo_env_perm+0x17b/0x220 security/tomoyo/environ.c:63
tomoyo_environ security/tomoyo/domain.c:672 [inline]
tomoyo_find_next_domain+0x1497/0x1dd0 security/tomoyo/domain.c:888
tomoyo_bprm_check_security+0x11a/0x180 security/tomoyo/tomoyo.c:102
security_bprm_check+0x86/0x250 security/security.c:1302
search_binary_handler fs/exec.c:1763 [inline]
exec_binprm fs/exec.c:1805 [inline]
bprm_execve+0x8d5/0x1440 fs/exec.c:1857
do_execveat_common+0x57c/0x710 fs/exec.c:1964
page last free pid 5500 tgid 5500 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe16/0x10f0 mm/page_alloc.c:2660
discard_slab mm/slub.c:2707 [inline]
__put_partials+0x160/0x1c0 mm/slub.c:3176
put_cpu_partial+0x17e/0x250 mm/slub.c:3251
__slab_free+0x294/0x390 mm/slub.c:4503
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4138 [inline]
slab_alloc_node mm/slub.c:4187 [inline]
__do_kmalloc_node mm/slub.c:4317 [inline]
__kmalloc_noprof+0x238/0x4d0 mm/slub.c:4330
kmalloc_noprof include/linux/slab.h:906 [inline]
tomoyo_add_entry security/tomoyo/common.c:2132 [inline]
tomoyo_supervisor+0xc94/0x18b0 security/tomoyo/common.c:2204
tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
tomoyo_env_perm+0x17b/0x220 security/tomoyo/environ.c:63
tomoyo_environ security/tomoyo/domain.c:672 [inline]
tomoyo_find_next_domain+0x1497/0x1dd0 security/tomoyo/domain.c:888
tomoyo_bprm_check_security+0x11a/0x180 security/tomoyo/tomoyo.c:102
security_bprm_check+0x86/0x250 security/security.c:1302
search_binary_handler fs/exec.c:1763 [inline]
exec_binprm fs/exec.c:1805 [inline]
bprm_execve+0x8d5/0x1440 fs/exec.c:1857
do_execveat_common+0x57c/0x710 fs/exec.c:1964
do_execve fs/exec.c:2038 [inline]
__do_sys_execve fs/exec.c:2114 [inline]
__se_sys_execve fs/exec.c:2109 [inline]
__x64_sys_execve+0x94/0xb0 fs/exec.c:2109
Memory state around the buggy address:
ffff88807e7f5780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e7f5800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807e7f5880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807e7f5900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807e7f5980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================