Date
June 17, 2025, 3:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.550943] ================================================================== [ 21.551058] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 21.551150] Read of size 1 at addr fff00000c4771c00 by task kunit_try_catch/166 [ 21.551206] [ 21.551261] CPU: 0 UID: 0 PID: 166 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 21.551361] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.551390] Hardware name: linux,dummy-virt (DT) [ 21.551427] Call trace: [ 21.551454] show_stack+0x20/0x38 (C) [ 21.551511] dump_stack_lvl+0x8c/0xd0 [ 21.551565] print_report+0x118/0x608 [ 21.551614] kasan_report+0xdc/0x128 [ 21.551662] __kasan_check_byte+0x54/0x70 [ 21.551711] krealloc_noprof+0x44/0x360 [ 21.551857] krealloc_uaf+0x180/0x520 [ 21.551972] kunit_try_run_case+0x170/0x3f0 [ 21.552086] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.552198] kthread+0x328/0x630 [ 21.552284] ret_from_fork+0x10/0x20 [ 21.552385] [ 21.552426] Allocated by task 166: [ 21.552490] kasan_save_stack+0x3c/0x68 [ 21.552587] kasan_save_track+0x20/0x40 [ 21.552672] kasan_save_alloc_info+0x40/0x58 [ 21.552780] __kasan_kmalloc+0xd4/0xd8 [ 21.552868] __kmalloc_cache_noprof+0x16c/0x3c0 [ 21.552967] krealloc_uaf+0xc8/0x520 [ 21.553054] kunit_try_run_case+0x170/0x3f0 [ 21.553145] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.553250] kthread+0x328/0x630 [ 21.553381] ret_from_fork+0x10/0x20 [ 21.553467] [ 21.553510] Freed by task 166: [ 21.554012] kasan_save_stack+0x3c/0x68 [ 21.554123] kasan_save_track+0x20/0x40 [ 21.554217] kasan_save_free_info+0x4c/0x78 [ 21.554318] __kasan_slab_free+0x6c/0x98 [ 21.554417] kfree+0x214/0x3c8 [ 21.554503] krealloc_uaf+0x12c/0x520 [ 21.554737] kunit_try_run_case+0x170/0x3f0 [ 21.554952] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.555164] kthread+0x328/0x630 [ 21.555367] ret_from_fork+0x10/0x20 [ 21.555708] [ 21.555843] The buggy address belongs to the object at fff00000c4771c00 [ 21.555843] which belongs to the cache kmalloc-256 of size 256 [ 21.556227] The buggy address is located 0 bytes inside of [ 21.556227] freed 256-byte region [fff00000c4771c00, fff00000c4771d00) [ 21.556474] [ 21.556558] The buggy address belongs to the physical page: [ 21.556720] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104770 [ 21.556977] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 21.557355] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 21.557831] page_type: f5(slab) [ 21.557957] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 21.558142] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 21.558272] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 21.558367] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 21.558485] head: 0bfffe0000000001 ffffc1ffc311dc01 00000000ffffffff 00000000ffffffff [ 21.558603] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 21.558764] page dumped because: kasan: bad access detected [ 21.558850] [ 21.558896] Memory state around the buggy address: [ 21.558979] fff00000c4771b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.559085] fff00000c4771b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.559184] >fff00000c4771c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.559276] ^ [ 21.559347] fff00000c4771c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.559697] fff00000c4771d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.559809] ================================================================== [ 21.569161] ================================================================== [ 21.569563] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 21.569942] Read of size 1 at addr fff00000c4771c00 by task kunit_try_catch/166 [ 21.570055] [ 21.570133] CPU: 0 UID: 0 PID: 166 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 21.570370] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.570458] Hardware name: linux,dummy-virt (DT) [ 21.570540] Call trace: [ 21.570600] show_stack+0x20/0x38 (C) [ 21.570718] dump_stack_lvl+0x8c/0xd0 [ 21.570878] print_report+0x118/0x608 [ 21.571037] kasan_report+0xdc/0x128 [ 21.571147] __asan_report_load1_noabort+0x20/0x30 [ 21.571280] krealloc_uaf+0x4c8/0x520 [ 21.571433] kunit_try_run_case+0x170/0x3f0 [ 21.571598] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.571800] kthread+0x328/0x630 [ 21.571919] ret_from_fork+0x10/0x20 [ 21.572036] [ 21.572076] Allocated by task 166: [ 21.572150] kasan_save_stack+0x3c/0x68 [ 21.572247] kasan_save_track+0x20/0x40 [ 21.572357] kasan_save_alloc_info+0x40/0x58 [ 21.572455] __kasan_kmalloc+0xd4/0xd8 [ 21.572572] __kmalloc_cache_noprof+0x16c/0x3c0 [ 21.572705] krealloc_uaf+0xc8/0x520 [ 21.572944] kunit_try_run_case+0x170/0x3f0 [ 21.573044] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.573259] kthread+0x328/0x630 [ 21.573414] ret_from_fork+0x10/0x20 [ 21.573523] [ 21.573581] Freed by task 166: [ 21.573670] kasan_save_stack+0x3c/0x68 [ 21.573807] kasan_save_track+0x20/0x40 [ 21.573882] kasan_save_free_info+0x4c/0x78 [ 21.573951] __kasan_slab_free+0x6c/0x98 [ 21.574043] kfree+0x214/0x3c8 [ 21.574111] krealloc_uaf+0x12c/0x520 [ 21.574191] kunit_try_run_case+0x170/0x3f0 [ 21.574290] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.574384] kthread+0x328/0x630 [ 21.574464] ret_from_fork+0x10/0x20 [ 21.574575] [ 21.574640] The buggy address belongs to the object at fff00000c4771c00 [ 21.574640] which belongs to the cache kmalloc-256 of size 256 [ 21.574788] The buggy address is located 0 bytes inside of [ 21.574788] freed 256-byte region [fff00000c4771c00, fff00000c4771d00) [ 21.574938] [ 21.575003] The buggy address belongs to the physical page: [ 21.575079] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104770 [ 21.575221] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 21.575338] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 21.575461] page_type: f5(slab) [ 21.575552] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 21.575753] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 21.575913] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 21.576041] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 21.576171] head: 0bfffe0000000001 ffffc1ffc311dc01 00000000ffffffff 00000000ffffffff [ 21.576283] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 21.576385] page dumped because: kasan: bad access detected [ 21.576460] [ 21.576512] Memory state around the buggy address: [ 21.576623] fff00000c4771b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.576764] fff00000c4771b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.576862] >fff00000c4771c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.576945] ^ [ 21.577014] fff00000c4771c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.577158] fff00000c4771d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.577269] ==================================================================
[ 19.020246] ================================================================== [ 19.021609] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 19.022223] Read of size 1 at addr ffff888100aab600 by task kunit_try_catch/184 [ 19.023026] [ 19.023267] CPU: 1 UID: 0 PID: 184 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 19.023397] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.023430] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.023479] Call Trace: [ 19.023511] <TASK> [ 19.023552] dump_stack_lvl+0x73/0xb0 [ 19.023640] print_report+0xd1/0x650 [ 19.023727] ? __virt_addr_valid+0x1db/0x2d0 [ 19.023832] ? krealloc_uaf+0x53c/0x5e0 [ 19.023989] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.024121] ? krealloc_uaf+0x53c/0x5e0 [ 19.024219] kasan_report+0x141/0x180 [ 19.024345] ? krealloc_uaf+0x53c/0x5e0 [ 19.024432] __asan_report_load1_noabort+0x18/0x20 [ 19.024513] krealloc_uaf+0x53c/0x5e0 [ 19.024587] ? __pfx_krealloc_uaf+0x10/0x10 [ 19.024678] ? finish_task_switch.isra.0+0x153/0x700 [ 19.024820] ? __switch_to+0x5d9/0xf60 [ 19.024896] ? dequeue_task_fair+0x166/0x4e0 [ 19.025069] ? __schedule+0x10cc/0x2b60 [ 19.025182] ? __pfx_read_tsc+0x10/0x10 [ 19.025261] ? ktime_get_ts64+0x86/0x230 [ 19.025356] kunit_try_run_case+0x1a5/0x480 [ 