Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.160144] ================================================================== [ 15.160233] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 15.160388] Read of size 1 at addr fff00000c5c3ca00 by task kunit_try_catch/164 [ 15.160436] [ 15.160471] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.160778] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.160864] Hardware name: linux,dummy-virt (DT) [ 15.160990] Call trace: [ 15.161013] show_stack+0x20/0x38 (C) [ 15.161064] dump_stack_lvl+0x8c/0xd0 [ 15.161121] print_report+0x118/0x5d0 [ 15.161326] kasan_report+0xdc/0x128 [ 15.161372] __kasan_check_byte+0x54/0x70 [ 15.161418] krealloc_noprof+0x44/0x360 [ 15.161464] krealloc_uaf+0x180/0x520 [ 15.161507] kunit_try_run_case+0x170/0x3f0 [ 15.161553] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.161613] kthread+0x328/0x630 [ 15.161655] ret_from_fork+0x10/0x20 [ 15.161711] [ 15.161730] Allocated by task 164: [ 15.161759] kasan_save_stack+0x3c/0x68 [ 15.161799] kasan_save_track+0x20/0x40 [ 15.161835] kasan_save_alloc_info+0x40/0x58 [ 15.161874] __kasan_kmalloc+0xd4/0xd8 [ 15.161909] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.161947] krealloc_uaf+0xc8/0x520 [ 15.161981] kunit_try_run_case+0x170/0x3f0 [ 15.162017] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.162058] kthread+0x328/0x630 [ 15.162089] ret_from_fork+0x10/0x20 [ 15.162124] [ 15.162142] Freed by task 164: [ 15.162167] kasan_save_stack+0x3c/0x68 [ 15.162213] kasan_save_track+0x20/0x40 [ 15.162249] kasan_save_free_info+0x4c/0x78 [ 15.162287] __kasan_slab_free+0x6c/0x98 [ 15.162382] kfree+0x214/0x3c8 [ 15.162423] krealloc_uaf+0x12c/0x520 [ 15.162457] kunit_try_run_case+0x170/0x3f0 [ 15.162493] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.162706] kthread+0x328/0x630 [ 15.162828] ret_from_fork+0x10/0x20 [ 15.162863] [ 15.162883] The buggy address belongs to the object at fff00000c5c3ca00 [ 15.162883] which belongs to the cache kmalloc-256 of size 256 [ 15.163083] The buggy address is located 0 bytes inside of [ 15.163083] freed 256-byte region [fff00000c5c3ca00, fff00000c5c3cb00) [ 15.163327] [ 15.163348] The buggy address belongs to the physical page: [ 15.163415] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105c3c [ 15.163475] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.163661] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.163721] page_type: f5(slab) [ 15.163758] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.163806] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.163862] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.163909] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.164000] head: 0bfffe0000000001 ffffc1ffc3170f01 00000000ffffffff 00000000ffffffff [ 15.164085] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.164135] page dumped because: kasan: bad access detected [ 15.164166] [ 15.164198] Memory state around the buggy address: [ 15.164241] fff00000c5c3c900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.164355] fff00000c5c3c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.164413] >fff00000c5c3ca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.164457] ^ [ 15.164538] fff00000c5c3ca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.164579] fff00000c5c3cb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.164615] ================================================================== [ 15.165149] ================================================================== [ 15.165197] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 15.165284] Read of size 1 at addr fff00000c5c3ca00 by task kunit_try_catch/164 [ 15.165333] [ 15.165360] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.165437] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.165464] Hardware name: linux,dummy-virt (DT) [ 15.165494] Call trace: [ 15.165515] show_stack+0x20/0x38 (C) [ 15.165563] dump_stack_lvl+0x8c/0xd0 [ 15.165616] print_report+0x118/0x5d0 [ 15.165666] kasan_report+0xdc/0x128 [ 