Date
July 6, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 | |
| x86 |
[ 16.880254] ================================================================== [ 16.880848] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 16.881179] Read of size 16 at addr fff00000c5fbe800 by task kunit_try_catch/169 [ 16.881245] [ 16.881377] CPU: 0 UID: 0 PID: 169 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.881486] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.881512] Hardware name: linux,dummy-virt (DT) [ 16.881541] Call trace: [ 16.881813] show_stack+0x20/0x38 (C) [ 16.881902] dump_stack_lvl+0x8c/0xd0 [ 16.881949] print_report+0x118/0x608 [ 16.882287] kasan_report+0xdc/0x128 [ 16.882449] __asan_report_load16_noabort+0x20/0x30 [ 16.882500] kmalloc_uaf_16+0x3bc/0x438 [ 16.882824] kunit_try_run_case+0x170/0x3f0 [ 16.882913] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.882964] kthread+0x328/0x630 [ 16.883016] ret_from_fork+0x10/0x20 [ 16.883087] [ 16.883108] Allocated by task 169: [ 16.883247] kasan_save_stack+0x3c/0x68 [ 16.883302] kasan_save_track+0x20/0x40 [ 16.883345] kasan_save_alloc_info+0x40/0x58 [ 16.883383] __kasan_kmalloc+0xd4/0xd8 [ 16.883433] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.883471] kmalloc_uaf_16+0x140/0x438 [ 16.883504] kunit_try_run_case+0x170/0x3f0 [ 16.883539] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.884013] kthread+0x328/0x630 [ 16.884051] ret_from_fork+0x10/0x20 [ 16.884250] [ 16.884270] Freed by task 169: [ 16.884311] kasan_save_stack+0x3c/0x68 [ 16.884389] kasan_save_track+0x20/0x40 [ 16.884530] kasan_save_free_info+0x4c/0x78 [ 16.884568] __kasan_slab_free+0x6c/0x98 [ 16.884609] kfree+0x214/0x3c8 [ 16.884757] kmalloc_uaf_16+0x190/0x438 [ 16.884831] kunit_try_run_case+0x170/0x3f0 [ 16.884924] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.884965] kthread+0x328/0x630 [ 16.885256] ret_from_fork+0x10/0x20 [ 16.885299] [ 16.885318] The buggy address belongs to the object at fff00000c5fbe800 [ 16.885318] which belongs to the cache kmalloc-16 of size 16 [ 16.885374] The buggy address is located 0 bytes inside of [ 16.885374] freed 16-byte region [fff00000c5fbe800, fff00000c5fbe810) [ 16.885921] [ 16.885952] The buggy address belongs to the physical page: [ 16.886124] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105fbe [ 16.886188] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.886237] page_type: f5(slab) [ 16.886277] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.886326] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.886364] page dumped because: kasan: bad access detected [ 16.886410] [ 16.886428] Memory state around the buggy address: [ 16.886459] fff00000c5fbe700: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.886998] fff00000c5fbe780: 00 04 fc fc fa fb fc fc fa fb fc fc 00 00 fc fc [ 16.887174] >fff00000c5fbe800: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.887213] ^ [ 16.887240] fff00000c5fbe880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.887351] fff00000c5fbe900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.887735] ==================================================================
[ 16.830322] ================================================================== [ 16.830555] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 16.830640] Read of size 16 at addr fff00000c1376c00 by task kunit_try_catch/169 [ 16.830689] [ 16.831100] CPU: 1 UID: 0 PID: 169 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.831250] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.831633] Hardware name: linux,dummy-virt (DT) [ 16.831785] Call trace: [ 16.831842] show_stack+0x20/0x38 (C) [ 16.832199] dump_stack_lvl+0x8c/0xd0 [ 16.832261] print_report+0x118/0x608 [ 16.832306] kasan_report+0xdc/0x128 [ 16.832350] __asan_report_load16_noabort+0x20/0x30 [ 16.832459] kmalloc_uaf_16+0x3bc/0x438 [ 16.832870] kunit_try_run_case+0x170/0x3f0 [ 16.832930] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.832997] kthread+0x328/0x630 [ 16.833038] ret_from_fork+0x10/0x20 [ 16.833139] [ 16.833158] Allocated by task 169: [ 16.833186] kasan_save_stack+0x3c/0x68 [ 16.833231] kasan_save_track+0x20/0x40 [ 16.833390] kasan_save_alloc_info+0x40/0x58 [ 16.833448] __kasan_kmalloc+0xd4/0xd8 [ 16.833549] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.833587] kmalloc_uaf_16+0x140/0x438 [ 16.833621] kunit_try_run_case+0x170/0x3f0 [ 16.833656] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.833736] kthread+0x328/0x630 [ 16.833878] ret_from_fork+0x10/0x20 [ 16.834014] [ 16.834033] Freed by task 169: [ 16.834058] kasan_save_stack+0x3c/0x68 [ 16.834534] kasan_save_track+0x20/0x40 [ 16.834581] kasan_save_free_info+0x4c/0x78 [ 16.834757] __kasan_slab_free+0x6c/0x98 [ 16.834806] kfree+0x214/0x3c8 [ 16.834856] kmalloc_uaf_16+0x190/0x438 [ 16.834891] kunit_try_run_case+0x170/0x3f0 [ 16.834976] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.835035] kthread+0x328/0x630 [ 16.835066] ret_from_fork+0x10/0x20 [ 16.835100] [ 16.835371] The buggy address belongs to the object at fff00000c1376c00 [ 16.835371] which belongs to the cache kmalloc-16 of size 16 [ 16.835440] The buggy address is located 0 bytes inside of [ 16.835440] freed 16-byte region [fff00000c1376c00, fff00000c1376c10) [ 16.835604] [ 16.835687] The buggy address belongs to the physical page: [ 16.835716] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101376 [ 16.835769] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.836116] page_type: f5(slab) [ 16.836243] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.836384] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.836423] page dumped because: kasan: bad access detected [ 16.836452] [ 16.836480] Memory state around the buggy address: [ 16.836564] fff00000c1376b00: fa fb fc fc fa fb fc fc fa fb fc fc 00 04 fc fc [ 16.836605] fff00000c1376b80: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc [ 16.836646] >fff00000c1376c00: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.836682] ^ [ 16.836718] fff00000c1376c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.836758] fff00000c1376d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.836943] ==================================================================
[ 13.349410] ================================================================== [ 13.349870] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 13.350125] Read of size 16 at addr ffff888101c6db60 by task kunit_try_catch/186 [ 13.350728] [ 13.350929] CPU: 0 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.351008] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.351031] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.351068] Call Trace: [ 13.351093] <TASK> [ 13.351127] dump_stack_lvl+0x73/0xb0 [ 13.351177] print_report+0xd1/0x650 [ 13.351210] ? __virt_addr_valid+0x1db/0x2d0 [ 13.351244] ? kmalloc_uaf_16+0x47b/0x4c0 [ 13.351277] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.351318] ? kmalloc_uaf_16+0x47b/0x4c0 [ 13.351350] kasan_report+0x141/0x180 [ 13.351386] ? kmalloc_uaf_16+0x47b/0x4c0 [ 13.351431] __asan_report_load16_noabort+0x18/0x20 [ 13.351474] kmalloc_uaf_16+0x47b/0x4c0 [ 13.351512] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 13.351547] ? __schedule+0x10cc/0x2b60 [ 13.351648] ? __pfx_read_tsc+0x10/0x10 [ 13.351684] ? ktime_get_ts64+0x86/0x230 [ 13.351732] kunit_try_run_case+0x1a5/0x480 [ 13.351777] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.351817] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.351860] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.351903] ? __kthread_parkme+0x82/0x180 [ 13.351941] ? preempt_count_sub+0x50/0x80 [ 13.351986] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.352030] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.352062] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.352092] kthread+0x337/0x6f0 [ 13.352145] ? trace_preempt_on+0x20/0xc0 [ 13.352168] ? __pfx_kthread+0x10/0x10 [ 13.352186] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.352205] ? calculate_sigpending+0x7b/0xa0 [ 13.352227] ? __pfx_kthread+0x10/0x10 [ 13.352246] ret_from_fork+0x116/0x1d0 [ 13.352289] ? __pfx_kthread+0x10/0x10 [ 13.352310] ret_from_fork_asm+0x1a/0x30 [ 13.352339] </TASK> [ 13.352351] [ 13.364592] Allocated by task 186: [ 13.365013] kasan_save_stack+0x45/0x70 [ 13.365376] kasan_save_track+0x18/0x40 [ 13.365954] kasan_save_alloc_info+0x3b/0x50 [ 13.366397] __kasan_kmalloc+0xb7/0xc0 [ 13.366564] __kmalloc_cache_noprof+0x189/0x420 [ 13.366870] kmalloc_uaf_16+0x15b/0x4c0 [ 13.367109] kunit_try_run_case+0x1a5/0x480 [ 13.367343] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.367579] kthread+0x337/0x6f0 [ 13.367850] ret_from_fork+0x116/0x1d0 [ 13.368036] ret_from_fork_asm+0x1a/0x30 [ 13.368262] [ 13.369077] Freed by task 186: [ 13.369236] kasan_save_stack+0x45/0x70 [ 13.369391] kasan_save_track+0x18/0x40 [ 13.370412] kasan_save_free_info+0x3f/0x60 [ 13.370645] __kasan_slab_free+0x56/0x70 [ 13.370790] kfree+0x222/0x3f0 [ 13.371000] kmalloc_uaf_16+0x1d6/0x4c0 [ 13.371441] kunit_try_run_case+0x1a5/0x480 [ 13.371882] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.372352] kthread+0x337/0x6f0 [ 13.372848] ret_from_fork+0x116/0x1d0 [ 13.373047] ret_from_fork_asm+0x1a/0x30 [ 13.373921] [ 13.374028] The buggy address belongs to the object at ffff888101c6db60 [ 13.374028] which belongs to the cache kmalloc-16 of size 16 [ 13.374417] The buggy address is located 0 bytes inside of [ 13.374417] freed 16-byte region [ffff888101c6db60, ffff888101c6db70) [ 13.375254] [ 13.375450] The buggy address belongs to the physical page: [ 13.376396] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101c6d [ 13.376857] flags: 0x200000000000000(node=0|zone=2) [ 13.377072] page_type: f5(slab) [ 13.377731] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 13.378068] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 13.378825] page dumped because: kasan: bad access detected [ 13.379026] [ 13.379116] Memory state around the buggy address: [ 13.379748] ffff888101c6da00: 00 05 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 13.380453] ffff888101c6da80: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 13.380934] >ffff888101c6db00: 00 05 fc fc fa fb fc fc 00 00 fc fc fa fb fc fc [ 13.381783] ^ [ 13.382088] ffff888101c6db80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.382423] ffff888101c6dc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.383049] ==================================================================
[ 13.514694] ================================================================== [ 13.515568] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 13.516816] Read of size 16 at addr ffff8881028730e0 by task kunit_try_catch/185 [ 13.517176] [ 13.517292] CPU: 1 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.517338] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.517353] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.517376] Call Trace: [ 13.517390] <TASK> [ 13.517406] dump_stack_lvl+0x73/0xb0 [ 13.517437] print_report+0xd1/0x650 [ 13.517460] ? __virt_addr_valid+0x1db/0x2d0 [ 13.517484] ? kmalloc_uaf_16+0x47b/0x4c0 [ 13.517504] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.517535] ? kmalloc_uaf_16+0x47b/0x4c0 [ 13.517556] kasan_report+0x141/0x180 [ 13.517578] ? kmalloc_uaf_16+0x47b/0x4c0 [ 13.517605] __asan_report_load16_noabort+0x18/0x20 [ 13.517629] kmalloc_uaf_16+0x47b/0x4c0 [ 