Date
July 8, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.312413] ================================================================== [ 19.312983] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 19.313046] Read of size 1 at addr fff00000c454d000 by task kunit_try_catch/164 [ 19.313168] [ 19.313216] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.313298] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.313323] Hardware name: linux,dummy-virt (DT) [ 19.313526] Call trace: [ 19.313563] show_stack+0x20/0x38 (C) [ 19.313717] dump_stack_lvl+0x8c/0xd0 [ 19.313988] print_report+0x118/0x608 [ 19.314204] kasan_report+0xdc/0x128 [ 19.314265] __asan_report_load1_noabort+0x20/0x30 [ 19.314912] krealloc_uaf+0x4c8/0x520 [ 19.314983] kunit_try_run_case+0x170/0x3f0 [ 19.315108] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.315178] kthread+0x328/0x630 [ 19.315226] ret_from_fork+0x10/0x20 [ 19.315416] [ 19.315510] Allocated by task 164: [ 19.315635] kasan_save_stack+0x3c/0x68 [ 19.315763] kasan_save_track+0x20/0x40 [ 19.315924] kasan_save_alloc_info+0x40/0x58 [ 19.316073] __kasan_kmalloc+0xd4/0xd8 [ 19.316225] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.316268] krealloc_uaf+0xc8/0x520 [ 19.316707] kunit_try_run_case+0x170/0x3f0 [ 19.316871] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.316986] kthread+0x328/0x630 [ 19.317133] ret_from_fork+0x10/0x20 [ 19.317659] [ 19.317726] Freed by task 164: [ 19.317813] kasan_save_stack+0x3c/0x68 [ 19.317936] kasan_save_track+0x20/0x40 [ 19.318077] kasan_save_free_info+0x4c/0x78 [ 19.318218] __kasan_slab_free+0x6c/0x98 [ 19.318258] kfree+0x214/0x3c8 [ 19.318617] krealloc_uaf+0x12c/0x520 [ 19.318813] kunit_try_run_case+0x170/0x3f0 [ 19.318926] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.319058] kthread+0x328/0x630 [ 19.319176] ret_from_fork+0x10/0x20 [ 19.319483] [ 19.319541] The buggy address belongs to the object at fff00000c454d000 [ 19.319541] which belongs to the cache kmalloc-256 of size 256 [ 19.319694] The buggy address is located 0 bytes inside of [ 19.319694] freed 256-byte region [fff00000c454d000, fff00000c454d100) [ 19.319878] [ 19.320070] The buggy address belongs to the physical page: [ 19.320257] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10454c [ 19.320367] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.320512] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 19.320708] page_type: f5(slab) [ 19.320929] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 19.321121] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.321376] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 19.321603] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.321711] head: 0bfffe0000000001 ffffc1ffc3115301 00000000ffffffff 00000000ffffffff [ 19.321773] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 19.321821] page dumped because: kasan: bad access detected [ 19.321857] [ 19.321875] Memory state around the buggy address: [ 19.321906] fff00000c454cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.321984] fff00000c454cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.322036] >fff00000c454d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.322072] ^ [ 19.322105] fff00000c454d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.322167] fff00000c454d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.322203] ================================================================== [ 19.298832] ================================================================== [ 19.299398] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 19.299798] Read of size 1 at addr fff00000c454d000 by task kunit_try_catch/164 [ 19.299975] [ 19.300199] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.300437] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.300647] Hardware name: linux,dummy-virt (DT) [ 19.300754] Call trace: [ 19.300856] show_stack+0x20/0x38 (C) [ 19.301066] dump_stack_lvl+0x8c/0xd0 [ 19.301218] print_report+0x118/0x608 [ 19.301428] kasan_report+0xdc/0x128 [ 19.301593] __kasan_check_byte+0x54/0x70 [ 