19.025404] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.025444] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.025484] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.025520] ? __kthread_parkme+0x82/0x180 [ 19.025556] ? preempt_count_sub+0x50/0x80 [ 19.025595] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.025633] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.025669] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.025705] kthread+0x337/0x6f0 [ 19.025732] ? trace_preempt_on+0x20/0xc0 [ 19.025771] ? __pfx_kthread+0x10/0x10 [ 19.025799] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.025833] ? calculate_sigpending+0x7b/0xa0 [ 19.025894] ? __pfx_kthread+0x10/0x10 [ 19.026010] ret_from_fork+0x41/0x80 [ 19.026101] ? __pfx_kthread+0x10/0x10 [ 19.026136] ret_from_fork_asm+0x1a/0x30 [ 19.026186] </TASK> [ 19.026202] [ 19.048686] Allocated by task 184: [ 19.048966] kasan_save_stack+0x45/0x70 [ 19.049453] kasan_save_track+0x18/0x40 [ 19.049874] kasan_save_alloc_info+0x3b/0x50 [ 19.051356] __kasan_kmalloc+0xb7/0xc0 [ 19.051810] __kmalloc_cache_noprof+0x189/0x420 [ 19.052170] krealloc_uaf+0xbb/0x5e0 [ 19.052466] kunit_try_run_case+0x1a5/0x480 [ 19.052854] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.054405] kthread+0x337/0x6f0 [ 19.055812] ret_from_fork+0x41/0x80 [ 19.057181] ret_from_fork_asm+0x1a/0x30 [ 19.058338] [ 19.058507] Freed by task 184: [ 19.058722] kasan_save_stack+0x45/0x70 [ 19.058989] kasan_save_track+0x18/0x40 [ 19.059341] kasan_save_free_info+0x3f/0x60 [ 19.059654] __kasan_slab_free+0x56/0x70 [ 19.059920] kfree+0x222/0x3f0 [ 19.060153] krealloc_uaf+0x13d/0x5e0 [ 19.063523] kunit_try_run_case+0x1a5/0x480 [ 19.065939] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.066511] kthread+0x337/0x6f0 [ 19.066762] ret_from_fork+0x41/0x80 [ 19.067215] ret_from_fork_asm+0x1a/0x30 [ 19.068271] [ 19.068631] The buggy address belongs to the object at ffff888100aab600 [ 19.068631] which belongs to the cache kmalloc-256 of size 256 [ 19.070967] The buggy address is located 0 bytes inside of [ 19.070967] freed 256-byte region [ffff888100aab600, ffff888100aab700) [ 19.071871] [ 19.072091] The buggy address belongs to the physical page: [ 19.073304] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100aaa [ 19.074186] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.075747] flags: 0x200000000000040(head|node=0|zone=2) [ 19.076279] page_type: f5(slab) [ 19.076639] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 19.077271] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.078079] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 19.078952] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.079628] head: 0200000000000001 ffffea000402aa81 00000000ffffffff 00000000ffffffff [ 19.080513] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 19.081406] page dumped because: kasan: bad access detected [ 19.082163] [ 19.082440] Memory state around the buggy address: [ 19.082860] ffff888100aab500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.083602] ffff888100aab580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.084131] >ffff888100aab600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.084764] ^ [ 19.085085] ffff888100aab680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.085795] ffff888100aab700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.086589] ================================================================== [ 18.955405] ================================================================== [ 18.957278] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 18.957888] Read of size 1 at addr ffff888100aab600 by task kunit_try_catch/184 [ 18.958417] [ 18.959418] CPU: 1 UID: 0 PID: 184 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 18.959553] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.959595] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.959782] Call Trace: [ 18.959820] <TASK> [ 18.959864] dump_stack_lvl+0x73/0xb0 [ 18.959927] print_report+0xd1/0x650 [ 18.960103] ? __virt_addr_valid+0x1db/0x2d0 [ 18.960155] ? krealloc_uaf+0x1b8/0x5e0 [ 