Date
July 20, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.566699] ================================================================== [ 16.566760] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 16.566833] Read of size 16 at addr fff00000c59ab940 by task kunit_try_catch/168 [ 16.566918] [ 16.567074] CPU: 1 UID: 0 PID: 168 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 16.567285] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.567412] Hardware name: linux,dummy-virt (DT) [ 16.567572] Call trace: [ 16.567651] show_stack+0x20/0x38 (C) [ 16.567757] dump_stack_lvl+0x8c/0xd0 [ 16.568176] print_report+0x118/0x5d0 [ 16.568435] kasan_report+0xdc/0x128 [ 16.568493] __asan_report_load16_noabort+0x20/0x30 [ 16.568545] kmalloc_uaf_16+0x3bc/0x438 [ 16.569081] kunit_try_run_case+0x170/0x3f0 [ 16.569221] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.569275] kthread+0x328/0x630 [ 16.569318] ret_from_fork+0x10/0x20 [ 16.569464] [ 16.569483] Allocated by task 168: [ 16.569512] kasan_save_stack+0x3c/0x68 [ 16.569552] kasan_save_track+0x20/0x40 [ 16.569589] kasan_save_alloc_info+0x40/0x58 [ 16.569628] __kasan_kmalloc+0xd4/0xd8 [ 16.569664] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.569712] kmalloc_uaf_16+0x140/0x438 [ 16.569748] kunit_try_run_case+0x170/0x3f0 [ 16.569911] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.570127] kthread+0x328/0x630 [ 16.570164] ret_from_fork+0x10/0x20 [ 16.570291] [ 16.570312] Freed by task 168: [ 16.570386] kasan_save_stack+0x3c/0x68 [ 16.570592] kasan_save_track+0x20/0x40 [ 16.570634] kasan_save_free_info+0x4c/0x78 [ 16.570706] __kasan_slab_free+0x6c/0x98 [ 16.570743] kfree+0x214/0x3c8 [ 16.570777] kmalloc_uaf_16+0x190/0x438 [ 16.570832] kunit_try_run_case+0x170/0x3f0 [ 16.571025] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.571213] kthread+0x328/0x630 [ 16.571246] ret_from_fork+0x10/0x20 [ 16.571281] [ 16.571300] The buggy address belongs to the object at fff00000c59ab940 [ 16.571300] which belongs to the cache kmalloc-16 of size 16 [ 16.571356] The buggy address is located 0 bytes inside of [ 16.571356] freed 16-byte region [fff00000c59ab940, fff00000c59ab950) [ 16.571415] [ 16.571442] The buggy address belongs to the physical page: [ 16.571529] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1059ab [ 16.571643] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.571691] page_type: f5(slab) [ 16.571730] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.571823] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.571927] page dumped because: kasan: bad access detected [ 16.571997] [ 16.572014] Memory state around the buggy address: [ 16.572070] fff00000c59ab800: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.572118] fff00000c59ab880: fa fb fc fc 00 04 fc fc fa fb fc fc fa fb fc fc [ 16.572159] >fff00000c59ab900: fa fb fc fc 00 00 fc fc fa fb fc fc fc fc fc fc [ 16.572197] ^ [ 16.572291] fff00000c59ab980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.572333] fff00000c59aba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.572370] ==================================================================
[ 16.547055] ================================================================== [ 16.547670] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 16.547744] Read of size 16 at addr fff00000c1375b60 by task kunit_try_catch/168 [ 16.547796] [ 16.547924] CPU: 1 UID: 0 PID: 168 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 16.548034] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.548494] Hardware name: linux,dummy-virt (DT) [ 16.548653] Call trace: [ 16.548735] show_stack+0x20/0x38 (C) [ 16.548831] dump_stack_lvl+0x8c/0xd0 [ 16.549051] print_report+0x118/0x5d0 [ 16.549303] kasan_report+0xdc/0x128 [ 16.549364] __asan_report_load16_noabort+0x20/0x30 [ 16.549416] kmalloc_uaf_16+0x3bc/0x438 [ 16.549601] kunit_try_run_case+0x170/0x3f0 [ 16.549900] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.550007] kthread+0x328/0x630 [ 16.550265] ret_from_fork+0x10/0x20 [ 16.550795] [ 16.550896] Allocated by task 168: [ 16.550951] kasan_save_stack+0x3c/0x68 [ 16.551003] kasan_save_track+0x20/0x40 [ 16.551061] kasan_save_alloc_info+0x40/0x58 [ 16.551102] __kasan_kmalloc+0xd4/0xd8 [ 16.551139] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.551186] kmalloc_uaf_16+0x140/0x438 [ 16.551230] kunit_try_run_case+0x170/0x3f0 [ 16.551269] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.551313] kthread+0x328/0x630 [ 16.551346] ret_from_fork+0x10/0x20 [ 16.551382] [ 16.551400] Freed by task 168: [ 16.551426] kasan_save_stack+0x3c/0x68 [ 16.551464] kasan_save_track+0x20/0x40 [ 16.551500] kasan_save_free_info+0x4c/0x78 [ 16.551548] __kasan_slab_free+0x6c/0x98 [ 16.551584] kfree+0x214/0x3c8 [ 16.551628] kmalloc_uaf_16+0x190/0x438 [ 16.551663] kunit_try_run_case+0x170/0x3f0 [ 16.551700] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.551752] kthread+0x328/0x630 [ 16.551784] ret_from_fork+0x10/0x20 [ 16.551839] [ 16.551871] The buggy address belongs to the object at fff00000c1375b60 [ 16.551871] which belongs to the cache kmalloc-16 of size 16 [ 16.551937] The buggy address is located 0 bytes inside of [ 16.551937] freed 16-byte region [fff00000c1375b60, fff00000c1375b70) [ 16.551997] [ 16.552036] The buggy address belongs to the physical page: [ 16.552068] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101375 [ 16.552130] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.552179] page_type: f5(slab) [ 16.552219] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.552278] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.552317] page dumped because: kasan: bad access detected [ 16.552356] [ 16.552373] Memory state around the buggy address: [ 16.552413] fff00000c1375a00: 00 07 fc fc fa fb fc fc fa fb fc fc 00 04 fc fc [ 16.552456] fff00000c1375a80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.552499] >fff00000c1375b00: fa fb fc fc fa fb fc fc 00 00 fc fc fa fb fc fc [ 16.552536] ^ [ 16.552573] fff00000c1375b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.552615] fff00000c1375c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.553118] ==================================================================
[ 12.682842] ================================================================== [ 12.683427] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 12.683718] Read of size 16 at addr ffff8881017e0420 by task kunit_try_catch/186 [ 12.684161] [ 12.684271] CPU: 0 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 12.684316] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.684328] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.684349] Call Trace: [ 12.684363] <TASK> [ 12.684379] dump_stack_lvl+0x73/0xb0 [ 12.684422] print_report+0xd1/0x610 [ 12.684446] ? __virt_addr_valid+0x1db/0x2d0 [ 12.684468] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.684489] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.684511] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.684531] kasan_report+0x141/0x180 [ 12.684553] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.684578] __asan_report_load16_noabort+0x18/0x20 [ 12.684603] kmalloc_uaf_16+0x47b/0x4c0 [ 12.684624] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 12.684647] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 12.684678] ? __pfx_read_tsc+0x10/0x10 [ 12.684698] ? ktime_get_ts64+0x86/0x230 [ 12.684724] kunit_try_run_case+0x1a5/0x480 [ 12.684748] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.684769] ? _raw_spin_lock_irqsave+0xf9/0x100 [ 12.684791] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.684814] ? __kthread_parkme+0x82/0x180 [ 12.684834] ? preempt_count_sub+0x50/0x80 [ 12.684858] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.684881] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.684904] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.684927] kthread+0x337/0x6f0 [ 12.684946] ? trace_preempt_on+0x20/0xc0 [ 12.684969] ? __pfx_kthread+0x10/0x10 [ 12.685001] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.685022] ? calculate_sigpending+0x7b/0xa0 [ 12.685061] ? __pfx_kthread+0x10/0x10 [ 12.685082] ret_from_fork+0x116/0x1d0 [ 12.685100] ? __pfx_kthread+0x10/0x10 [ 12.685120] ret_from_fork_asm+0x1a/0x30 [ 12.685152] </TASK> [ 12.685162] [ 12.692565] Allocated by task 186: [ 12.692736] kasan_save_stack+0x45/0x70 [ 12.692925] kasan_save_track+0x18/0x40 [ 12.693259] kasan_save_alloc_info+0x3b/0x50 [ 12.693498] __kasan_kmalloc+0xb7/0xc0 [ 12.693634] __kmalloc_cache_noprof+0x189/0x420 [ 12.693870] kmalloc_uaf_16+0x15b/0x4c0 [ 12.694129] kunit_try_run_case+0x1a5/0x480 [ 12.694337] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.694583] kthread+0x337/0x6f0 [ 12.694739] ret_from_fork+0x116/0x1d0 [ 12.694906] ret_from_fork_asm+0x1a/0x30 [ 12.695174] [ 12.695251] Freed by task 186: [ 12.695364] kasan_save_stack+0x45/0x70 [ 12.695577] kasan_save_track+0x18/0x40 [ 12.695795] kasan_save_free_info+0x3f/0x60 [ 12.695988] __kasan_slab_free+0x56/0x70 [ 12.696209] kfree+0x222/0x3f0 [ 12.696374] kmalloc_uaf_16+0x1d6/0x4c0 [ 12.696571] kunit_try_run_case+0x1a5/0x480 [ 12.696759] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.697001] kthread+0x337/0x6f0 [ 12.697217] ret_from_fork+0x116/0x1d0 [ 12.697389] ret_from_fork_asm+0x1a/0x30 [ 12.697585] [ 12.697673] The buggy address belongs to the object at ffff8881017e0420 [ 12.697673] which belongs to the cache kmalloc-16 of size 16 [ 12.698195] The buggy address is located 0 bytes inside of [ 12.698195] freed 16-byte region [ffff8881017e0420, ffff8881017e0430) [ 12.698853] [ 12.698939] The buggy address belongs to the physical page: [ 12.699249] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1017e0 [ 12.699645] flags: 0x200000000000000(node=0|zone=2) [ 12.699815] page_type: f5(slab) [ 12.699938] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.700172] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.700411] page dumped because: kasan: bad access detected [ 12.700584] [ 12.700654] Memory state around the buggy address: [ 12.700832] ffff8881017e0300: 00 04 fc fc 00 01 fc fc 00 01 fc fc 00 04 fc fc [ 12.701218] ffff8881017e0380: 00 04 fc fc 00 05 fc fc fa fb fc fc fa fb fc fc [ 12.701566] >ffff8881017e0400: 00 00 fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 12.701896] ^ [ 12.702391] ffff8881017e0480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.702933] ffff8881017e0500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.703820] ==================================================================
