Date
July 9, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.664196] ================================================================== [ 16.664291] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 16.664340] Read of size 1 at addr fff00000c461d000 by task kunit_try_catch/164 [ 16.664395] [ 16.664716] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.664800] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.664865] Hardware name: linux,dummy-virt (DT) [ 16.664897] Call trace: [ 16.664924] show_stack+0x20/0x38 (C) [ 16.665035] dump_stack_lvl+0x8c/0xd0 [ 16.665128] print_report+0x118/0x608 [ 16.665201] kasan_report+0xdc/0x128 [ 16.665247] __asan_report_load1_noabort+0x20/0x30 [ 16.665546] krealloc_uaf+0x4c8/0x520 [ 16.666864] kunit_try_run_case+0x170/0x3f0 [ 16.666928] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.666980] kthread+0x328/0x630 [ 16.667023] ret_from_fork+0x10/0x20 [ 16.667070] [ 16.667088] Allocated by task 164: [ 16.667128] kasan_save_stack+0x3c/0x68 [ 16.667167] kasan_save_track+0x20/0x40 [ 16.667203] kasan_save_alloc_info+0x40/0x58 [ 16.667362] __kasan_kmalloc+0xd4/0xd8 [ 16.668798] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.668843] krealloc_uaf+0xc8/0x520 [ 16.668877] kunit_try_run_case+0x170/0x3f0 [ 16.668914] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.669427] kthread+0x328/0x630 [ 16.669488] ret_from_fork+0x10/0x20 [ 16.669562] [ 16.669580] Freed by task 164: [ 16.669606] kasan_save_stack+0x3c/0x68 [ 16.669643] kasan_save_track+0x20/0x40 [ 16.669679] kasan_save_free_info+0x4c/0x78 [ 16.669717] __kasan_slab_free+0x6c/0x98 [ 16.669798] kfree+0x214/0x3c8 [ 16.669860] krealloc_uaf+0x12c/0x520 [ 16.669943] kunit_try_run_case+0x170/0x3f0 [ 16.670043] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.670105] kthread+0x328/0x630 [ 16.670178] ret_from_fork+0x10/0x20 [ 16.670252] [ 16.670288] The buggy address belongs to the object at fff00000c461d000 [ 16.670288] which belongs to the cache kmalloc-256 of size 256 [ 16.670370] The buggy address is located 0 bytes inside of [ 16.670370] freed 256-byte region [fff00000c461d000, fff00000c461d100) [ 16.670563] [ 16.670593] The buggy address belongs to the physical page: [ 16.670625] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10461c [ 16.670680] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 16.670919] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 16.671017] page_type: f5(slab) [ 16.671123] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 16.671792] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.671960] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 16.672010] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.672080] head: 0bfffe0000000001 ffffc1ffc3118701 00000000ffffffff 00000000ffffffff [ 16.672140] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 16.672344] page dumped because: kasan: bad access detected [ 16.672493] [ 16.672512] Memory state around the buggy address: [ 16.672544] fff00000c461cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.672591] fff00000c461cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.672631] >fff00000c461d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.672669] ^ [ 16.672695] fff00000c461d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.672748] fff00000c461d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.672784] ================================================================== [ 16.653829] ================================================================== [ 16.653933] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 16.654008] Read of size 1 at addr fff00000c461d000 by task kunit_try_catch/164 [ 16.654057] [ 16.654100] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.654346] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.654372] Hardware name: linux,dummy-virt (DT) [ 16.654402] Call trace: [ 16.654425] show_stack+0x20/0x38 (C) [ 16.654474] dump_stack_lvl+0x8c/0xd0 [ 16.654522] print_report+0x118/0x608 [ 16.654567] kasan_report+0xdc/0x128 [ 16.654610] __kasan_check_byte+0x54/0x70 [ 16.654656] krealloc_noprof+0x44/0x360 [ 16.654707] krealloc_uaf+0x180/0x520 [ 16.654749] kunit_try_run_case+0x170/0x3f0 [ 16.654796] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.654846] kthread+0x328/0x630 [ 16.654887] ret_from_fork+0x10/0x20 [ 16.655174] [ 16.655284] Allocated by task 164: [ 16.655316] kasan_save_stack+0x3c/0x68 [ 16.655360] kasan_save_track+0x20/0x40 [ 16.655397] kasan_save_alloc_info+0x40/0x58 [ 16.655435] __kasan_kmalloc+0xd4/0xd8 [ 16.655477] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.656143] krealloc_uaf+0xc8/0x520 [ 16.656185] kunit_try_run_case+0x170/0x3f0 [ 16.656222] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.656264] kthread+0x328/0x630 [ 16.656803] ret_from_fork+0x10/0x20 [ 16.656894] [ 16.656987] Freed by task 164: [ 16.657026] kasan_save_stack+0x3c/0x68 [ 16.657086] kasan_save_track+0x20/0x40 [ 16.657282] kasan_save_free_info+0x4c/0x78 [ 16.657439] __kasan_slab_free+0x6c/0x98 [ 16.657476] kfree+0x214/0x3c8 [ 16.657508] krealloc_uaf+0x12c/0x520 [ 16.657556] kunit_try_run_case+0x170/0x3f0 [ 16.657592] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.657764] kthread+0x328/0x630 [ 16.657796] ret_from_fork+0x10/0x20 [ 16.657901] [ 16.658003] The buggy address belongs to the object at fff00000c461d000 [ 16.658003] which belongs to the cache kmalloc-256 of size 256 [ 16.658405] The buggy address is located 0 bytes inside of [ 16.658405] freed 256-byte region [fff00000c461d000, fff00000c461d100) [ 16.658475] [ 16.658496] The buggy address belongs to the physical page: [ 16.658530] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10461c [ 16.659267] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 16.659610] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 16.659712] page_type: f5(slab) [ 16.659793] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 16.659958] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.660025] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 16.660089] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.660276] head: 0bfffe0000000001 ffffc1ffc3118701 00000000ffffffff 00000000ffffffff [ 16.660750] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 16.660999] page dumped because: kasan: bad access detected [ 16.661097] [ 16.661128] Memory state around the buggy address: [ 16.661162] fff00000c461cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.661203] fff00000c461cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.661243] >fff00000c461d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.661575] ^ [ 16.661645] fff00000c461d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.661806] fff00000c461d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.661923] ==================================================================
[ 12.495919] ================================================================== [ 12.496368] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 12.496595] Read of size 1 at addr ffff888100350a00 by task kunit_try_catch/181 [ 12.497645] [ 12.498141] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.498255] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.498268] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.498288] Call Trace: [ 12.498300] <TASK> [ 12.498316] dump_stack_lvl+0x73/0xb0 [ 12.498348] print_report+0xd1/0x650 [ 12.498378] ? __virt_addr_valid+0x1db/0x2d0 [ 12.498400] ? krealloc_uaf+0x1b8/0x5e0 [ 12.498421] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.498443] ? krealloc_uaf+0x1b8/0x5e0 [ 12.498464] kasan_report+0x141/0x180 [ 12.498485] ? krealloc_uaf+0x1b8/0x5e0 [ 12.498509] ? krealloc_uaf+0x1b8/0x5e0 [ 12.498529] __kasan_check_byte+0x3d/0x50 [ 12.498551] krealloc_noprof+0x3f/0x340 [ 12.498573] krealloc_uaf+0x1b8/0x5e0 [ 12.498593] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.498614] ? finish_task_switch.isra.0+0x153/0x700 [ 12.498636] ? __switch_to+0x47/0xf50 [ 12.498660] ? __schedule+0x10cc/0x2b60 [ 12.498682] ? __pfx_read_tsc+0x10/0x10 [ 12.498713] ? ktime_get_ts64+0x86/0x230 [ 12.498737] kunit_try_run_case+0x1a5/0x480 [ 12.498760] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.498783] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.498805] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.498829] ? __kthread_parkme+0x82/0x180 [ 12.498849] ? preempt_count_sub+0x50/0x80 [ 12.498872] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.498895] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.498919] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.498944] kthread+0x337/0x6f0 [ 12.498962] ? trace_preempt_on+0x20/0xc0 [ 12.498985] ? __pfx_kthread+0x10/0x10 [ 12.499005] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.499032] ? calculate_sigpending+0x7b/0xa0 [ 12.499055] ? __pfx_kthread+0x10/0x10 [ 12.499076] ret_from_fork+0x116/0x1d0 [ 12.499093] ? __pfx_kthread+0x10/0x10 [ 12.499113] ret_from_fork_asm+0x1a/0x30 [ 12.499143] </TASK> [ 12.499153] [ 12.511583] Allocated by task 181: [ 12.511821] kasan_save_stack+0x45/0x70 [ 12.512187] kasan_save_track+0x18/0x40 [ 12.512402] kasan_save_alloc_info+0x3b/0x50 [ 12.512615] __kasan_kmalloc+0xb7/0xc0 [ 12.512861] __kmalloc_cache_noprof+0x189/0x420 [ 12.513204] krealloc_uaf+0xbb/0x5e0 [ 12.513372] kunit_try_run_case+0x1a5/0x480 [ 12.513560] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.513782] kthread+0x337/0x6f0 [ 12.513950] ret_from_fork+0x116/0x1d0 [ 12.514143] ret_from_fork_asm+0x1a/0x30 [ 12.514338] [ 12.514451] Freed by task 181: [ 12.514615] kasan_save_stack+0x45/0x70 [ 12.514768] kasan_save_track+0x18/0x40 [ 12.514903] kasan_save_free_info+0x3f/0x60 [ 12.515055] __kasan_slab_free+0x56/0x70 [ 12.515204] kfree+0x222/0x3f0 [ 12.515363] krealloc_uaf+0x13d/0x5e0 [ 12.515547] kunit_try_run_case+0x1a5/0x480 [ 12.516115] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.516381] kthread+0x337/0x6f0 [ 12.516549] ret_from_fork+0x116/0x1d0 [ 12.516746] ret_from_fork_asm+0x1a/0x30 [ 12.516989] [ 12.517192] The buggy address belongs to the object at ffff888100350a00 [ 12.517192] which belongs to the cache kmalloc-256 of size 256 [ 12.517697] The buggy address is located 0 bytes inside of [ 12.517697] freed 256-byte region [ffff888100350a00, ffff888100350b00) [ 12.518326] [ 12.518435] The buggy address belongs to the physical page: [ 12.518669] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100350 [ 12.519209] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.519569] flags: 0x200000000000040(head|node=0|zone=2) [ 12.519829] page_type: f5(slab) [ 12.519982] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.520417] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.520767] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.521119] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.521475] head: 0200000000000001 ffffea000400d401 00000000ffffffff 00000000ffffffff [ 12.521807] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.522210] page dumped because: kasan: bad access detected [ 12.522451] [ 12.522556] Memory state around the buggy address: [ 12.522785] ffff888100350900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.523310] ffff888100350980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.523626] >ffff888100350a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.523871] ^ [ 12.524144] ffff888100350a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.524474] ffff888100350b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.524772] ================================================================== [ 12.526692] ================================================================== [ 12.527347] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 12.527687] Read of size 1 at addr ffff888100350a00 by task kunit_try_catch/181 [ 12.527971] [ 12.528091] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.528132] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.528143] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.528162] Call Trace: [ 12.528178] <TASK> [ 12.528193] dump_stack_lvl+0x73/0xb0 [ 12.528221] print_report+0xd1/0x650 [ 12.528242] ? __virt_addr_valid+0x1db/0x2d0 [ 