18.960188] ? kasan_complete_mode_report_info+0x64/0x200 [ 18.960226] ? krealloc_uaf+0x1b8/0x5e0 [ 18.960256] kasan_report+0x141/0x180 [ 18.960319] ? krealloc_uaf+0x1b8/0x5e0 [ 18.960359] ? krealloc_uaf+0x1b8/0x5e0 [ 18.960391] __kasan_check_byte+0x3d/0x50 [ 18.960428] krealloc_noprof+0x3f/0x340 [ 18.960469] krealloc_uaf+0x1b8/0x5e0 [ 18.960500] ? __pfx_krealloc_uaf+0x10/0x10 [ 18.960529] ? finish_task_switch.isra.0+0x153/0x700 [ 18.960570] ? __switch_to+0x5d9/0xf60 [ 18.960606] ? dequeue_task_fair+0x166/0x4e0 [ 18.960645] ? __schedule+0x10cc/0x2b60 [ 18.960684] ? __pfx_read_tsc+0x10/0x10 [ 18.960719] ? ktime_get_ts64+0x86/0x230 [ 18.960761] kunit_try_run_case+0x1a5/0x480 [ 18.960806] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.960844] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 18.960884] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.960922] ? __kthread_parkme+0x82/0x180 [ 18.960995] ? preempt_count_sub+0x50/0x80 [ 18.961085] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.961149] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.961190] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.961229] kthread+0x337/0x6f0 [ 18.961258] ? trace_preempt_on+0x20/0xc0 [ 18.961322] ? __pfx_kthread+0x10/0x10 [ 18.961355] ? _raw_spin_unlock_irq+0x47/0x80 [ 18.961392] ? calculate_sigpending+0x7b/0xa0 [ 18.961429] ? __pfx_kthread+0x10/0x10 [ 18.961459] ret_from_fork+0x41/0x80 [ 18.961497] ? __pfx_kthread+0x10/0x10 [ 18.961527] ret_from_fork_asm+0x1a/0x30 [ 18.961576] </TASK> [ 18.961591] [ 18.985060] Allocated by task 184: [ 18.985876] kasan_save_stack+0x45/0x70 [ 18.986536] kasan_save_track+0x18/0x40 [ 18.986922] kasan_save_alloc_info+0x3b/0x50 [ 18.987474] __kasan_kmalloc+0xb7/0xc0 [ 18.987834] __kmalloc_cache_noprof+0x189/0x420 [ 18.989080] krealloc_uaf+0xbb/0x5e0 [ 18.989535] kunit_try_run_case+0x1a5/0x480 [ 18.990473] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.990906] kthread+0x337/0x6f0 [ 18.991843] ret_from_fork+0x41/0x80 [ 18.992721] ret_from_fork_asm+0x1a/0x30 [ 18.992904] [ 18.993170] Freed by task 184: [ 18.994157] kasan_save_stack+0x45/0x70 [ 18.994641] kasan_save_track+0x18/0x40 [ 18.995638] kasan_save_free_info+0x3f/0x60 [ 18.995837] __kasan_slab_free+0x56/0x70 [ 18.996054] kfree+0x222/0x3f0 [ 18.996253] krealloc_uaf+0x13d/0x5e0 [ 18.996558] kunit_try_run_case+0x1a5/0x480 [ 18.997248] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.998387] kthread+0x337/0x6f0 [ 18.998804] ret_from_fork+0x41/0x80 [ 18.999727] ret_from_fork_asm+0x1a/0x30 [ 19.000731] [ 19.001181] The buggy address belongs to the object at ffff888100aab600 [ 19.001181] which belongs to the cache kmalloc-256 of size 256 [ 19.002834] The buggy address is located 0 bytes inside of [ 19.002834] freed 256-byte region [ffff888100aab600, ffff888100aab700) [ 19.003909] [ 19.004464] The buggy address belongs to the physical page: [ 19.005103] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100aaa [ 19.005873] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.006700] flags: 0x200000000000040(head|node=0|zone=2) [ 19.007579] page_type: f5(slab) [ 19.007941] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 19.008835] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.009450] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 19.010560] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.011247] head: 0200000000000001 ffffea000402aa81 00000000ffffffff 00000000ffffffff [ 19.012211] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 19.012773] page dumped because: kasan: bad access detected [ 19.013275] [ 19.013500] Memory state around the buggy address: [ 19.013975] ffff888100aab500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.014738] ffff888100aab580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.015376] >ffff888100aab600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.016023] ^ [ 19.016572] ffff888100aab680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.017347] ffff888100aab700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.018008] ==================================================================