15.165729] __asan_report_load1_noabort+0x20/0x30 [ 15.165779] krealloc_uaf+0x4c8/0x520 [ 15.165833] kunit_try_run_case+0x170/0x3f0 [ 15.165879] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.165931] kthread+0x328/0x630 [ 15.165971] ret_from_fork+0x10/0x20 [ 15.166139] [ 15.166158] Allocated by task 164: [ 15.166187] kasan_save_stack+0x3c/0x68 [ 15.166241] kasan_save_track+0x20/0x40 [ 15.166277] kasan_save_alloc_info+0x40/0x58 [ 15.166436] __kasan_kmalloc+0xd4/0xd8 [ 15.166472] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.166509] krealloc_uaf+0xc8/0x520 [ 15.166542] kunit_try_run_case+0x170/0x3f0 [ 15.166584] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.166828] kthread+0x328/0x630 [ 15.166867] ret_from_fork+0x10/0x20 [ 15.166902] [ 15.166952] Freed by task 164: [ 15.167059] kasan_save_stack+0x3c/0x68 [ 15.167101] kasan_save_track+0x20/0x40 [ 15.167296] kasan_save_free_info+0x4c/0x78 [ 15.167421] __kasan_slab_free+0x6c/0x98 [ 15.167529] kfree+0x214/0x3c8 [ 15.167566] krealloc_uaf+0x12c/0x520 [ 15.167644] kunit_try_run_case+0x170/0x3f0 [ 15.167734] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.167776] kthread+0x328/0x630 [ 15.167813] ret_from_fork+0x10/0x20 [ 15.167874] [ 15.167892] The buggy address belongs to the object at fff00000c5c3ca00 [ 15.167892] which belongs to the cache kmalloc-256 of size 256 [ 15.167947] The buggy address is located 0 bytes inside of [ 15.167947] freed 256-byte region [fff00000c5c3ca00, fff00000c5c3cb00) [ 15.168133] [ 15.168154] The buggy address belongs to the physical page: [ 15.168194] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105c3c [ 15.168245] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.168291] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.168340] page_type: f5(slab) [ 15.168377] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.168508] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.168581] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.168628] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.168718] head: 0bfffe0000000001 ffffc1ffc3170f01 00000000ffffffff 00000000ffffffff [ 15.168767] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.168824] page dumped because: kasan: bad access detected [ 15.168854] [ 15.168886] Memory state around the buggy address: [ 15.168920] fff00000c5c3c900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.168962] fff00000c5c3c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.169003] >fff00000c5c3ca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.169039] ^ [ 15.169079] fff00000c5c3ca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.169218] fff00000c5c3cb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.169255] ==================================================================
[ 11.973270] ================================================================== [ 11.973918] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 11.974243] Read of size 1 at addr ffff888100350600 by task kunit_try_catch/181 [ 11.974824] [ 11.975197] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.975245] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.975256] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.975275] Call Trace: [ 11.975289] <TASK> [ 11.975304] dump_stack_lvl+0x73/0xb0 [ 11.975334] print_report+0xd1/0x610 [ 11.975356] ? __virt_addr_valid+0x1db/0x2d0 [ 11.975409] ? krealloc_uaf+0x53c/0x5e0 [ 11.975429] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.975464] ? krealloc_uaf+0x53c/0x5e0 [ 11.975484] kasan_report+0x141/0x180 [ 11.975505] ? krealloc_uaf+0x53c/0x5e0 [ 11.975530] __asan_report_load1_noabort+0x18/0x20 [ 11.975553] krealloc_uaf+0x53c/0x5e0 [ 11.975573] ? __pfx_krealloc_uaf+0x10/0x10 [ 11.975593] ? finish_task_switch.isra.0+0x153/0x700 [ 11.975613] ? __switch_to+0x47/0xf50 [ 11.975638] ? __schedule+0x10cc/0x2b60 [ 11.975659] ? __pfx_read_tsc+0x10/0x10 [ 11.975680] ? ktime_get_ts64+0x86/0x230 [ 11.975704] kunit_try_run_case+0x1a5/0x480 [ 