Date
July 5, 2025, 5:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.241663] ================================================================== [ 18.241749] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 18.241819] Read of size 1 at addr fff00000c47a5c00 by task kunit_try_catch/164 [ 18.242215] [ 18.242268] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.242597] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.242639] Hardware name: linux,dummy-virt (DT) [ 18.242781] Call trace: [ 18.242822] show_stack+0x20/0x38 (C) [ 18.242937] dump_stack_lvl+0x8c/0xd0 [ 18.243043] print_report+0x118/0x608 [ 18.243284] kasan_report+0xdc/0x128 [ 18.243498] __kasan_check_byte+0x54/0x70 [ 18.243555] krealloc_noprof+0x44/0x360 [ 18.243711] krealloc_uaf+0x180/0x520 [ 18.243795] kunit_try_run_case+0x170/0x3f0 [ 18.244045] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.244192] kthread+0x328/0x630 [ 18.244348] ret_from_fork+0x10/0x20 [ 18.244464] [ 18.244522] Allocated by task 164: [ 18.244749] kasan_save_stack+0x3c/0x68 [ 18.245010] kasan_save_track+0x20/0x40 [ 18.245177] kasan_save_alloc_info+0x40/0x58 [ 18.245333] __kasan_kmalloc+0xd4/0xd8 [ 18.245389] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.245636] krealloc_uaf+0xc8/0x520 [ 18.245683] kunit_try_run_case+0x170/0x3f0 [ 18.246221] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.246321] kthread+0x328/0x630 [ 18.246356] ret_from_fork+0x10/0x20 [ 18.246392] [ 18.246620] Freed by task 164: [ 18.246903] kasan_save_stack+0x3c/0x68 [ 18.247059] kasan_save_track+0x20/0x40 [ 18.247113] kasan_save_free_info+0x4c/0x78 [ 18.247161] __kasan_slab_free+0x6c/0x98 [ 18.247203] kfree+0x214/0x3c8 [ 18.247235] krealloc_uaf+0x12c/0x520 [ 18.247269] kunit_try_run_case+0x170/0x3f0 [ 18.247573] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.247768] kthread+0x328/0x630 [ 18.247918] ret_from_fork+0x10/0x20 [ 18.248065] [ 18.248213] The buggy address belongs to the object at fff00000c47a5c00 [ 18.248213] which belongs to the cache kmalloc-256 of size 256 [ 18.248933] The buggy address is located 0 bytes inside of [ 18.248933] freed 256-byte region [fff00000c47a5c00, fff00000c47a5d00) [ 18.249086] [ 18.249123] The buggy address belongs to the physical page: [ 18.249235] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1047a4 [ 18.249423] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 18.249471] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 18.249551] page_type: f5(slab) [ 18.249600] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.249657] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.249704] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.249749] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.249795] head: 0bfffe0000000001 ffffc1ffc311e901 00000000ffffffff 00000000ffffffff [ 18.249841] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 18.249888] page dumped because: kasan: bad access detected [ 18.249918] [ 18.249936] Memory state around the buggy address: [ 18.250002] fff00000c47a5b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.250044] fff00000c47a5b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.250084] >fff00000c47a5c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.250122] ^ [ 18.250175] fff00000c47a5c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.250214] fff00000c47a5d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.250250] ================================================================== [ 18.252091] ================================================================== [ 18.252143] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 18.252188] Read of size 1 at addr fff00000c47a5c00 by task kunit_try_catch/164 [ 18.252546] [ 18.252742] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.252830] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.252856] Hardware name: linux,dummy-virt (DT) [ 18.252900] Call trace: [ 18.252921] show_stack+0x20/0x38 (C) [ 18.252972] dump_stack_lvl+0x8c/0xd0 [ 18.253402] print_report+0x118/0x608 [ 18.253483] kasan_report+0xdc/0x128 [ 18.253529] __asan_report_load1_noabort+0x20/0x30 [ 18.253789] krealloc_uaf+0x4c8/0x520 [ 18.253843] kunit_try_run_case+0x170/0x3f0 [ 18.254013] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.254078] kthread+0x328/0x630 [ 18.254275] ret_from_fork+0x10/0x20 [ 18.254745] [ 18.254987] Allocated by task 164: [ 18.255021] kasan_save_stack+0x3c/0x68 [ 18.255216] kasan_save_track+0x20/0x40 [ 18.255831] kasan_save_alloc_info+0x40/0x58 [ 18.255924] __kasan_kmalloc+0xd4/0xd8 [ 18.255992] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.256055] krealloc_uaf+0xc8/0x520 [ 18.256222] kunit_try_run_case+0x170/0x3f0 [ 18.256289] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.256340] kthread+0x328/0x630 [ 18.256753] ret_from_fork+0x10/0x20 [ 18.256890] [ 18.257029] Freed by task 164: [ 18.257231] kasan_save_stack+0x3c/0x68 [ 18.257387] kasan_save_track+0x20/0x40 [ 18.257591] kasan_save_free_info+0x4c/0x78 [ 18.257793] __kasan_slab_free+0x6c/0x98 [ 18.258009] kfree+0x214/0x3c8 [ 18.258078] krealloc_uaf+0x12c/0x520 [ 18.258181] kunit_try_run_case+0x170/0x3f0 [ 18.258218] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.258260] kthread+0x328/0x630 [ 18.258292] ret_from_fork+0x10/0x20 [ 18.258344] [ 18.258379] The buggy address belongs to the object at fff00000c47a5c00 [ 18.258379] which belongs to the cache kmalloc-256 of size 256 [ 18.258434] The buggy address is located 0 bytes inside of [ 18.258434] freed 256-byte region [fff00000c47a5c00, fff00000c47a5d00) [ 18.258492] [ 18.258512] The buggy address belongs to the physical page: [ 18.258550] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1047a4 [ 18.258608] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 18.258662] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 18.258710] page_type: f5(slab) [ 18.258973] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.259599] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.259737] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.260118] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.260191] head: 0bfffe0000000001 ffffc1ffc311e901 00000000ffffffff 00000000ffffffff [ 18.260341] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 18.260424] page dumped because: kasan: bad access detected [ 18.260746] [ 18.260912] Memory state around the buggy address: [ 18.260975] fff00000c47a5b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.261296] fff00000c47a5b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.261366] >fff00000c47a5c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.261470] ^ [ 18.261567] fff00000c47a5c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.261633] fff00000c47a5d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.261670] ==================================================================
[ 11.538972] ================================================================== [ 11.539785] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 11.540126] Read of size 1 at addr ffff888100ab4200 by task kunit_try_catch/182 [ 11.540449] [ 11.540588] CPU: 1 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.540648] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.540727] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.540750] Call Trace: [ 11.540763] <TASK> [ 11.540779] dump_stack_lvl+0x73/0xb0 [ 11.540808] print_report+0xd1/0x650 [ 11.540831] ? __virt_addr_valid+0x1db/0x2d0 [ 11.540874] ? krealloc_uaf+0x1b8/0x5e0 [ 11.540896] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.540931] ? krealloc_uaf+0x1b8/0x5e0 [ 11.540952] kasan_report+0x141/0x180 [ 11.540973] ? krealloc_uaf+0x1b8/0x5e0 [ 11.540997] ? krealloc_uaf+0x1b8/0x5e0 [ 11.541018] __kasan_check_byte+0x3d/0x50 [ 11.541039] krealloc_noprof+0x3f/0x340 [ 11.541061] krealloc_uaf+0x1b8/0x5e0 [ 11.541082] ? __pfx_krealloc_uaf+0x10/0x10 [ 11.541102] ? finish_task_switch.isra.0+0x153/0x700 [ 11.541124] ? __switch_to+0x47/0xf50 [ 11.541150] ? __schedule+0x10cc/0x2b60 [ 11.541171] ? __pfx_read_tsc+0x10/0x10 [ 11.541240] ? ktime_get_ts64+0x86/0x230 [ 11.541268] kunit_try_run_case+0x1a5/0x480 [ 11.541293] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.541314] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.541336] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.541358] ? __kthread_parkme+0x82/0x180 [ 11.541383] ? preempt_count_sub+0x50/0x80 [ 11.541405] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.541427] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.541449] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.541481] kthread+0x337/0x6f0 [ 11.541500] ? trace_preempt_on+0x20/0xc0 [ 11.541523] ? __pfx_kthread+0x10/0x10 [ 11.541542] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.541562] ? calculate_sigpending+0x7b/0xa0 [ 11.541586] ? __pfx_kthread+0x10/0x10 [ 11.541606] ret_from_fork+0x116/0x1d0 [ 11.541623] ? __pfx_kthread+0x10/0x10 [ 11.541643] ret_from_fork_asm+0x1a/0x30 [ 11.541673] </TASK> [ 11.541683] [ 11.550257] Allocated by task 182: [ 11.550448] kasan_save_stack+0x45/0x70 [ 11.550682] kasan_save_track+0x18/0x40 [ 11.550886] kasan_save_alloc_info+0x3b/0x50 [ 11.551130] __kasan_kmalloc+0xb7/0xc0 [ 11.551326] __kmalloc_cache_noprof+0x189/0x420 [ 11.551557] krealloc_uaf+0xbb/0x5e0 [ 11.551737] kunit_try_run_case+0x1a5/0x480 [ 11.551987] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.552165] kthread+0x337/0x6f0 [ 11.552281] ret_from_fork+0x116/0x1d0 [ 11.552598] ret_from_fork_asm+0x1a/0x30 [ 11.552995] [ 11.553136] Freed by task 182: [ 11.553559] kasan_save_stack+0x45/0x70 [ 11.553788] kasan_save_track+0x18/0x40 [ 11.553954] kasan_save_free_info+0x3f/0x60 [ 11.554098] __kasan_slab_free+0x56/0x70 [ 11.554364] kfree+0x222/0x3f0 [ 11.554547] krealloc_uaf+0x13d/0x5e0 [ 11.554783] kunit_try_run_case+0x1a5/0x480 [ 11.554995] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.555317] kthread+0x337/0x6f0 [ 11.555444] ret_from_fork+0x116/0x1d0 [ 11.555585] ret_from_fork_asm+0x1a/0x30 [ 11.555762] [ 11.555932] The buggy address belongs to the object at ffff888100ab4200 [ 11.555932] which belongs to the cache kmalloc-256 of size 256 [ 11.556690] The buggy address is located 0 bytes inside of [ 11.556690] freed 256-byte region [ffff888100ab4200, ffff888100ab4300) [ 11.557093] [ 11.557166] The buggy address belongs to the physical page: [ 11.557340] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100ab4 [ 11.557710] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 11.558057] flags: 0x200000000000040(head|node=0|zone=2) [ 11.558600] page_type: f5(slab) [ 11.558784] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.559164] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.559517] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.559746] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.560189] head: 0200000000000001 ffffea000402ad01 00000000ffffffff 00000000ffffffff [ 11.560810] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 11.561188] page dumped because: kasan: bad access detected [ 11.561555] [ 11.561674] Memory state around the buggy address: [ 11.561830] ffff888100ab4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.562153] ffff888100ab4180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.562632] >ffff888100ab4200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.562967] ^ [ 11.563085] ffff888100ab4280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.563616] ffff888100ab4300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.563968] ================================================================== [ 11.564714] ================================================================== [ 11.565059] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 11.565664] Read of size 1 at addr ffff888100ab4200 by task kunit_try_catch/182 [ 11.566009] [ 11.566115] CPU: 1 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.566156] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.566168] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.566188] Call Trace: [ 11.566475] <TASK> [ 11.566494] dump_stack_lvl+0x73/0xb0 [ 11.566524] print_report+0xd1/0x650 [ 11.566567] ? __virt_addr_valid+0x1db/0x2d0 [ 