[ 12.803338] ================================================================== [ 12.803797] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 12.804244] Read of size 16 at addr ffff88810210ec40 by task kunit_try_catch/185 [ 12.804547] [ 12.804686] CPU: 1 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 12.804733] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.804745] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.804767] Call Trace: [ 12.804779] <TASK> [ 12.804797] dump_stack_lvl+0x73/0xb0 [ 12.804838] print_report+0xd1/0x610 [ 12.804860] ? __virt_addr_valid+0x1db/0x2d0 [ 12.804883] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.804914] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.804935] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.804955] kasan_report+0x141/0x180 [ 12.804977] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.805001] __asan_report_load16_noabort+0x18/0x20 [ 12.805024] kmalloc_uaf_16+0x47b/0x4c0 [ 12.805045] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 12.805066] ? __schedule+0x10c6/0x2b60 [ 12.805095] ? __pfx_read_tsc+0x10/0x10 [ 12.805116] ? ktime_get_ts64+0x86/0x230 [ 12.805140] kunit_try_run_case+0x1a5/0x480 [ 12.805182] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.805204] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.805227] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.805249] ? __kthread_parkme+0x82/0x180 [ 12.805270] ? preempt_count_sub+0x50/0x80 [ 12.805293] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.805329] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.805352] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.805384] kthread+0x337/0x6f0 [ 12.805402] ? trace_preempt_on+0x20/0xc0 [ 12.805425] ? __pfx_kthread+0x10/0x10 [ 12.805456] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.805476] ? calculate_sigpending+0x7b/0xa0 [ 12.805500] ? __pfx_kthread+0x10/0x10 [ 12.805520] ret_from_fork+0x116/0x1d0 [ 12.805538] ? __pfx_kthread+0x10/0x10 [ 12.805566] ret_from_fork_asm+0x1a/0x30 [ 12.805596] </TASK> [ 12.805606] [ 12.812396] Allocated by task 185: [ 12.812575] kasan_save_stack+0x45/0x70 [ 12.812807] kasan_save_track+0x18/0x40 [ 12.813028] kasan_save_alloc_info+0x3b/0x50 [ 12.813273] __kasan_kmalloc+0xb7/0xc0 [ 12.813644] __kmalloc_cache_noprof+0x189/0x420 [ 12.813809] kmalloc_uaf_16+0x15b/0x4c0 [ 12.813946] kunit_try_run_case+0x1a5/0x480 [ 12.814169] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.814538] kthread+0x337/0x6f0 [ 12.814708] ret_from_fork+0x116/0x1d0 [ 12.814862] ret_from_fork_asm+0x1a/0x30 [ 12.815003] [ 12.815073] Freed by task 185: [ 12.815222] kasan_save_stack+0x45/0x70 [ 12.815533] kasan_save_track+0x18/0x40 [ 12.815726] kasan_save_free_info+0x3f/0x60 [ 12.815960] __kasan_slab_free+0x56/0x70 [ 12.816125] kfree+0x222/0x3f0 [ 12.816254] kmalloc_uaf_16+0x1d6/0x4c0 [ 12.816396] kunit_try_run_case+0x1a5/0x480 [ 12.816544] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.816720] kthread+0x337/0x6f0 [ 12.816901] ret_from_fork+0x116/0x1d0 [ 12.817113] ret_from_fork_asm+0x1a/0x30 [ 12.817315] [ 12.817411] The buggy address belongs to the object at ffff88810210ec40 [ 12.817411] which belongs to the cache kmalloc-16 of size 16 [ 12.818050] The buggy address is located 0 bytes inside of [ 12.818050] freed 16-byte region [ffff88810210ec40, ffff88810210ec50) [ 12.818406] [ 12.818518] The buggy address belongs to the physical page: [ 12.818772] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10210e [ 12.819166] flags: 0x200000000000000(node=0|zone=2) [ 12.819593] page_type: f5(slab) [ 12.819772] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.820067] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.820449] page dumped because: kasan: bad access detected [ 12.820717] [ 12.820813] Memory state around the buggy address: [ 12.820988] ffff88810210eb00: 00 05 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 12.821217] ffff88810210eb80: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.821666] >ffff88810210ec00: fa fb fc fc 00 00 fc fc fa fb fc fc fc fc fc fc [ 12.821992] ^ [ 12.822233] ffff88810210ec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.822460] ffff88810210ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.822997] ==================================================================