Date
July 10, 2025, 11:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.881406] ================================================================== [ 15.881503] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 15.881566] Read of size 1 at addr fff00000c17b6e00 by task kunit_try_catch/164 [ 15.881956] [ 15.882022] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 15.884409] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.884529] Hardware name: linux,dummy-virt (DT) [ 15.884666] Call trace: [ 15.884694] show_stack+0x20/0x38 (C) [ 15.884875] dump_stack_lvl+0x8c/0xd0 [ 15.885091] print_report+0x118/0x608 [ 15.885193] kasan_report+0xdc/0x128 [ 15.885261] __kasan_check_byte+0x54/0x70 [ 15.885374] krealloc_noprof+0x44/0x360 [ 15.885453] krealloc_uaf+0x180/0x520 [ 15.885525] kunit_try_run_case+0x170/0x3f0 [ 15.885603] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.885680] kthread+0x328/0x630 [ 15.885751] ret_from_fork+0x10/0x20 [ 15.885839] [ 15.885869] Allocated by task 164: [ 15.885930] kasan_save_stack+0x3c/0x68 [ 15.886103] kasan_save_track+0x20/0x40 [ 15.886323] kasan_save_alloc_info+0x40/0x58 [ 15.886396] __kasan_kmalloc+0xd4/0xd8 [ 15.886504] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.886590] krealloc_uaf+0xc8/0x520 [ 15.886676] kunit_try_run_case+0x170/0x3f0 [ 15.886741] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.886784] kthread+0x328/0x630 [ 15.886816] ret_from_fork+0x10/0x20 [ 15.886972] [ 15.887011] Freed by task 164: [ 15.887222] kasan_save_stack+0x3c/0x68 [ 15.887319] kasan_save_track+0x20/0x40 [ 15.887398] kasan_save_free_info+0x4c/0x78 [ 15.887462] __kasan_slab_free+0x6c/0x98 [ 15.887552] kfree+0x214/0x3c8 [ 15.887609] krealloc_uaf+0x12c/0x520 [ 15.887666] kunit_try_run_case+0x170/0x3f0 [ 15.887703] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.887746] kthread+0x328/0x630 [ 15.887789] ret_from_fork+0x10/0x20 [ 15.887862] [ 15.887901] The buggy address belongs to the object at fff00000c17b6e00 [ 15.887901] which belongs to the cache kmalloc-256 of size 256 [ 15.888006] The buggy address is located 0 bytes inside of [ 15.888006] freed 256-byte region [fff00000c17b6e00, fff00000c17b6f00) [ 15.888089] [ 15.888112] The buggy address belongs to the physical page: [ 15.888159] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1017b6 [ 15.888211] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.888262] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.888352] page_type: f5(slab) [ 15.888393] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.888441] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.888489] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.888535] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.888581] head: 0bfffe0000000001 ffffc1ffc305ed81 00000000ffffffff 00000000ffffffff [ 15.888628] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.888666] page dumped because: kasan: bad access detected [ 15.888712] [ 15.888729] Memory state around the buggy address: [ 15.888761] fff00000c17b6d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.888810] fff00000c17b6d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.888859] >fff00000c17b6e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.888903] ^ [ 15.888936] fff00000c17b6e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.889012] fff00000c17b6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.889073] ================================================================== [ 15.890614] ================================================================== [ 15.890682] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 15.890733] Read of size 1 at addr fff00000c17b6e00 by task kunit_try_catch/164 [ 15.890813] [ 15.890863] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 15.890942] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.890967] Hardware name: linux,dummy-virt (DT) [ 15.891005] Call trace: [ 15.891045] show_stack+0x20/0x38 (C) [ 15.891107] dump_stack_lvl+0x8c/0xd0 [ 15.891165] print_report+0x118/0x608 [ 15.891212] kasan_report+0xdc/0x128 [ 15.891260] __asan_report_load1_noabort+0x20/0x30 [ 15.891409] krealloc_uaf+0x4c8/0x520 [ 15.891461] kunit_try_run_case+0x170/0x3f0 [ 15.891508] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.891732] kthread+0x328/0x630 [ 15.891804] ret_from_fork+0x10/0x20 [ 15.891860] [ 15.891886] Allocated by task 164: [ 15.891922] kasan_save_stack+0x3c/0x68 [ 15.891972] kasan_save_track+0x20/0x40 [ 15.892019] kasan_save_alloc_info+0x40/0x58 [ 15.892076] __kasan_kmalloc+0xd4/0xd8 [ 15.892165] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.892212] krealloc_uaf+0xc8/0x520 [ 15.892247] kunit_try_run_case+0x170/0x3f0 [ 15.892284] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.892326] kthread+0x328/0x630 [ 15.892357] ret_from_fork+0x10/0x20 [ 15.892518] [ 15.892543] Freed by task 164: [ 15.892569] kasan_save_stack+0x3c/0x68 [ 15.892833] kasan_save_track+0x20/0x40 [ 15.892890] kasan_save_free_info+0x4c/0x78 [ 15.892936] __kasan_slab_free+0x6c/0x98 [ 15.892975] kfree+0x214/0x3c8 [ 15.893007] krealloc_uaf+0x12c/0x520 [ 15.893165] kunit_try_run_case+0x170/0x3f0 [ 15.893205] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.893255] kthread+0x328/0x630 [ 15.893356] ret_from_fork+0x10/0x20 [ 15.893466] [ 15.893554] The buggy address belongs to the object at fff00000c17b6e00 [ 15.893554] which belongs to the cache kmalloc-256 of size 256 [ 15.893629] The buggy address is located 0 bytes inside of [ 15.893629] freed 256-byte region [fff00000c17b6e00, fff00000c17b6f00) [ 15.893688] [ 15.893708] The buggy address belongs to the physical page: [ 15.893761] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1017b6 [ 15.893864] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.893957] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.894076] page_type: f5(slab) [ 15.894151] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.894235] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.894327] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.894374] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.894421] head: 0bfffe0000000001 ffffc1ffc305ed81 00000000ffffffff 00000000ffffffff [ 15.894476] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.894514] page dumped because: kasan: bad access detected [ 15.894544] [ 15.894561] Memory state around the buggy address: [ 15.894629] fff00000c17b6d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.894672] fff00000c17b6d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.894884] >fff00000c17b6e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.894970] ^ [ 15.895097] fff00000c17b6e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.895175] fff00000c17b6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.895229] ==================================================================
[ 12.652081] ================================================================== [ 12.652514] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 12.652746] Read of size 1 at addr ffff88810099de00 by task kunit_try_catch/181 [ 12.652966] [ 12.653052] CPU: 1 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.653092] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.653104] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.653123] Call Trace: [ 12.653135] <TASK> [ 12.653151] dump_stack_lvl+0x73/0xb0 [ 12.653179] print_report+0xd1/0x650 [ 12.653200] ? __virt_addr_valid+0x1db/0x2d0 [ 12.653223] ? krealloc_uaf+0x1b8/0x5e0 [ 12.653242] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.653263] ? krealloc_uaf+0x1b8/0x5e0 [ 12.653283] kasan_report+0x141/0x180 [ 12.653303] ? krealloc_uaf+0x1b8/0x5e0 [ 12.653326] ? krealloc_uaf+0x1b8/0x5e0 [ 12.653346] __kasan_check_byte+0x3d/0x50 [ 12.653725] krealloc_noprof+0x3f/0x340 [ 12.653759] krealloc_uaf+0x1b8/0x5e0 [ 12.653782] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.653804] ? finish_task_switch.isra.0+0x153/0x700 [ 12.653827] ? __switch_to+0x47/0xf50 [ 12.653852] ? __schedule+0x10cc/0x2b60 [ 12.654051] ? __pfx_read_tsc+0x10/0x10 [ 12.654073] ? ktime_get_ts64+0x86/0x230 [ 12.654099] kunit_try_run_case+0x1a5/0x480 [ 12.654125] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.654147] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.654170] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.654194] ? __kthread_parkme+0x82/0x180 [ 12.654215] ? preempt_count_sub+0x50/0x80 [ 12.654237] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.654260] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.654284] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.654308] kthread+0x337/0x6f0 [ 12.654326] ? trace_preempt_on+0x20/0xc0 [ 12.654391] ? __pfx_kthread+0x10/0x10 [ 12.654439] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.654460] ? calculate_sigpending+0x7b/0xa0 [ 12.654485] ? __pfx_kthread+0x10/0x10 [ 12.654506] ret_from_fork+0x116/0x1d0 [ 12.654525] ? __pfx_kthread+0x10/0x10 [ 12.654545] ret_from_fork_asm+0x1a/0x30 [ 12.654575] </TASK> [ 12.654585] [ 12.668778] Allocated by task 181: [ 12.669219] kasan_save_stack+0x45/0x70 [ 12.669764] kasan_save_track+0x18/0x40 [ 12.669978] kasan_save_alloc_info+0x3b/0x50 [ 12.670194] __kasan_kmalloc+0xb7/0xc0 [ 12.670398] __kmalloc_cache_noprof+0x189/0x420 [ 12.670654] krealloc_uaf+0xbb/0x5e0 [ 12.670789] kunit_try_run_case+0x1a5/0x480 [ 12.670994] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.671555] kthread+0x337/0x6f0 [ 12.671788] ret_from_fork+0x116/0x1d0 [ 12.671973] ret_from_fork_asm+0x1a/0x30 [ 12.672192] [ 12.672289] Freed by task 181: [ 12.672521] kasan_save_stack+0x45/0x70 [ 12.672691] kasan_save_track+0x18/0x40 [ 12.672930] kasan_save_free_info+0x3f/0x60 [ 12.673188] __kasan_slab_free+0x56/0x70 [ 12.673460] kfree+0x222/0x3f0 [ 12.673687] krealloc_uaf+0x13d/0x5e0 [ 12.673853] kunit_try_run_case+0x1a5/0x480 [ 12.674082] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.674340] kthread+0x337/0x6f0 [ 12.674662] ret_from_fork+0x116/0x1d0 [ 12.674867] ret_from_fork_asm+0x1a/0x30 [ 12.675056] [ 12.675170] The buggy address belongs to the object at ffff88810099de00 [ 12.675170] which belongs to the cache kmalloc-256 of size 256 [ 12.675916] The buggy address is located 0 bytes inside of [ 12.675916] freed 256-byte region [ffff88810099de00, ffff88810099df00) [ 12.676412] [ 12.676681] The buggy address belongs to the physical page: [ 12.677065] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10099c [ 12.677481] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.677850] flags: 0x200000000000040(head|node=0|zone=2) [ 12.678103] page_type: f5(slab) [ 12.678312] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.678843] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.679164] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.679642] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.679996] head: 0200000000000001 ffffea0004026701 00000000ffffffff 00000000ffffffff [ 12.680415] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.680776] page dumped because: kasan: bad access detected [ 12.680981] [ 12.681064] Memory state around the buggy address: [ 12.681254] ffff88810099dd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.681533] ffff88810099dd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.681833] >ffff88810099de00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.682085] ^ [ 12.682241] ffff88810099de80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.682605] ffff88810099df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.682868] ================================================================== [ 12.683861] ================================================================== [ 12.684134] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 12.684407] Read of size 1 at addr ffff88810099de00 by task kunit_try_catch/181 [ 12.684747] [ 12.684851] CPU: 1 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.684888] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.684899] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.684917] Call Trace: [ 12.684927] <TASK> [ 12.684941] dump_stack_lvl+0x73/0xb0 [ 12.685208] print_report+0xd1/0x650 [ 12.685240] ? __virt_addr_valid+0x1db/0x2d0 [ 