12.528265] ? krealloc_uaf+0x53c/0x5e0 [ 12.528285] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.528308] ? krealloc_uaf+0x53c/0x5e0 [ 12.528333] kasan_report+0x141/0x180 [ 12.528354] ? krealloc_uaf+0x53c/0x5e0 [ 12.528379] __asan_report_load1_noabort+0x18/0x20 [ 12.528404] krealloc_uaf+0x53c/0x5e0 [ 12.528424] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.528445] ? finish_task_switch.isra.0+0x153/0x700 [ 12.528467] ? __switch_to+0x47/0xf50 [ 12.528492] ? __schedule+0x10cc/0x2b60 [ 12.528513] ? __pfx_read_tsc+0x10/0x10 [ 12.528534] ? ktime_get_ts64+0x86/0x230 [ 12.528557] kunit_try_run_case+0x1a5/0x480 [ 12.528581] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.528603] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.528626] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.528649] ? __kthread_parkme+0x82/0x180 [ 12.528669] ? preempt_count_sub+0x50/0x80 [ 12.528692] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.528726] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.528750] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.528775] kthread+0x337/0x6f0 [ 12.528794] ? trace_preempt_on+0x20/0xc0 [ 12.528818] ? __pfx_kthread+0x10/0x10 [ 12.528838] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.528860] ? calculate_sigpending+0x7b/0xa0 [ 12.528883] ? __pfx_kthread+0x10/0x10 [ 12.528904] ret_from_fork+0x116/0x1d0 [ 12.528922] ? __pfx_kthread+0x10/0x10 [ 12.528941] ret_from_fork_asm+0x1a/0x30 [ 12.528971] </TASK> [ 12.528981] [ 12.540980] Allocated by task 181: [ 12.541189] kasan_save_stack+0x45/0x70 [ 12.541339] kasan_save_track+0x18/0x40 [ 12.541473] kasan_save_alloc_info+0x3b/0x50 [ 12.541621] __kasan_kmalloc+0xb7/0xc0 [ 12.541770] __kmalloc_cache_noprof+0x189/0x420 [ 12.541993] krealloc_uaf+0xbb/0x5e0 [ 12.542347] kunit_try_run_case+0x1a5/0x480 [ 12.542535] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.542746] kthread+0x337/0x6f0 [ 12.542912] ret_from_fork+0x116/0x1d0 [ 12.543198] ret_from_fork_asm+0x1a/0x30 [ 12.543393] [ 12.543468] Freed by task 181: [ 12.543626] kasan_save_stack+0x45/0x70 [ 12.543820] kasan_save_track+0x18/0x40 [ 12.544087] kasan_save_free_info+0x3f/0x60 [ 12.544282] __kasan_slab_free+0x56/0x70 [ 12.544454] kfree+0x222/0x3f0 [ 12.544615] krealloc_uaf+0x13d/0x5e0 [ 12.544761] kunit_try_run_case+0x1a5/0x480 [ 12.544967] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.545285] kthread+0x337/0x6f0 [ 12.545434] ret_from_fork+0x116/0x1d0 [ 12.545575] ret_from_fork_asm+0x1a/0x30 [ 12.545788] [ 12.545885] The buggy address belongs to the object at ffff888100350a00 [ 12.545885] which belongs to the cache kmalloc-256 of size 256 [ 12.546520] The buggy address is located 0 bytes inside of [ 12.546520] freed 256-byte region [ffff888100350a00, ffff888100350b00) [ 12.546995] [ 12.547221] The buggy address belongs to the physical page: [ 12.547444] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100350 [ 12.547736] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.547961] flags: 0x200000000000040(head|node=0|zone=2) [ 12.548290] page_type: f5(slab) [ 12.548464] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.548779] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.549075] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.549425] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.549781] head: 0200000000000001 ffffea000400d401 00000000ffffffff 00000000ffffffff [ 12.550260] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.550563] page dumped because: kasan: bad access detected [ 12.550791] [ 12.550881] Memory state around the buggy address: [ 12.551217] ffff888100350900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.551502] ffff888100350980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.551801] >ffff888100350a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.552176] ^ [ 12.552342] ffff888100350a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.552619] ffff888100350b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.552921] ==================================================================