11.975727] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.975748] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.975770] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.975792] ? __kthread_parkme+0x82/0x180 [ 11.975811] ? preempt_count_sub+0x50/0x80 [ 11.975832] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.975855] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.975876] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.975898] kthread+0x337/0x6f0 [ 11.975917] ? trace_preempt_on+0x20/0xc0 [ 11.975938] ? __pfx_kthread+0x10/0x10 [ 11.975957] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.975977] ? calculate_sigpending+0x7b/0xa0 [ 11.976000] ? __pfx_kthread+0x10/0x10 [ 11.976032] ret_from_fork+0x116/0x1d0 [ 11.976050] ? __pfx_kthread+0x10/0x10 [ 11.976069] ret_from_fork_asm+0x1a/0x30 [ 11.976098] </TASK> [ 11.976107] [ 11.986733] Allocated by task 181: [ 11.986916] kasan_save_stack+0x45/0x70 [ 11.987124] kasan_save_track+0x18/0x40 [ 11.987312] kasan_save_alloc_info+0x3b/0x50 [ 11.988218] __kasan_kmalloc+0xb7/0xc0 [ 11.988387] __kmalloc_cache_noprof+0x189/0x420 [ 11.988547] krealloc_uaf+0xbb/0x5e0 [ 11.988681] kunit_try_run_case+0x1a5/0x480 [ 11.988826] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.989014] kthread+0x337/0x6f0 [ 11.989184] ret_from_fork+0x116/0x1d0 [ 11.989370] ret_from_fork_asm+0x1a/0x30 [ 11.989566] [ 11.989664] Freed by task 181: [ 11.989823] kasan_save_stack+0x45/0x70 [ 11.990150] kasan_save_track+0x18/0x40 [ 11.990572] kasan_save_free_info+0x3f/0x60 [ 11.990795] __kasan_slab_free+0x56/0x70 [ 11.990993] kfree+0x222/0x3f0 [ 11.991271] krealloc_uaf+0x13d/0x5e0 [ 11.991613] kunit_try_run_case+0x1a5/0x480 [ 11.992045] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.992325] kthread+0x337/0x6f0 [ 11.992760] ret_from_fork+0x116/0x1d0 [ 11.993025] ret_from_fork_asm+0x1a/0x30 [ 11.993163] [ 11.993234] The buggy address belongs to the object at ffff888100350600 [ 11.993234] which belongs to the cache kmalloc-256 of size 256 [ 11.994228] The buggy address is located 0 bytes inside of [ 11.994228] freed 256-byte region [ffff888100350600, ffff888100350700) [ 11.995546] [ 11.995735] The buggy address belongs to the physical page: [ 11.996069] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100350 [ 11.996571] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 11.997139] flags: 0x200000000000040(head|node=0|zone=2) [ 11.997321] page_type: f5(slab) [ 11.997723] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.998438] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.999122] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.999943] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.001315] head: 0200000000000001 ffffea000400d401 00000000ffffffff 00000000ffffffff [ 12.002317] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.003158] page dumped because: kasan: bad access detected [ 12.004165] [ 12.004705] Memory state around the buggy address: [ 12.005683] ffff888100350500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.006112] ffff888100350580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.006330] >ffff888100350600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.006867] ^ [ 12.007061] ffff888100350680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.007399] ffff888100350700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.007699] ================================================================== [ 11.944083] ================================================================== [ 11.944877] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 11.945227] Read of size 1 at addr ffff888100350600 by task kunit_try_catch/181 [ 11.945712] [ 11.945832] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.945876] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.945886] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.945907] Call Trace: [ 11.945917] <TASK> [ 11.945931] dump_stack_lvl+0x73/0xb0 [ 11.945961] print_report+0xd1/0x610 [ 11.945982] ? __virt_addr_valid+0x1db/0x2d0 [ 11.946017] ? krealloc_uaf+0x1b8/0x5e0 [ 