Date
July 13, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.867212] ================================================================== [ 15.867292] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 15.867591] Read of size 16 at addr fff00000c5809520 by task kunit_try_catch/169 [ 15.867903] [ 15.867939] CPU: 0 UID: 0 PID: 169 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.868019] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.868118] Hardware name: linux,dummy-virt (DT) [ 15.868189] Call trace: [ 15.868234] show_stack+0x20/0x38 (C) [ 15.868629] dump_stack_lvl+0x8c/0xd0 [ 15.868753] print_report+0x118/0x5d0 [ 15.868902] kasan_report+0xdc/0x128 [ 15.868977] __asan_report_load16_noabort+0x20/0x30 [ 15.869116] kmalloc_uaf_16+0x3bc/0x438 [ 15.869220] kunit_try_run_case+0x170/0x3f0 [ 15.869293] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.869653] kthread+0x328/0x630 [ 15.869744] ret_from_fork+0x10/0x20 [ 15.869807] [ 15.869825] Allocated by task 169: [ 15.870096] kasan_save_stack+0x3c/0x68 [ 15.870168] kasan_save_track+0x20/0x40 [ 15.870244] kasan_save_alloc_info+0x40/0x58 [ 15.870410] __kasan_kmalloc+0xd4/0xd8 [ 15.870479] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.870584] kmalloc_uaf_16+0x140/0x438 [ 15.870631] kunit_try_run_case+0x170/0x3f0 [ 15.870679] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.870728] kthread+0x328/0x630 [ 15.870759] ret_from_fork+0x10/0x20 [ 15.870843] [ 15.870862] Freed by task 169: [ 15.870888] kasan_save_stack+0x3c/0x68 [ 15.870935] kasan_save_track+0x20/0x40 [ 15.870971] kasan_save_free_info+0x4c/0x78 [ 15.871025] __kasan_slab_free+0x6c/0x98 [ 15.871061] kfree+0x214/0x3c8 [ 15.871093] kmalloc_uaf_16+0x190/0x438 [ 15.871136] kunit_try_run_case+0x170/0x3f0 [ 15.871172] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.871238] kthread+0x328/0x630 [ 15.871269] ret_from_fork+0x10/0x20 [ 15.871304] [ 15.871330] The buggy address belongs to the object at fff00000c5809520 [ 15.871330] which belongs to the cache kmalloc-16 of size 16 [ 15.871395] The buggy address is located 0 bytes inside of [ 15.871395] freed 16-byte region [fff00000c5809520, fff00000c5809530) [ 15.871465] [ 15.871484] The buggy address belongs to the physical page: [ 15.871527] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105809 [ 15.871605] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.871652] page_type: f5(slab) [ 15.871707] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.871758] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.871797] page dumped because: kasan: bad access detected [ 15.871826] [ 15.871859] Memory state around the buggy address: [ 15.871889] fff00000c5809400: 00 00 fc fc 00 00 fc fc 00 00 fc fc fa fb fc fc [ 15.871930] fff00000c5809480: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.871988] >fff00000c5809500: 00 00 fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 15.872035] ^ [ 15.872079] fff00000c5809580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.872127] fff00000c5809600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.872166] ==================================================================
[ 16.673192] ================================================================== [ 16.673255] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 16.673349] Read of size 16 at addr fff00000c44aba80 by task kunit_try_catch/169 [ 16.673401] [ 16.673433] CPU: 1 UID: 0 PID: 169 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.673625] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.673720] Hardware name: linux,dummy-virt (DT) [ 16.673767] Call trace: [ 16.673789] show_stack+0x20/0x38 (C) [ 16.673878] dump_stack_lvl+0x8c/0xd0 [ 16.673943] print_report+0x118/0x5d0 [ 16.674038] kasan_report+0xdc/0x128 [ 16.674091] __asan_report_load16_noabort+0x20/0x30 [ 16.674142] kmalloc_uaf_16+0x3bc/0x438 [ 16.674404] kunit_try_run_case+0x170/0x3f0 [ 16.674523] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.674578] kthread+0x328/0x630 [ 16.674620] ret_from_fork+0x10/0x20 [ 16.674673] [ 16.674691] Allocated by task 169: [ 16.674720] kasan_save_stack+0x3c/0x68 [ 16.674759] kasan_save_track+0x20/0x40 [ 16.674794] kasan_save_alloc_info+0x40/0x58 [ 16.674832] __kasan_kmalloc+0xd4/0xd8 [ 16.674881] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.674919] kmalloc_uaf_16+0x140/0x438 [ 16.674952] kunit_try_run_case+0x170/0x3f0 [ 16.674988] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.675030] kthread+0x328/0x630 [ 16.675060] ret_from_fork+0x10/0x20 [ 16.675094] [ 16.675110] Freed by task 169: [ 16.675135] kasan_save_stack+0x3c/0x68 [ 16.675368] kasan_save_track+0x20/0x40 [ 16.675616] kasan_save_free_info+0x4c/0x78 [ 16.675709] __kasan_slab_free+0x6c/0x98 [ 16.675749] kfree+0x214/0x3c8 [ 16.675782] kmalloc_uaf_16+0x190/0x438 [ 16.675836] kunit_try_run_case+0x170/0x3f0 [ 16.675873] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.675951] kthread+0x328/0x630 [ 16.675984] ret_from_fork+0x10/0x20 [ 16.676018] [ 16.676127] The buggy address belongs to the object at fff00000c44aba80 [ 16.676127] which belongs to the cache kmalloc-16 of size 16 [ 16.676228] The buggy address is located 0 bytes inside of [ 16.676228] freed 16-byte region [fff00000c44aba80, fff00000c44aba90) [ 16.676354] [ 16.676391] The buggy address belongs to the physical page: [ 16.676439] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1044ab [ 16.676547] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.676675] page_type: f5(slab) [ 16.676779] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.676848] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.676910] page dumped because: kasan: bad access detected [ 16.677231] [ 16.677336] Memory state around the buggy address: [ 16.677417] fff00000c44ab980: 00 00 fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 16.677460] fff00000c44aba00: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc [ 16.677710] >fff00000c44aba80: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.677840] ^ [ 16.677960] fff00000c44abb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.678077] fff00000c44abb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.678133] ==================================================================
[ 12.602312] ================================================================== [ 12.602977] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 12.603217] Read of size 16 at addr ffff888102676200 by task kunit_try_catch/185 [ 12.603466] [ 12.603582] CPU: 0 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.603625] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.603636] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.603658] Call Trace: [ 12.603672] <TASK> [ 12.603686] dump_stack_lvl+0x73/0xb0 [ 12.603714] print_report+0xd1/0x610 [ 12.603737] ? __virt_addr_valid+0x1db/0x2d0 [ 12.603759] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.603779] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.603803] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.603825] kasan_report+0x141/0x180 [ 12.603847] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.603872] __asan_report_load16_noabort+0x18/0x20 [ 12.603898] kmalloc_uaf_16+0x47b/0x4c0 [ 12.603919] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 12.603941] ? __schedule+0x10cc/0x2b60 [ 12.603963] ? __pfx_read_tsc+0x10/0x10 [ 12.603984] ? ktime_get_ts64+0x86/0x230 [ 12.604007] kunit_try_run_case+0x1a5/0x480 [ 12.604032] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.604055] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.604079] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.604102] ? __kthread_parkme+0x82/0x180 [ 12.604533] ? preempt_count_sub+0x50/0x80 [ 12.604565] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.604593] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.604619] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.604645] kthread+0x337/0x6f0 [ 12.604665] ? trace_preempt_on+0x20/0xc0 [ 12.604690] ? __pfx_kthread+0x10/0x10 [ 12.604710] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.604732] ? calculate_sigpending+0x7b/0xa0 [ 12.604756] ? __pfx_kthread+0x10/0x10 [ 12.604777] ret_from_fork+0x116/0x1d0 [ 12.604796] ? __pfx_kthread+0x10/0x10 [ 12.604816] ret_from_fork_asm+0x1a/0x30 [ 12.604846] </TASK> [ 12.604856] [ 12.620005] Allocated by task 185: [ 12.620336] kasan_save_stack+0x45/0x70 [ 12.620748] kasan_save_track+0x18/0x40 [ 12.621417] kasan_save_alloc_info+0x3b/0x50 [ 12.622398] __kasan_kmalloc+0xb7/0xc0 [ 12.622716] __kmalloc_cache_noprof+0x189/0x420 [ 12.622883] kmalloc_uaf_16+0x15b/0x4c0 [ 12.623017] kunit_try_run_case+0x1a5/0x480 [ 12.623160] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.623333] kthread+0x337/0x6f0 [ 12.623467] ret_from_fork+0x116/0x1d0 [ 12.624523] ret_from_fork_asm+0x1a/0x30 [ 12.624892] [ 12.625174] Freed by task 185: [ 12.625798] kasan_save_stack+0x45/0x70 [ 12.627246] kasan_save_track+0x18/0x40 [ 12.627861] kasan_save_free_info+0x3f/0x60 [ 12.628378] __kasan_slab_free+0x56/0x70 [ 12.628966] kfree+0x222/0x3f0 [ 12.629424] kmalloc_uaf_16+0x1d6/0x4c0 [ 12.629961] kunit_try_run_case+0x1a5/0x480 [ 12.630118] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.630291] kthread+0x337/0x6f0 [ 12.630420] ret_from_fork+0x116/0x1d0 [ 12.631122] ret_from_fork_asm+0x1a/0x30 [ 12.631709] [ 12.631998] The buggy address belongs to the object at ffff888102676200 [ 12.631998] which belongs to the cache kmalloc-16 of size 16 [ 12.633490] The buggy address is located 0 bytes inside of [ 12.633490] freed 16-byte region [ffff888102676200, ffff888102676210) [ 12.634681] [ 12.634762] The buggy address belongs to the physical page: [ 12.634935] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102676 [ 12.635172] flags: 0x200000000000000(node=0|zone=2) [ 12.635335] page_type: f5(slab) [ 12.635930] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.636940] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.637898] page dumped because: kasan: bad access detected [ 12.638524] [ 12.638849] Memory state around the buggy address: [ 12.639368] ffff888102676100: 00 06 fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 12.640129] ffff888102676180: 00 05 fc fc fa fb fc fc fa fb fc fc 00 00 fc fc [ 12.640602] >ffff888102676200: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.640825] ^ [ 12.640947] ffff888102676280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.641165] ffff888102676300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.641379] ==================================================================