13.517650] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 13.517672] ? __schedule+0x10cc/0x2b60 [ 13.517694] ? __pfx_read_tsc+0x10/0x10 [ 13.517760] ? ktime_get_ts64+0x86/0x230 [ 13.517788] kunit_try_run_case+0x1a5/0x480 [ 13.517814] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.517836] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.517859] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.517882] ? __kthread_parkme+0x82/0x180 [ 13.517903] ? preempt_count_sub+0x50/0x80 [ 13.517927] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.517951] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.517973] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.517997] kthread+0x337/0x6f0 [ 13.518018] ? trace_preempt_on+0x20/0xc0 [ 13.518043] ? __pfx_kthread+0x10/0x10 [ 13.518077] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.518132] ? calculate_sigpending+0x7b/0xa0 [ 13.518158] ? __pfx_kthread+0x10/0x10 [ 13.518180] ret_from_fork+0x116/0x1d0 [ 13.518199] ? __pfx_kthread+0x10/0x10 [ 13.518219] ret_from_fork_asm+0x1a/0x30 [ 13.518252] </TASK> [ 13.518263] [ 13.526197] Allocated by task 185: [ 13.526387] kasan_save_stack+0x45/0x70 [ 13.526598] kasan_save_track+0x18/0x40 [ 13.526930] kasan_save_alloc_info+0x3b/0x50 [ 13.527155] __kasan_kmalloc+0xb7/0xc0 [ 13.527295] __kmalloc_cache_noprof+0x189/0x420 [ 13.527457] kmalloc_uaf_16+0x15b/0x4c0 [ 13.527596] kunit_try_run_case+0x1a5/0x480 [ 13.527809] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.528153] kthread+0x337/0x6f0 [ 13.528530] ret_from_fork+0x116/0x1d0 [ 13.528987] ret_from_fork_asm+0x1a/0x30 [ 13.529235] [ 13.529339] Freed by task 185: [ 13.529575] kasan_save_stack+0x45/0x70 [ 13.529971] kasan_save_track+0x18/0x40 [ 13.530187] kasan_save_free_info+0x3f/0x60 [ 13.530341] __kasan_slab_free+0x56/0x70 [ 13.530482] kfree+0x222/0x3f0 [ 13.530603] kmalloc_uaf_16+0x1d6/0x4c0 [ 13.530759] kunit_try_run_case+0x1a5/0x480 [ 13.531082] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.531498] kthread+0x337/0x6f0 [ 13.531840] ret_from_fork+0x116/0x1d0 [ 13.532212] ret_from_fork_asm+0x1a/0x30 [ 13.532465] [ 13.532604] The buggy address belongs to the object at ffff8881028730e0 [ 13.532604] which belongs to the cache kmalloc-16 of size 16 [ 13.533292] The buggy address is located 0 bytes inside of [ 13.533292] freed 16-byte region [ffff8881028730e0, ffff8881028730f0) [ 13.533909] [ 13.534019] The buggy address belongs to the physical page: [ 13.534335] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102873 [ 13.534701] flags: 0x200000000000000(node=0|zone=2) [ 13.534883] page_type: f5(slab) [ 13.535016] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 13.535281] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 13.535910] page dumped because: kasan: bad access detected [ 13.536412] [ 13.536569] Memory state around the buggy address: [ 13.536756] ffff888102872f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.537166] ffff888102873000: 00 01 fc fc 00 04 fc fc 00 04 fc fc fa fb fc fc [ 13.537516] >ffff888102873080: fa fb fc fc fa fb fc fc 00 00 fc fc fa fb fc fc [ 13.538038] ^ [ 13.538367] ffff888102873100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.538649] ffff888102873180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.539136] ==================================================================