19.301760] krealloc_noprof+0x44/0x360 [ 19.302218] krealloc_uaf+0x180/0x520 [ 19.302330] kunit_try_run_case+0x170/0x3f0 [ 19.302438] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.302650] kthread+0x328/0x630 [ 19.302712] ret_from_fork+0x10/0x20 [ 19.302979] [ 19.303250] Allocated by task 164: [ 19.303362] kasan_save_stack+0x3c/0x68 [ 19.303448] kasan_save_track+0x20/0x40 [ 19.303596] kasan_save_alloc_info+0x40/0x58 [ 19.303636] __kasan_kmalloc+0xd4/0xd8 [ 19.303688] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.303728] krealloc_uaf+0xc8/0x520 [ 19.304072] kunit_try_run_case+0x170/0x3f0 [ 19.304837] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.304929] kthread+0x328/0x630 [ 19.305088] ret_from_fork+0x10/0x20 [ 19.305147] [ 19.305197] Freed by task 164: [ 19.305764] kasan_save_stack+0x3c/0x68 [ 19.305968] kasan_save_track+0x20/0x40 [ 19.306264] kasan_save_free_info+0x4c/0x78 [ 19.306498] __kasan_slab_free+0x6c/0x98 [ 19.306787] kfree+0x214/0x3c8 [ 19.307012] krealloc_uaf+0x12c/0x520 [ 19.307072] kunit_try_run_case+0x170/0x3f0 [ 19.307267] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.307473] kthread+0x328/0x630 [ 19.307565] ret_from_fork+0x10/0x20 [ 19.307867] [ 19.307997] The buggy address belongs to the object at fff00000c454d000 [ 19.307997] which belongs to the cache kmalloc-256 of size 256 [ 19.308280] The buggy address is located 0 bytes inside of [ 19.308280] freed 256-byte region [fff00000c454d000, fff00000c454d100) [ 19.308465] [ 19.308597] The buggy address belongs to the physical page: [ 19.308718] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10454c [ 19.309039] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.309171] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 19.309229] page_type: f5(slab) [ 19.309278] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 19.309335] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.309384] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 19.309432] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.309495] head: 0bfffe0000000001 ffffc1ffc3115301 00000000ffffffff 00000000ffffffff [ 19.309542] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 19.309592] page dumped because: kasan: bad access detected [ 19.309621] [ 19.309639] Memory state around the buggy address: [ 19.309669] fff00000c454cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.309720] fff00000c454cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.309762] >fff00000c454d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.309814] ^ [ 19.309841] fff00000c454d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.309881] fff00000c454d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.309933] ==================================================================
[ 12.426208] ================================================================== [ 12.426847] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 12.427554] Read of size 1 at addr ffff888100aab200 by task kunit_try_catch/182 [ 12.428324] [ 12.428455] CPU: 1 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.428506] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.428571] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.428594] Call Trace: [ 12.428615] <TASK> [ 12.428632] dump_stack_lvl+0x73/0xb0 [ 12.428665] print_report+0xd1/0x650 [ 12.428687] ? __virt_addr_valid+0x1db/0x2d0 [ 12.428711] ? krealloc_uaf+0x1b8/0x5e0 [ 12.428732] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.428754] ? krealloc_uaf+0x1b8/0x5e0 [ 12.428775] kasan_report+0x141/0x180 [ 12.428796] ? krealloc_uaf+0x1b8/0x5e0 [ 12.428820] ? krealloc_uaf+0x1b8/0x5e0 [ 12.428840] __kasan_check_byte+0x3d/0x50 [ 12.428863] krealloc_noprof+0x3f/0x340 [ 12.428882] ? stack_depot_save_flags+0x48b/0x840 [ 12.428913] krealloc_uaf+0x1b8/0x5e0 [ 12.428972] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.429006] ? finish_task_switch.isra.0+0x153/0x700 [ 12.429030] ? __switch_to+0x47/0xf50 [ 12.429056] ? __schedule+0x10cc/0x2b60 [ 12.429078] ? __pfx_read_tsc+0x10/0x10 [ 12.429099] ? ktime_get_ts64+0x86/0x230 [ 