Date
July 5, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.999925] ================================================================== [ 18.000018] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 18.000066] Read of size 1 at addr fff00000c44ecc00 by task kunit_try_catch/164 [ 18.000112] [ 18.000142] CPU: 0 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.000799] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.000897] Hardware name: linux,dummy-virt (DT) [ 18.001042] Call trace: [ 18.001169] show_stack+0x20/0x38 (C) [ 18.001358] dump_stack_lvl+0x8c/0xd0 [ 18.001435] print_report+0x118/0x608 [ 18.001507] kasan_report+0xdc/0x128 [ 18.001551] __kasan_check_byte+0x54/0x70 [ 18.001598] krealloc_noprof+0x44/0x360 [ 18.001642] krealloc_uaf+0x180/0x520 [ 18.001684] kunit_try_run_case+0x170/0x3f0 [ 18.001729] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.001778] kthread+0x328/0x630 [ 18.001821] ret_from_fork+0x10/0x20 [ 18.002071] [ 18.002209] Allocated by task 164: [ 18.002294] kasan_save_stack+0x3c/0x68 [ 18.002608] kasan_save_track+0x20/0x40 [ 18.002678] kasan_save_alloc_info+0x40/0x58 [ 18.002882] __kasan_kmalloc+0xd4/0xd8 [ 18.003081] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.003262] krealloc_uaf+0xc8/0x520 [ 18.003351] kunit_try_run_case+0x170/0x3f0 [ 18.003390] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.003691] kthread+0x328/0x630 [ 18.003853] ret_from_fork+0x10/0x20 [ 18.004095] [ 18.004348] Freed by task 164: [ 18.004512] kasan_save_stack+0x3c/0x68 [ 18.004732] kasan_save_track+0x20/0x40 [ 18.004857] kasan_save_free_info+0x4c/0x78 [ 18.004962] __kasan_slab_free+0x6c/0x98 [ 18.005001] kfree+0x214/0x3c8 [ 18.005033] krealloc_uaf+0x12c/0x520 [ 18.005067] kunit_try_run_case+0x170/0x3f0 [ 18.005103] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.005364] kthread+0x328/0x630 [ 18.005477] ret_from_fork+0x10/0x20 [ 18.005628] [ 18.005653] The buggy address belongs to the object at fff00000c44ecc00 [ 18.005653] which belongs to the cache kmalloc-256 of size 256 [ 18.005954] The buggy address is located 0 bytes inside of [ 18.005954] freed 256-byte region [fff00000c44ecc00, fff00000c44ecd00) [ 18.006199] [ 18.006298] The buggy address belongs to the physical page: [ 18.006367] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1044ec [ 18.006464] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 18.006582] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 18.006778] page_type: f5(slab) [ 18.006888] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.006990] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.007037] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.007381] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.007497] head: 0bfffe0000000001 ffffc1ffc3113b01 00000000ffffffff 00000000ffffffff [ 18.007620] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 18.007770] page dumped because: kasan: bad access detected [ 18.007800] [ 18.007818] Memory state around the buggy address: [ 18.008300] fff00000c44ecb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.008473] fff00000c44ecb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.008566] >fff00000c44ecc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.008603] ^ [ 18.008631] fff00000c44ecc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.008686] fff00000c44ecd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.008723] ================================================================== [ 18.009932] ================================================================== [ 18.009998] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 18.010297] Read of size 1 at addr fff00000c44ecc00 by task kunit_try_catch/164 [ 18.010359] [ 18.010406] CPU: 0 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.010550] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.010586] Hardware name: linux,dummy-virt (DT) [ 18.010615] Call trace: [ 18.010636] show_stack+0x20/0x38 (C) [ 18.010846] dump_stack_lvl+0x8c/0xd0 [ 18.010904] print_report+0x118/0x608 [ 18.010949] kasan_report+0xdc/0x128 [ 18.010998] __asan_report_load1_noabort+0x20/0x30 [ 18.011094] krealloc_uaf+0x4c8/0x520 [ 18.011138] kunit_try_run_case+0x170/0x3f0 [ 18.011224] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.011276] kthread+0x328/0x630 [ 18.011431] ret_from_fork+0x10/0x20 [ 18.011552] [ 18.011604] Allocated by task 164: [ 18.011643] kasan_save_stack+0x3c/0x68 [ 18.011686] kasan_save_track+0x20/0x40 [ 18.011722] kasan_save_alloc_info+0x40/0x58 [ 18.011759] __kasan_kmalloc+0xd4/0xd8 [ 18.011794] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.011831] krealloc_uaf+0xc8/0x520 [ 18.011864] kunit_try_run_case+0x170/0x3f0 [ 18.011963] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.012005] kthread+0x328/0x630 [ 18.012035] ret_from_fork+0x10/0x20 [ 18.012070] [ 18.012087] Freed by task 164: [ 18.012112] kasan_save_stack+0x3c/0x68 [ 18.012531] kasan_save_track+0x20/0x40 [ 18.012668] kasan_save_free_info+0x4c/0x78 [ 18.012775] __kasan_slab_free+0x6c/0x98 [ 18.012923] kfree+0x214/0x3c8 [ 18.012994] krealloc_uaf+0x12c/0x520 [ 18.013028] kunit_try_run_case+0x170/0x3f0 [ 18.013090] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.013386] kthread+0x328/0x630 [ 18.013470] ret_from_fork+0x10/0x20 [ 18.013527] [ 18.013702] The buggy address belongs to the object at fff00000c44ecc00 [ 18.013702] which belongs to the cache kmalloc-256 of size 256 [ 18.013890] The buggy address is located 0 bytes inside of [ 18.013890] freed 256-byte region [fff00000c44ecc00, fff00000c44ecd00) [ 18.013976] [ 18.014286] The buggy address belongs to the physical page: [ 18.014431] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1044ec [ 18.014533] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 18.014642] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 18.014743] page_type: f5(slab) [ 18.014779] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.015028] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.015161] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 18.015245] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.015357] head: 0bfffe0000000001 ffffc1ffc3113b01 00000000ffffffff 00000000ffffffff [ 18.015403] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 18.015468] page dumped because: kasan: bad access detected [ 18.015497] [ 18.015514] Memory state around the buggy address: [ 18.015544] fff00000c44ecb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.015585] fff00000c44ecb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.015635] >fff00000c44ecc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.015671] ^ [ 18.015706] fff00000c44ecc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.015746] fff00000c44ecd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.015781] ==================================================================
[ 13.473453] ================================================================== [ 13.474042] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 13.474389] Read of size 1 at addr ffff88810033a400 by task kunit_try_catch/182 [ 13.474823] [ 13.475271] CPU: 0 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.475331] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.475345] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.475370] Call Trace: [ 13.475385] <TASK> [ 13.475406] dump_stack_lvl+0x73/0xb0 [ 13.475446] print_report+0xd1/0x650 [ 13.475473] ? __virt_addr_valid+0x1db/0x2d0 [ 13.475501] ? krealloc_uaf+0x1b8/0x5e0 [ 13.475525] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.475550] ? krealloc_uaf+0x1b8/0x5e0 [ 13.475574] kasan_report+0x141/0x180 [ 13.475599] ? krealloc_uaf+0x1b8/0x5e0 [ 13.475626] ? krealloc_uaf+0x1b8/0x5e0 [ 13.475650] __kasan_check_byte+0x3d/0x50 [ 13.475675] krealloc_noprof+0x3f/0x340 [ 13.475701] krealloc_uaf+0x1b8/0x5e0 [ 13.475725] ? __pfx_krealloc_uaf+0x10/0x10 [ 13.475748] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 13.475784] ? __pfx_krealloc_uaf+0x10/0x10 [ 13.475828] kunit_try_run_case+0x1a5/0x480 [ 13.475858] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.475882] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.475911] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.475938] ? __kthread_parkme+0x82/0x180 [ 13.475966] ? preempt_count_sub+0x50/0x80 [ 13.475997] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.476025] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.476050] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.476076] kthread+0x337/0x6f0 [ 13.476098] ? trace_preempt_on+0x20/0xc0 [ 13.476126] ? __pfx_kthread+0x10/0x10 [ 13.476166] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.476191] ? calculate_sigpending+0x7b/0xa0 [ 13.476220] ? __pfx_kthread+0x10/0x10 [ 13.476244] ret_from_fork+0x116/0x1d0 [ 13.476268] ? __pfx_kthread+0x10/0x10 [ 13.476291] ret_from_fork_asm+0x1a/0x30 [ 13.476327] </TASK> [ 13.476341] [ 13.485912] Allocated by task 182: [ 13.486125] kasan_save_stack+0x45/0x70 [ 13.486303] kasan_save_track+0x18/0x40 [ 13.486459] kasan_save_alloc_info+0x3b/0x50 [ 13.486705] __kasan_kmalloc+0xb7/0xc0 [ 13.486978] __kmalloc_cache_noprof+0x189/0x420 [ 13.487565] krealloc_uaf+0xbb/0x5e0 [ 13.487738] kunit_try_run_case+0x1a5/0x480 [ 13.488443] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.488718] kthread+0x337/0x6f0 [ 13.489103] ret_from_fork+0x116/0x1d0 [ 13.489555] ret_from_fork_asm+0x1a/0x30 [ 13.489748] [ 13.489915] Freed by task 182: [ 13.490163] kasan_save_stack+0x45/0x70 [ 13.490416] kasan_save_track+0x18/0x40 [ 13.490572] kasan_save_free_info+0x3f/0x60 [ 13.490906] __kasan_slab_free+0x56/0x70 [ 13.491151] kfree+0x222/0x3f0 [ 13.491509] krealloc_uaf+0x13d/0x5e0 [ 13.491734] kunit_try_run_case+0x1a5/0x480 [ 13.491976] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.492618] kthread+0x337/0x6f0 [ 13.493005] ret_from_fork+0x116/0x1d0 [ 13.493278] ret_from_fork_asm+0x1a/0x30 [ 13.493709] [ 13.494034] The buggy address belongs to the object at ffff88810033a400 [ 13.494034] which belongs to the cache kmalloc-256 of size 256 [ 13.494903] The buggy address is located 0 bytes inside of [ 13.494903] freed 256-byte region [ffff88810033a400, ffff88810033a500) [ 13.495524] [ 13.495731] The buggy address belongs to the physical page: [ 13.496038] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10033a [ 13.496720] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 13.497551] flags: 0x200000000000040(head|node=0|zone=2) [ 13.497850] page_type: f5(slab) [ 13.498055] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 13.498496] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 13.499111] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 13.499687] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 13.500283] head: 0200000000000001 ffffea000400ce81 00000000ffffffff 00000000ffffffff [ 13.500654] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 13.501305] page dumped because: kasan: bad access detected [ 13.501713] [ 13.501836] Memory state around the buggy address: [ 13.502467] ffff88810033a300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.502842] ffff88810033a380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.503143] >ffff88810033a400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.503563] ^ [ 13.503746] ffff88810033a480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.504084] ffff88810033a500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.504417] ================================================================== [ 13.505051] ================================================================== [ 13.505362] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 13.505617] Read of size 1 at addr ffff88810033a400 by task kunit_try_catch/182 [ 13.506869] [ 13.507074] CPU: 0 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.507256] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.507274] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.507300] Call Trace: [ 13.507322] <TASK> [ 13.507345] dump_stack_lvl+0x73/0xb0 [ 13.507384] print_report+0xd1/0x650 [ 13.507410] ? __virt_addr_valid+0x1db/0x2d0 [ 13.507435] ? krealloc_uaf+0x53c/0x5e0 [ 13.507459] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.507483] ? krealloc_uaf+0x53c/0x5e0 [ 13.507506] kasan_report+0x141/0x180 [ 13.507530] ? krealloc_uaf+0x53c/0x5e0 [ 13.507558] __asan_report_load1_noabort+0x18/0x20 [ 13.508148] krealloc_uaf+0x53c/0x5e0 [ 13.508187] ? __pfx_krealloc_uaf+0x10/0x10 [ 13.508213] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 13.508249] ? __pfx_krealloc_uaf+0x10/0x10 [ 13.508278] kunit_try_run_case+0x1a5/0x480 [ 13.508306] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.508330] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.508356] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.508381] ? __kthread_parkme+0x82/0x180 [ 13.508404] ? preempt_count_sub+0x50/0x80 [ 13.508432] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.508458] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.508482] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.508507] kthread+0x337/0x6f0 [ 13.508528] ? trace_preempt_on+0x20/0xc0 [ 13.508553] ? __pfx_kthread+0x10/0x10 [ 13.508576] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.508600] ? calculate_sigpending+0x7b/0xa0 [ 13.508625] ? __pfx_kthread+0x10/0x10 [ 13.508649] ret_from_fork+0x116/0x1d0 [ 13.508672] ? __pfx_kthread+0x10/0x10 [ 13.508694] ret_from_fork_asm+0x1a/0x30 [ 13.508879] </TASK> [ 13.508900] [ 13.522116] Allocated by task 182: [ 13.522427] kasan_save_stack+0x45/0x70 [ 13.522687] kasan_save_track+0x18/0x40 [ 13.522936] kasan_save_alloc_info+0x3b/0x50 [ 13.523508] __kasan_kmalloc+0xb7/0xc0 [ 13.523749] __kmalloc_cache_noprof+0x189/0x420 [ 13.524032] krealloc_uaf+0xbb/0x5e0 [ 13.524310] kunit_try_run_case+0x1a5/0x480 [ 13.524489] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.524737] kthread+0x337/0x6f0 [ 13.524962] ret_from_fork+0x116/0x1d0 [ 13.525182] ret_from_fork_asm+0x1a/0x30 [ 13.525397] [ 13.525481] Freed by task 182: [ 13.525613] kasan_save_stack+0x45/0x70 [ 13.525873] kasan_save_track+0x18/0x40 [ 13.526185] kasan_save_free_info+0x3f/0x60 [ 13.526446] __kasan_slab_free+0x56/0x70 [ 13.526669] kfree+0x222/0x3f0 [ 13.526874] krealloc_uaf+0x13d/0x5e0 [ 13.527173] kunit_try_run_case+0x1a5/0x480 [ 13.527427] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.527659] kthread+0x337/0x6f0 [ 13.527812] ret_from_fork+0x116/0x1d0 [ 13.528034] ret_from_fork_asm+0x1a/0x30 [ 13.528554] [ 13.528673] The buggy address belongs to the object at ffff88810033a400 [ 13.528673] which belongs to the cache kmalloc-256 of size 256 [ 13.529137] The buggy address is located 0 bytes inside of [ 13.529137] freed 256-byte region [ffff88810033a400, ffff88810033a500) [ 13.529837] [ 13.529953] The buggy address belongs to the physical page: [ 13.530262] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10033a [ 13.530594] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 13.531068] flags: 0x200000000000040(head|node=0|zone=2) [ 13.531413] page_type: f5(slab) [ 13.531591] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 13.531954] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 13.532372] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 13.532716] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 13.533355] head: 0200000000000001 ffffea000400ce81 00000000ffffffff 00000000ffffffff [ 13.533739] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 13.534116] page dumped because: kasan: bad access detected [ 13.534360] [ 13.534472] Memory state around the buggy address: [ 13.534725] ffff88810033a300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.535109] ffff88810033a380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.535497] >ffff88810033a400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.535879] ^ [ 13.536099] ffff88810033a480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.536511] ffff88810033a500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.536851] ==================================================================