[ 24.259101] ================================================================== [ 24.269913] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 24.276699] Read of size 16 at addr ffff888100c91680 by task kunit_try_catch/209 [ 24.284091] [ 24.285594] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G S B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 24.285603] Tainted: [S]=CPU_OUT_OF_SPEC, [B]=BAD_PAGE, [N]=TEST [ 24.285606] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.7 12/07/2021 [ 24.285609] Call Trace: [ 24.285611] <TASK> [ 24.285613] dump_stack_lvl+0x73/0xb0 [ 24.285617] print_report+0xd1/0x650 [ 24.285621] ? __virt_addr_valid+0x1db/0x2d0 [ 24.285626] ? kmalloc_uaf_16+0x47b/0x4c0 [ 24.285629] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.285634] ? kmalloc_uaf_16+0x47b/0x4c0 [ 24.285638] kasan_report+0x141/0x180 [ 24.285642] ? kmalloc_uaf_16+0x47b/0x4c0 [ 24.285646] __asan_report_load16_noabort+0x18/0x20 [ 24.285651] kmalloc_uaf_16+0x47b/0x4c0 [ 24.285655] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 24.285659] ? __schedule+0x10cc/0x2b60 [ 24.285663] ? ktime_get_ts64+0x83/0x230 [ 24.285667] kunit_try_run_case+0x1a2/0x480 [ 24.285672] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.285676] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 24.285680] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.285684] ? __kthread_parkme+0x82/0x180 [ 24.285688] ? preempt_count_sub+0x50/0x80 [ 24.285692] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.285696] kunit_generic_run_threadfn_adapter+0x82/0xf0 [ 24.285701] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.285705] kthread+0x334/0x6f0 [ 24.285708] ? trace_preempt_on+0x20/0xc0 [ 24.285712] ? __pfx_kthread+0x10/0x10 [ 24.285716] ? _raw_spin_unlock_irq+0x47/0x80 [ 24.285720] ? calculate_sigpending+0x7b/0xa0 [ 24.285724] ? __pfx_kthread+0x10/0x10 [ 24.285728] ret_from_fork+0x113/0x1d0 [ 24.285731] ? __pfx_kthread+0x10/0x10 [ 24.285735] ret_from_fork_asm+0x1a/0x30 [ 24.285741] </TASK> [ 24.285742] [ 24.449259] Allocated by task 209: [ 24.452668] kasan_save_stack+0x45/0x70 [ 24.456513] kasan_save_track+0x18/0x40 [ 24.460363] kasan_save_alloc_info+0x3b/0x50 [ 24.464661] __kasan_kmalloc+0xb7/0xc0 [ 24.468415] __kmalloc_cache_noprof+0x189/0x420 [ 24.472956] kmalloc_uaf_16+0x15b/0x4c0 [ 24.476794] kunit_try_run_case+0x1a2/0x480 [ 24.480979] kunit_generic_run_threadfn_adapter+0x82/0xf0 [ 24.486392] kthread+0x334/0x6f0 [ 24.489630] ret_from_fork+0x113/0x1d0 [ 24.493406] ret_from_fork_asm+0x1a/0x30 [ 24.497362] [ 24.498886] Freed by task 209: [ 24.501946] kasan_save_stack+0x45/0x70 [ 24.505783] kasan_save_track+0x18/0x40 [ 24.509625] kasan_save_free_info+0x3f/0x60 [ 24.513816] __kasan_slab_free+0x56/0x70 [ 24.517743] kfree+0x222/0x3f0 [ 24.520802] kmalloc_uaf_16+0x1d6/0x4c0 [ 24.524642] kunit_try_run_case+0x1a2/0x480 [ 24.528828] kunit_generic_run_threadfn_adapter+0x82/0xf0 [ 24.534229] kthread+0x334/0x6f0 [ 24.537460] ret_from_fork+0x113/0x1d0 [ 24.541212] ret_from_fork_asm+0x1a/0x30 [ 24.545140] [ 24.546637] The buggy address belongs to the object at ffff888100c91680 [ 24.546637] which belongs to the cache kmalloc-16 of size 16 [ 24.558972] The buggy address is located 0 bytes inside of [ 24.558972] freed 16-byte region [ffff888100c91680, ffff888100c91690) [ 24.570967] [ 24.572466] The buggy address belongs to the physical page: [ 24.578039] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100c91 [ 24.586044] flags: 0x200000000000000(node=0|zone=2) [ 24.590925] page_type: f5(slab) [ 24.594073] raw: 0200000000000000 ffff888100042640 dead000000000122 0000000000000000 [ 24.601820] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 24.609559] page dumped because: kasan: bad access detected [ 24.615131] [ 24.616629] Memory state around the buggy address: [ 24.621424] ffff888100c91580: 00 06 fc fc 00 06 fc fc 00 00 fc fc 00 00 fc fc [ 24.628644] ffff888100c91600: 00 00 fc fc 00 04 fc fc 00 06 fc fc 00 00 fc fc [ 24.635871] >ffff888100c91680: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.643090] ^ [ 24.646322] ffff888100c91700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.653568] ffff888100c91780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.660785] ==================================================================