11.946038] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.946059] ? krealloc_uaf+0x1b8/0x5e0 [ 11.946079] kasan_report+0x141/0x180 [ 11.946100] ? krealloc_uaf+0x1b8/0x5e0 [ 11.946123] ? krealloc_uaf+0x1b8/0x5e0 [ 11.946143] __kasan_check_byte+0x3d/0x50 [ 11.946163] krealloc_noprof+0x3f/0x340 [ 11.946185] krealloc_uaf+0x1b8/0x5e0 [ 11.946206] ? __pfx_krealloc_uaf+0x10/0x10 [ 11.946225] ? finish_task_switch.isra.0+0x153/0x700 [ 11.946245] ? __switch_to+0x47/0xf50 [ 11.946270] ? __schedule+0x10cc/0x2b60 [ 11.946292] ? __pfx_read_tsc+0x10/0x10 [ 11.946311] ? ktime_get_ts64+0x86/0x230 [ 11.946334] kunit_try_run_case+0x1a5/0x480 [ 11.946358] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.946379] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.946402] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.946452] ? __kthread_parkme+0x82/0x180 [ 11.946473] ? preempt_count_sub+0x50/0x80 [ 11.946494] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.946529] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.946551] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.946573] kthread+0x337/0x6f0 [ 11.946591] ? trace_preempt_on+0x20/0xc0 [ 11.946613] ? __pfx_kthread+0x10/0x10 [ 11.946633] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.946652] ? calculate_sigpending+0x7b/0xa0 [ 11.946675] ? __pfx_kthread+0x10/0x10 [ 11.946695] ret_from_fork+0x116/0x1d0 [ 11.946712] ? __pfx_kthread+0x10/0x10 [ 11.946732] ret_from_fork_asm+0x1a/0x30 [ 11.946761] </TASK> [ 11.946771] [ 11.955854] Allocated by task 181: [ 11.956054] kasan_save_stack+0x45/0x70 [ 11.956243] kasan_save_track+0x18/0x40 [ 11.956377] kasan_save_alloc_info+0x3b/0x50 [ 11.956586] __kasan_kmalloc+0xb7/0xc0 [ 11.957028] __kmalloc_cache_noprof+0x189/0x420 [ 11.957276] krealloc_uaf+0xbb/0x5e0 [ 11.957617] kunit_try_run_case+0x1a5/0x480 [ 11.957769] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.958100] kthread+0x337/0x6f0 [ 11.958324] ret_from_fork+0x116/0x1d0 [ 11.958488] ret_from_fork_asm+0x1a/0x30 [ 11.958626] [ 11.958696] Freed by task 181: [ 11.958858] kasan_save_stack+0x45/0x70 [ 11.959128] kasan_save_track+0x18/0x40 [ 11.959324] kasan_save_free_info+0x3f/0x60 [ 11.959797] __kasan_slab_free+0x56/0x70 [ 11.959968] kfree+0x222/0x3f0 [ 11.960173] krealloc_uaf+0x13d/0x5e0 [ 11.960528] kunit_try_run_case+0x1a5/0x480 [ 11.960752] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.960928] kthread+0x337/0x6f0 [ 11.961103] ret_from_fork+0x116/0x1d0 [ 11.961296] ret_from_fork_asm+0x1a/0x30 [ 11.961783] [ 11.961892] The buggy address belongs to the object at ffff888100350600 [ 11.961892] which belongs to the cache kmalloc-256 of size 256 [ 11.962744] The buggy address is located 0 bytes inside of [ 11.962744] freed 256-byte region [ffff888100350600, ffff888100350700) [ 11.963120] [ 11.963222] The buggy address belongs to the physical page: [ 11.963973] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100350 [ 11.964807] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 11.965265] flags: 0x200000000000040(head|node=0|zone=2) [ 11.965846] page_type: f5(slab) [ 11.965979] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.966612] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.967037] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 11.967647] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.967947] head: 0200000000000001 ffffea000400d401 00000000ffffffff 00000000ffffffff [ 11.968404] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 11.969024] page dumped because: kasan: bad access detected [ 11.969558] [ 11.969655] Memory state around the buggy address: [ 11.969885] ffff888100350500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.970192] ffff888100350580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.970810] >ffff888100350600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.971060] ^ [ 11.971423] ffff888100350680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.971996] ffff888100350700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.972472] ==================================================================