11.566589] ? krealloc_uaf+0x53c/0x5e0 [ 11.566610] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.566631] ? krealloc_uaf+0x53c/0x5e0 [ 11.566651] kasan_report+0x141/0x180 [ 11.566673] ? krealloc_uaf+0x53c/0x5e0 [ 11.566698] __asan_report_load1_noabort+0x18/0x20 [ 11.566722] krealloc_uaf+0x53c/0x5e0 [ 11.566761] ? __pfx_krealloc_uaf+0x10/0x10 [ 11.566782] ? finish_task_switch.isra.0+0x153/0x700 [ 11.566803] ? __switch_to+0x47/0xf50 [ 11.566828] ? __schedule+0x10cc/0x2b60 [ 11.566850] ? __pfx_read_tsc+0x10/0x10 [ 11.566870] ? ktime_get_ts64+0x86/0x230 [ 11.566908] kunit_try_run_case+0x1a5/0x480 [ 11.566931] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.566952] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.566974] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.566996] ? __kthread_parkme+0x82/0x180 [ 11.567015] ? preempt_count_sub+0x50/0x80 [ 11.567036] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.567059] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.567080] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.567102] kthread+0x337/0x6f0 [ 11.567121] ? trace_preempt_on+0x20/0xc0 [ 11.567143] ? __pfx_kthread+0x10/0x10 [ 11.567163] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.567183] ? calculate_sigpending+0x7b/0xa0 [ 11.567205] ? __pfx_kthread+0x10/0x10 [ 11.567225] ret_from_fork+0x116/0x1d0 [ 11.567303] ? __pfx_kthread+0x10/0x10 [ 11.567326] ret_from_fork_asm+0x1a/0x30 [ 11.567356] </TASK> [ 11.567368] [ 11.575995] Allocated by task 182: [ 11.576160] kasan_save_stack+0x45/0x70 [ 11.576441] kasan_save_track+0x18/0x40 [ 11.576594] kasan_save_alloc_info+0x3b/0x50 [ 11.576960] __kasan_kmalloc+0xb7/0xc0 [ 11.577144] __kmalloc_cache_noprof+0x189/0x420 [ 11.577466] krealloc_uaf+0xbb/0x5e0 [ 11.577643] kunit_try_run_case+0x1a5/0x480 [ 11.577913] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.578106] kthread+0x337/0x6f0 [ 11.578306] ret_from_fork+0x116/0x1d0 [ 11.578536] ret_from_fork_asm+0x1a/0x30 [ 11.578729] [ 11.578825] Freed by task 182: [ 11.579065] kasan_save_stack+0x45/0x70 [ 11.579250] kasan_save_track+0x18/0x40 [ 11.579435] kasan_save_free_info+0x3f/0x60 [ 11.579721] __kasan_slab_free+0x56/0x70 [ 11.579885] kfree+0x222/0x3f0 [ 11.579999] krealloc_uaf+0x13d/0x5e0 [ 11.580132] kunit_try_run_case+0x1a5/0x480 [ 11.580341] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.581024] kthread+0x337/0x6f0 [ 11.581176] ret_from_fork+0x116/0x1d0 [ 11.581448] ret_from_fork_asm+0x1a/0x30 [ 11.581637] [ 11.581771] The buggy address belongs to the object at ffff888100ab4200 [ 11.581771] which belongs to the cache kmalloc-256 of size 256 [ 11.582303] The buggy address is located 0 bytes inside of [ 11.582303] freed 256-byte region [ffff888100ab4200, ffff888100ab4300) [ 11.582847] [ 11.582944] The buggy address belongs to the physical page: [ 11.583164] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100ab4 [ 11.583573] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 11.584028] flags: 0x200000000000040(head|node=0|zone=2) [ 11.584326] page_type: f5(slab) [ 11.584504] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.584792] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.585021] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.585710] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.586334] head: 0200000000000001 ffffea000402ad01 00000000ffffffff 00000000ffffffff [ 11.586739] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 11.587078] page dumped because: kasan: bad access detected [ 11.587492] [ 11.587568] Memory state around the buggy address: [ 11.587724] ffff888100ab4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.588294] ffff888100ab4180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.588702] >ffff888100ab4200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.589018] ^ [ 11.589139] ffff888100ab4280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.589795] ffff888100ab4300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.590095] ==================================================================