12.685263] ? krealloc_uaf+0x53c/0x5e0 [ 12.685283] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.685306] ? krealloc_uaf+0x53c/0x5e0 [ 12.685326] kasan_report+0x141/0x180 [ 12.685607] ? krealloc_uaf+0x53c/0x5e0 [ 12.685640] __asan_report_load1_noabort+0x18/0x20 [ 12.685665] krealloc_uaf+0x53c/0x5e0 [ 12.685686] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.685706] ? finish_task_switch.isra.0+0x153/0x700 [ 12.685729] ? __switch_to+0x47/0xf50 [ 12.685752] ? __schedule+0x10cc/0x2b60 [ 12.685775] ? __pfx_read_tsc+0x10/0x10 [ 12.685795] ? ktime_get_ts64+0x86/0x230 [ 12.685818] kunit_try_run_case+0x1a5/0x480 [ 12.685841] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.685863] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.685886] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.685910] ? __kthread_parkme+0x82/0x180 [ 12.685929] ? preempt_count_sub+0x50/0x80 [ 12.685952] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.685975] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.685999] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.686023] kthread+0x337/0x6f0 [ 12.686041] ? trace_preempt_on+0x20/0xc0 [ 12.686063] ? __pfx_kthread+0x10/0x10 [ 12.686083] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.686104] ? calculate_sigpending+0x7b/0xa0 [ 12.686128] ? __pfx_kthread+0x10/0x10 [ 12.686149] ret_from_fork+0x116/0x1d0 [ 12.686167] ? __pfx_kthread+0x10/0x10 [ 12.686186] ret_from_fork_asm+0x1a/0x30 [ 12.686216] </TASK> [ 12.686227] [ 12.694025] Allocated by task 181: [ 12.694216] kasan_save_stack+0x45/0x70 [ 12.694545] kasan_save_track+0x18/0x40 [ 12.694754] kasan_save_alloc_info+0x3b/0x50 [ 12.694972] __kasan_kmalloc+0xb7/0xc0 [ 12.695158] __kmalloc_cache_noprof+0x189/0x420 [ 12.695379] krealloc_uaf+0xbb/0x5e0 [ 12.695596] kunit_try_run_case+0x1a5/0x480 [ 12.695808] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.696005] kthread+0x337/0x6f0 [ 12.696125] ret_from_fork+0x116/0x1d0 [ 12.696265] ret_from_fork_asm+0x1a/0x30 [ 12.696438] [ 12.696531] Freed by task 181: [ 12.696686] kasan_save_stack+0x45/0x70 [ 12.696882] kasan_save_track+0x18/0x40 [ 12.697259] kasan_save_free_info+0x3f/0x60 [ 12.697605] __kasan_slab_free+0x56/0x70 [ 12.697808] kfree+0x222/0x3f0 [ 12.697925] krealloc_uaf+0x13d/0x5e0 [ 12.698072] kunit_try_run_case+0x1a5/0x480 [ 12.698282] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.698715] kthread+0x337/0x6f0 [ 12.698868] ret_from_fork+0x116/0x1d0 [ 12.699032] ret_from_fork_asm+0x1a/0x30 [ 12.699180] [ 12.699274] The buggy address belongs to the object at ffff88810099de00 [ 12.699274] which belongs to the cache kmalloc-256 of size 256 [ 12.699894] The buggy address is located 0 bytes inside of [ 12.699894] freed 256-byte region [ffff88810099de00, ffff88810099df00) [ 12.700340] [ 12.700597] The buggy address belongs to the physical page: [ 12.700833] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10099c [ 12.701145] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.701427] flags: 0x200000000000040(head|node=0|zone=2) [ 12.701700] page_type: f5(slab) [ 12.701859] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.702117] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.702346] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.702716] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.703063] head: 0200000000000001 ffffea0004026701 00000000ffffffff 00000000ffffffff [ 12.703501] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.703804] page dumped because: kasan: bad access detected [ 12.703983] [ 12.704077] Memory state around the buggy address: [ 12.704303] ffff88810099dd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.704636] ffff88810099dd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.704918] >ffff88810099de00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.705207] ^ [ 12.705369] ffff88810099de80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.705655] ffff88810099df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.705920] ==================================================================