12.429124] kunit_try_run_case+0x1a5/0x480 [ 12.429149] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.429171] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.429195] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.429218] ? __kthread_parkme+0x82/0x180 [ 12.429239] ? preempt_count_sub+0x50/0x80 [ 12.429261] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.429285] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.429308] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.429332] kthread+0x337/0x6f0 [ 12.429350] ? trace_preempt_on+0x20/0xc0 [ 12.429374] ? __pfx_kthread+0x10/0x10 [ 12.429394] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.429415] ? calculate_sigpending+0x7b/0xa0 [ 12.429439] ? __pfx_kthread+0x10/0x10 [ 12.429460] ret_from_fork+0x116/0x1d0 [ 12.429477] ? __pfx_kthread+0x10/0x10 [ 12.429497] ret_from_fork_asm+0x1a/0x30 [ 12.429528] </TASK> [ 12.429538] [ 12.438031] Allocated by task 182: [ 12.438336] kasan_save_stack+0x45/0x70 [ 12.438487] kasan_save_track+0x18/0x40 [ 12.438801] kasan_save_alloc_info+0x3b/0x50 [ 12.439035] __kasan_kmalloc+0xb7/0xc0 [ 12.439300] __kmalloc_cache_noprof+0x189/0x420 [ 12.439582] krealloc_uaf+0xbb/0x5e0 [ 12.439770] kunit_try_run_case+0x1a5/0x480 [ 12.439918] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.440279] kthread+0x337/0x6f0 [ 12.440639] ret_from_fork+0x116/0x1d0 [ 12.440883] ret_from_fork_asm+0x1a/0x30 [ 12.441047] [ 12.441165] Freed by task 182: [ 12.441412] kasan_save_stack+0x45/0x70 [ 12.441691] kasan_save_track+0x18/0x40 [ 12.441884] kasan_save_free_info+0x3f/0x60 [ 12.442190] __kasan_slab_free+0x56/0x70 [ 12.442336] kfree+0x222/0x3f0 [ 12.442452] krealloc_uaf+0x13d/0x5e0 [ 12.442580] kunit_try_run_case+0x1a5/0x480 [ 12.442736] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.442909] kthread+0x337/0x6f0 [ 12.443109] ret_from_fork+0x116/0x1d0 [ 12.443293] ret_from_fork_asm+0x1a/0x30 [ 12.443504] [ 12.443616] The buggy address belongs to the object at ffff888100aab200 [ 12.443616] which belongs to the cache kmalloc-256 of size 256 [ 12.444644] The buggy address is located 0 bytes inside of [ 12.444644] freed 256-byte region [ffff888100aab200, ffff888100aab300) [ 12.444985] [ 12.445057] The buggy address belongs to the physical page: [ 12.445315] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100aaa [ 12.445988] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.446354] flags: 0x200000000000040(head|node=0|zone=2) [ 12.446741] page_type: f5(slab) [ 12.446864] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.447300] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.447789] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.448320] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.448713] head: 0200000000000001 ffffea000402aa81 00000000ffffffff 00000000ffffffff [ 12.449121] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.449453] page dumped because: kasan: bad access detected [ 12.449771] [ 12.449859] Memory state around the buggy address: [ 12.450213] ffff888100aab100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.450633] ffff888100aab180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.451003] >ffff888100aab200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.451316] ^ [ 12.451479] ffff888100aab280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.451838] ffff888100aab300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.452158] ================================================================== [ 12.452574] ================================================================== [ 12.452968] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 12.453648] Read of size 1 at addr ffff888100aab200 by task kunit_try_catch/182 [ 12.453876] [ 12.453959] CPU: 1 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.453998] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.454009] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.454027] Call Trace: [ 12.454039] <TASK> [ 12.454053] dump_stack_lvl+0x73/0xb0 [ 12.454081] print_report+0xd1/0x650 [ 12.454103] ? __virt_addr_valid+0x1db/0x2d0 [ 12.454125] ? krealloc_uaf+0x53c/0x5e0 [ 12.454145] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.454168] ? krealloc_uaf+0x53c/0x5e0 [ 12.454189] kasan_report+0x141/0x180 [ 12.454211] ? krealloc_uaf+0x53c/0x5e0 [ 12.454295] __asan_report_load1_noabort+0x18/0x20 [ 12.454336] krealloc_uaf+0x53c/0x5e0 [ 12.454358] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.454378] ? finish_task_switch.isra.0+0x153/0x700 [ 12.454400] ? __switch_to+0x47/0xf50 [ 12.454424] ? __schedule+0x10cc/0x2b60 [ 12.454445] ? __pfx_read_tsc+0x10/0x10 [ 12.454474] ? ktime_get_ts64+0x86/0x230 [ 12.454499] kunit_try_run_case+0x1a5/0x480 [ 12.454544] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.454567] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.454591] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.454625] ? __kthread_parkme+0x82/0x180 [ 12.454645] ? preempt_count_sub+0x50/0x80 [ 12.454668] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.454692] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.454716] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.454741] kthread+0x337/0x6f0 [ 12.454760] ? trace_preempt_on+0x20/0xc0 [ 12.454784] ? __pfx_kthread+0x10/0x10 [ 12.454806] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.454828] ? calculate_sigpending+0x7b/0xa0 [ 12.454851] ? __pfx_kthread+0x10/0x10 [ 12.454872] ret_from_fork+0x116/0x1d0 [ 12.454890] ? __pfx_kthread+0x10/0x10 [ 12.454909] ret_from_fork_asm+0x1a/0x30 [ 12.454981] </TASK> [ 12.454991] [ 12.467083] Allocated by task 182: [ 12.467400] kasan_save_stack+0x45/0x70 [ 12.467789] kasan_save_track+0x18/0x40 [ 12.468230] kasan_save_alloc_info+0x3b/0x50 [ 12.468608] __kasan_kmalloc+0xb7/0xc0 [ 12.468997] __kmalloc_cache_noprof+0x189/0x420 [ 12.469417] krealloc_uaf+0xbb/0x5e0 [ 12.469571] kunit_try_run_case+0x1a5/0x480 [ 12.469733] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.469909] kthread+0x337/0x6f0 [ 12.470289] ret_from_fork+0x116/0x1d0 [ 12.470674] ret_from_fork_asm+0x1a/0x30 [ 12.471130] [ 12.471303] Freed by task 182: [ 12.471626] kasan_save_stack+0x45/0x70 [ 12.472050] kasan_save_track+0x18/0x40 [ 12.472420] kasan_save_free_info+0x3f/0x60 [ 12.472835] __kasan_slab_free+0x56/0x70 [ 12.473318] kfree+0x222/0x3f0 [ 12.473661] krealloc_uaf+0x13d/0x5e0 [ 12.474153] kunit_try_run_case+0x1a5/0x480 [ 12.474532] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.474726] kthread+0x337/0x6f0 [ 12.475125] ret_from_fork+0x116/0x1d0 [ 12.475498] ret_from_fork_asm+0x1a/0x30 [ 12.475920] [ 12.476002] The buggy address belongs to the object at ffff888100aab200 [ 12.476002] which belongs to the cache kmalloc-256 of size 256 [ 12.476372] The buggy address is located 0 bytes inside of [ 12.476372] freed 256-byte region [ffff888100aab200, ffff888100aab300) [ 12.476836] [ 12.476907] The buggy address belongs to the physical page: [ 12.477141] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100aaa [ 12.477465] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.478010] flags: 0x200000000000040(head|node=0|zone=2) [ 12.478268] page_type: f5(slab) [ 12.478460] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.478737] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.479116] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.479444] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.479787] head: 0200000000000001 ffffea000402aa81 00000000ffffffff 00000000ffffffff [ 12.480090] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.480721] page dumped because: kasan: bad access detected [ 12.480954] [ 12.481054] Memory state around the buggy address: [ 12.481271] ffff888100aab100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.481635] ffff888100aab180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.482064] >ffff888100aab200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.482372] ^ [ 12.482500] ffff888100aab280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.482830] ffff888100aab300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.483169] ==================================================================