[ 12.897552] ================================================================== [ 12.898217] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 12.898567] Read of size 16 at addr ffff888102b01260 by task kunit_try_catch/186 [ 12.898793] [ 12.898961] CPU: 1 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.899093] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.899107] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.899138] Call Trace: [ 12.899149] <TASK> [ 12.899164] dump_stack_lvl+0x73/0xb0 [ 12.899194] print_report+0xd1/0x610 [ 12.899216] ? __virt_addr_valid+0x1db/0x2d0 [ 12.899240] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.899260] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.899283] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.899305] kasan_report+0x141/0x180 [ 12.899328] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.899355] __asan_report_load16_noabort+0x18/0x20 [ 12.899382] kmalloc_uaf_16+0x47b/0x4c0 [ 12.899403] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 12.899425] ? __schedule+0x10cc/0x2b60 [ 12.899448] ? __pfx_read_tsc+0x10/0x10 [ 12.899470] ? ktime_get_ts64+0x86/0x230 [ 12.899495] kunit_try_run_case+0x1a5/0x480 [ 12.899519] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.899542] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.899566] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.899590] ? __kthread_parkme+0x82/0x180 [ 12.899611] ? preempt_count_sub+0x50/0x80 [ 12.899635] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.899661] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.899686] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.899712] kthread+0x337/0x6f0 [ 12.899731] ? trace_preempt_on+0x20/0xc0 [ 12.899754] ? __pfx_kthread+0x10/0x10 [ 12.899775] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.899807] ? calculate_sigpending+0x7b/0xa0 [ 12.899831] ? __pfx_kthread+0x10/0x10 [ 12.899852] ret_from_fork+0x116/0x1d0 [ 12.899883] ? __pfx_kthread+0x10/0x10 [ 12.899904] ret_from_fork_asm+0x1a/0x30 [ 12.899935] </TASK> [ 12.899944] [ 12.907496] Allocated by task 186: [ 12.907676] kasan_save_stack+0x45/0x70 [ 12.908067] kasan_save_track+0x18/0x40 [ 12.908256] kasan_save_alloc_info+0x3b/0x50 [ 12.908472] __kasan_kmalloc+0xb7/0xc0 [ 12.908632] __kmalloc_cache_noprof+0x189/0x420 [ 12.908905] kmalloc_uaf_16+0x15b/0x4c0 [ 12.909099] kunit_try_run_case+0x1a5/0x480 [ 12.909332] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.909542] kthread+0x337/0x6f0 [ 12.909804] ret_from_fork+0x116/0x1d0 [ 12.910011] ret_from_fork_asm+0x1a/0x30 [ 12.910241] [ 12.910317] Freed by task 186: [ 12.910430] kasan_save_stack+0x45/0x70 [ 12.910566] kasan_save_track+0x18/0x40 [ 12.910752] kasan_save_free_info+0x3f/0x60 [ 12.910960] __kasan_slab_free+0x56/0x70 [ 12.911440] kfree+0x222/0x3f0 [ 12.911657] kmalloc_uaf_16+0x1d6/0x4c0 [ 12.911793] kunit_try_run_case+0x1a5/0x480 [ 12.911938] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.912343] kthread+0x337/0x6f0 [ 12.912519] ret_from_fork+0x116/0x1d0 [ 12.912733] ret_from_fork_asm+0x1a/0x30 [ 12.912947] [ 12.913115] The buggy address belongs to the object at ffff888102b01260 [ 12.913115] which belongs to the cache kmalloc-16 of size 16 [ 12.913744] The buggy address is located 0 bytes inside of [ 12.913744] freed 16-byte region [ffff888102b01260, ffff888102b01270) [ 12.914522] [ 12.914600] The buggy address belongs to the physical page: [ 12.914837] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b01 [ 12.915194] flags: 0x200000000000000(node=0|zone=2) [ 12.915358] page_type: f5(slab) [ 12.915478] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.915937] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.916356] page dumped because: kasan: bad access detected [ 12.916679] [ 12.916805] Memory state around the buggy address: [ 12.917063] ffff888102b01100: 00 02 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 12.917401] ffff888102b01180: fa fb fc fc fa fb fc fc fa fb fc fc 00 05 fc fc [ 12.917820] >ffff888102b01200: fa fb fc fc fa fb fc fc 00 00 fc fc fa fb fc fc [ 12.918041] ^ [ 12.918519] ffff888102b01280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.918863] ffff888102b01300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.919182] ==================================================================