Date
July 18, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.322888] ================================================================== [ 15.323222] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 15.323278] Read of size 1 at addr fff00000c1735800 by task kunit_try_catch/164 [ 15.323730] [ 15.323782] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.324024] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.324063] Hardware name: linux,dummy-virt (DT) [ 15.324402] Call trace: [ 15.324428] show_stack+0x20/0x38 (C) [ 15.324482] dump_stack_lvl+0x8c/0xd0 [ 15.324572] print_report+0x118/0x5d0 [ 15.324658] kasan_report+0xdc/0x128 [ 15.324750] __kasan_check_byte+0x54/0x70 [ 15.324827] krealloc_noprof+0x44/0x360 [ 15.324899] krealloc_uaf+0x180/0x520 [ 15.325016] kunit_try_run_case+0x170/0x3f0 [ 15.325069] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.325159] kthread+0x328/0x630 [ 15.325234] ret_from_fork+0x10/0x20 [ 15.325297] [ 15.325316] Allocated by task 164: [ 15.325609] kasan_save_stack+0x3c/0x68 [ 15.325797] kasan_save_track+0x20/0x40 [ 15.325842] kasan_save_alloc_info+0x40/0x58 [ 15.326252] __kasan_kmalloc+0xd4/0xd8 [ 15.326381] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.326499] krealloc_uaf+0xc8/0x520 [ 15.326574] kunit_try_run_case+0x170/0x3f0 [ 15.326943] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.327256] kthread+0x328/0x630 [ 15.327323] ret_from_fork+0x10/0x20 [ 15.327481] [ 15.327504] Freed by task 164: [ 15.327550] kasan_save_stack+0x3c/0x68 [ 15.327932] kasan_save_track+0x20/0x40 [ 15.327977] kasan_save_free_info+0x4c/0x78 [ 15.328349] __kasan_slab_free+0x6c/0x98 [ 15.328475] kfree+0x214/0x3c8 [ 15.328512] krealloc_uaf+0x12c/0x520 [ 15.328548] kunit_try_run_case+0x170/0x3f0 [ 15.328745] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.328944] kthread+0x328/0x630 [ 15.329002] ret_from_fork+0x10/0x20 [ 15.329162] [ 15.329345] The buggy address belongs to the object at fff00000c1735800 [ 15.329345] which belongs to the cache kmalloc-256 of size 256 [ 15.329483] The buggy address is located 0 bytes inside of [ 15.329483] freed 256-byte region [fff00000c1735800, fff00000c1735900) [ 15.329582] [ 15.329639] The buggy address belongs to the physical page: [ 15.329670] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101734 [ 15.329998] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.330073] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.330188] page_type: f5(slab) [ 15.330229] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.330277] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.330325] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.330387] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.330436] head: 0bfffe0000000001 ffffc1ffc305cd01 00000000ffffffff 00000000ffffffff [ 15.330482] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.330520] page dumped because: kasan: bad access detected [ 15.330560] [ 15.330578] Memory state around the buggy address: [ 15.330611] fff00000c1735700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.330661] fff00000c1735780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.330703] >fff00000c1735800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.330755] ^ [ 15.330782] fff00000c1735880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.330824] fff00000c1735900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.330861] ================================================================== [ 15.332564] ================================================================== [ 15.332706] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 15.332759] Read of size 1 at addr fff00000c1735800 by task kunit_try_catch/164 [ 15.332807] [ 15.332835] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.333093] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.333243] Hardware name: linux,dummy-virt (DT) [ 15.333369] Call trace: [ 15.333491] show_stack+0x20/0x38 (C) [ 15.333670] dump_stack_lvl+0x8c/0xd0 [ 15.333800] print_report+0x118/0x5d0 [ 15.333852] kasan_report+0xdc/0x128 [ 15.333897] __asan_report_load1_noabort+0x20/0x30 [ 15.334080] krealloc_uaf+0x4c8/0x520 [ 15.334307] kunit_try_run_case+0x170/0x3f0 [ 15.334433] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.334642] kthread+0x328/0x630 [ 15.334769] ret_from_fork+0x10/0x20 [ 15.334853] [ 15.334871] Allocated by task 164: [ 15.335378] kasan_save_stack+0x3c/0x68 [ 15.335500] kasan_save_track+0x20/0x40 [ 15.335578] kasan_save_alloc_info+0x40/0x58 [ 15.335714] __kasan_kmalloc+0xd4/0xd8 [ 15.336083] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.336160] krealloc_uaf+0xc8/0x520 [ 15.336268] kunit_try_run_case+0x170/0x3f0 [ 15.336308] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.336672] kthread+0x328/0x630 [ 15.336754] ret_from_fork+0x10/0x20 [ 15.336874] [ 15.336940] Freed by task 164: [ 15.337054] kasan_save_stack+0x3c/0x68 [ 15.337134] kasan_save_track+0x20/0x40 [ 15.337261] kasan_save_free_info+0x4c/0x78 [ 15.337304] __kasan_slab_free+0x6c/0x98 [ 15.337398] kfree+0x214/0x3c8 [ 15.337910] krealloc_uaf+0x12c/0x520 [ 15.338007] kunit_try_run_case+0x170/0x3f0 [ 15.338111] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.338197] kthread+0x328/0x630 [ 15.338277] ret_from_fork+0x10/0x20 [ 15.338646] [ 15.338692] The buggy address belongs to the object at fff00000c1735800 [ 15.338692] which belongs to the cache kmalloc-256 of size 256 [ 15.338824] The buggy address is located 0 bytes inside of [ 15.338824] freed 256-byte region [fff00000c1735800, fff00000c1735900) [ 15.338919] [ 15.339064] The buggy address belongs to the physical page: [ 15.339142] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101734 [ 15.339258] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.339325] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.339556] page_type: f5(slab) [ 15.339604] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.339668] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.339727] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.339778] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.339826] head: 0bfffe0000000001 ffffc1ffc305cd01 00000000ffffffff 00000000ffffffff [ 15.339873] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.339911] page dumped because: kasan: bad access detected [ 15.339949] [ 15.339967] Memory state around the buggy address: [ 15.339997] fff00000c1735700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.340039] fff00000c1735780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.340079] >fff00000c1735800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.340129] ^ [ 15.340157] fff00000c1735880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.340206] fff00000c1735900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.340257] ==================================================================
[ 12.111428] ================================================================== [ 12.111963] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 12.112255] Read of size 1 at addr ffff888100344000 by task kunit_try_catch/183 [ 12.112652] [ 12.112860] CPU: 0 UID: 0 PID: 183 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.112907] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.112919] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.112947] Call Trace: [ 12.112960] <TASK> [ 12.112976] dump_stack_lvl+0x73/0xb0 [ 12.113006] print_report+0xd1/0x610 [ 12.113027] ? __virt_addr_valid+0x1db/0x2d0 [ 12.113063] ? krealloc_uaf+0x1b8/0x5e0 [ 12.113084] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.113106] ? krealloc_uaf+0x1b8/0x5e0 [ 12.113126] kasan_report+0x141/0x180 [ 12.113147] ? krealloc_uaf+0x1b8/0x5e0 [ 12.113171] ? krealloc_uaf+0x1b8/0x5e0 [ 12.113191] __kasan_check_byte+0x3d/0x50 [ 12.113212] krealloc_noprof+0x3f/0x340 [ 12.113235] krealloc_uaf+0x1b8/0x5e0 [ 12.113256] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.113287] ? finish_task_switch.isra.0+0x153/0x700 [ 12.113310] ? __switch_to+0x47/0xf50 [ 12.113335] ? __schedule+0x10cc/0x2b60 [ 12.113357] ? __pfx_read_tsc+0x10/0x10 [ 12.113377] ? ktime_get_ts64+0x86/0x230 [ 12.113402] kunit_try_run_case+0x1a5/0x480 [ 12.113426] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.113448] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.113471] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.113493] ? __kthread_parkme+0x82/0x180 [ 12.113513] ? preempt_count_sub+0x50/0x80 [ 12.113535] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.113558] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.113581] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.113604] kthread+0x337/0x6f0 [ 12.113672] ? trace_preempt_on+0x20/0xc0 [ 12.113696] ? __pfx_kthread+0x10/0x10 [ 12.113715] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.113736] ? calculate_sigpending+0x7b/0xa0 [ 12.113760] ? __pfx_kthread+0x10/0x10 [ 12.113780] ret_from_fork+0x116/0x1d0 [ 12.113798] ? __pfx_kthread+0x10/0x10 [ 12.113817] ret_from_fork_asm+0x1a/0x30 [ 12.113847] </TASK> [ 12.113857] [ 12.121831] Allocated by task 183: [ 12.122020] kasan_save_stack+0x45/0x70 [ 12.122224] kasan_save_track+0x18/0x40 [ 12.122428] kasan_save_alloc_info+0x3b/0x50 [ 12.122867] __kasan_kmalloc+0xb7/0xc0 [ 12.123166] __kmalloc_cache_noprof+0x189/0x420 [ 12.123411] krealloc_uaf+0xbb/0x5e0 [ 12.123604] kunit_try_run_case+0x1a5/0x480 [ 12.123837] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.124247] kthread+0x337/0x6f0 [ 12.124427] ret_from_fork+0x116/0x1d0 [ 12.124603] ret_from_fork_asm+0x1a/0x30 [ 12.124767] [ 12.124856] Freed by task 183: [ 12.125083] kasan_save_stack+0x45/0x70 [ 12.125304] kasan_save_track+0x18/0x40 [ 12.125472] kasan_save_free_info+0x3f/0x60 [ 12.125683] __kasan_slab_free+0x56/0x70 [ 12.125850] kfree+0x222/0x3f0 [ 12.125981] krealloc_uaf+0x13d/0x5e0 [ 12.126114] kunit_try_run_case+0x1a5/0x480 [ 12.126384] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.126631] kthread+0x337/0x6f0 [ 12.126815] ret_from_fork+0x116/0x1d0 [ 12.126978] ret_from_fork_asm+0x1a/0x30 [ 12.127356] [ 12.127440] The buggy address belongs to the object at ffff888100344000 [ 12.127440] which belongs to the cache kmalloc-256 of size 256 [ 12.127840] The buggy address is located 0 bytes inside of [ 12.127840] freed 256-byte region [ffff888100344000, ffff888100344100) [ 12.128192] [ 12.128299] The buggy address belongs to the physical page: [ 12.128550] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100344 [ 12.129036] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.129384] flags: 0x200000000000040(head|node=0|zone=2) [ 12.129889] page_type: f5(slab) [ 12.130095] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.130400] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.130906] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.131369] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.131779] head: 0200000000000001 ffffea000400d101 00000000ffffffff 00000000ffffffff [ 12.132286] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.132671] page dumped because: kasan: bad access detected [ 12.132903] [ 12.132977] Memory state around the buggy address: [ 12.133144] ffff888100343f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.133700] ffff888100343f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.134003] >ffff888100344000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.134291] ^ [ 12.134415] ffff888100344080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.134798] ffff888100344100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.135012] ================================================================== [ 12.135745] ================================================================== [ 12.136203] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 12.136534] Read of size 1 at addr ffff888100344000 by task kunit_try_catch/183 [ 12.136821] [ 12.136919] CPU: 0 UID: 0 PID: 183 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.136967] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.136978] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.136998] Call Trace: [ 12.137009] <TASK> [ 12.137064] dump_stack_lvl+0x73/0xb0 [ 12.137093] print_report+0xd1/0x610 [ 12.137115] ? __virt_addr_valid+0x1db/0x2d0 [ 12.137137] ? krealloc_uaf+0x53c/0x5e0 [ 12.137157] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.137179] ? krealloc_uaf+0x53c/0x5e0 [ 12.137200] kasan_report+0x141/0x180 [ 12.137221] ? krealloc_uaf+0x53c/0x5e0 [ 12.137246] __asan_report_load1_noabort+0x18/0x20 [ 12.137270] krealloc_uaf+0x53c/0x5e0 [ 12.137303] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.137323] ? finish_task_switch.isra.0+0x153/0x700 [ 12.137345] ? __switch_to+0x47/0xf50 [ 12.137369] ? __schedule+0x10cc/0x2b60 [ 12.137390] ? __pfx_read_tsc+0x10/0x10 [ 12.137410] ? ktime_get_ts64+0x86/0x230 [ 12.137433] kunit_try_run_case+0x1a5/0x480 [ 12.137466] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.137487] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.137510] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.137533] ? __kthread_parkme+0x82/0x180 [ 12.137553] ? preempt_count_sub+0x50/0x80 [ 12.137575] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.137598] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.137620] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.137644] kthread+0x337/0x6f0 [ 12.137662] ? trace_preempt_on+0x20/0xc0 [ 12.137685] ? __pfx_kthread+0x10/0x10 [ 12.137704] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.137724] ? calculate_sigpending+0x7b/0xa0 [ 12.137748] ? __pfx_kthread+0x10/0x10 [ 12.137768] ret_from_fork+0x116/0x1d0 [ 12.137786] ? __pfx_kthread+0x10/0x10 [ 12.137805] ret_from_fork_asm+0x1a/0x30 [ 12.137834] </TASK> [ 12.137844] [ 12.145298] Allocated by task 183: [ 12.145428] kasan_save_stack+0x45/0x70 [ 12.145570] kasan_save_track+0x18/0x40 [ 12.145704] kasan_save_alloc_info+0x3b/0x50 [ 12.145853] __kasan_kmalloc+0xb7/0xc0 [ 12.145986] __kmalloc_cache_noprof+0x189/0x420 [ 12.146141] krealloc_uaf+0xbb/0x5e0 [ 12.146270] kunit_try_run_case+0x1a5/0x480 [ 12.146733] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.147354] kthread+0x337/0x6f0 [ 12.147586] ret_from_fork+0x116/0x1d0 [ 12.147777] ret_from_fork_asm+0x1a/0x30 [ 12.147973] [ 12.148131] Freed by task 183: [ 12.148302] kasan_save_stack+0x45/0x70 [ 12.148557] kasan_save_track+0x18/0x40 [ 12.148749] kasan_save_free_info+0x3f/0x60 [ 12.148960] __kasan_slab_free+0x56/0x70 [ 12.149392] kfree+0x222/0x3f0 [ 12.149589] krealloc_uaf+0x13d/0x5e0 [ 12.149778] kunit_try_run_case+0x1a5/0x480 [ 12.149949] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.150359] kthread+0x337/0x6f0 [ 12.150561] ret_from_fork+0x116/0x1d0 [ 12.150705] ret_from_fork_asm+0x1a/0x30 [ 12.150844] [ 12.150918] The buggy address belongs to the object at ffff888100344000 [ 12.150918] which belongs to the cache kmalloc-256 of size 256 [ 12.151294] The buggy address is located 0 bytes inside of [ 12.151294] freed 256-byte region [ffff888100344000, ffff888100344100) [ 12.151819] [ 12.151914] The buggy address belongs to the physical page: [ 12.152190] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100344 [ 12.152906] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.153203] flags: 0x200000000000040(head|node=0|zone=2) [ 12.153475] page_type: f5(slab) [ 12.153612] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.153842] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.154128] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.154727] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.155207] head: 0200000000000001 ffffea000400d101 00000000ffffffff 00000000ffffffff [ 12.155601] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.155892] page dumped because: kasan: bad access detected [ 12.156205] [ 12.156301] Memory state around the buggy address: [ 12.156544] ffff888100343f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.156826] ffff888100343f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.158560] >ffff888100344000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.158811] ^ [ 12.158930] ffff888100344080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.159391] ffff888100344100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.159960] ==================================================================