Date
July 15, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.457367] ================================================================== [ 15.457427] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x4c8/0x520 [ 15.457482] Read of size 1 at addr fff00000c175f200 by task kunit_try_catch/165 [ 15.457531] [ 15.457563] CPU: 1 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.457641] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.458332] Hardware name: linux,dummy-virt (DT) [ 15.458376] Call trace: [ 15.458398] show_stack+0x20/0x38 (C) [ 15.458450] dump_stack_lvl+0x8c/0xd0 [ 15.458496] print_report+0x118/0x5d0 [ 15.459000] kasan_report+0xdc/0x128 [ 15.459216] __asan_report_load1_noabort+0x20/0x30 [ 15.459290] krealloc_uaf+0x4c8/0x520 [ 15.459334] kunit_try_run_case+0x170/0x3f0 [ 15.459380] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.459431] kthread+0x328/0x630 [ 15.459473] ret_from_fork+0x10/0x20 [ 15.459519] [ 15.459536] Allocated by task 165: [ 15.459564] kasan_save_stack+0x3c/0x68 [ 15.459949] kasan_save_track+0x20/0x40 [ 15.459994] kasan_save_alloc_info+0x40/0x58 [ 15.460033] __kasan_kmalloc+0xd4/0xd8 [ 15.460068] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.460105] krealloc_uaf+0xc8/0x520 [ 15.460138] kunit_try_run_case+0x170/0x3f0 [ 15.460418] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.460472] kthread+0x328/0x630 [ 15.460505] ret_from_fork+0x10/0x20 [ 15.460540] [ 15.460558] Freed by task 165: [ 15.460630] kasan_save_stack+0x3c/0x68 [ 15.460712] kasan_save_track+0x20/0x40 [ 15.460822] kasan_save_free_info+0x4c/0x78 [ 15.461003] __kasan_slab_free+0x6c/0x98 [ 15.461040] kfree+0x214/0x3c8 [ 15.461072] krealloc_uaf+0x12c/0x520 [ 15.461105] kunit_try_run_case+0x170/0x3f0 [ 15.461140] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.461463] kthread+0x328/0x630 [ 15.461526] ret_from_fork+0x10/0x20 [ 15.461561] [ 15.461580] The buggy address belongs to the object at fff00000c175f200 [ 15.461580] which belongs to the cache kmalloc-256 of size 256 [ 15.461649] The buggy address is located 0 bytes inside of [ 15.461649] freed 256-byte region [fff00000c175f200, fff00000c175f300) [ 15.461825] [ 15.461843] The buggy address belongs to the physical page: [ 15.461902] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10175e [ 15.461958] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.462005] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.462057] page_type: f5(slab) [ 15.462093] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.462152] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.462212] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.462260] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.462483] head: 0bfffe0000000001 ffffc1ffc305d781 00000000ffffffff 00000000ffffffff [ 15.462535] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.462800] page dumped because: kasan: bad access detected [ 15.462833] [ 15.462849] Memory state around the buggy address: [ 15.462881] fff00000c175f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.462923] fff00000c175f180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.462965] >fff00000c175f200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.463002] ^ [ 15.463034] fff00000c175f280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.463427] fff00000c175f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.463468] ================================================================== [ 15.440041] ================================================================== [ 15.440291] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x180/0x520 [ 15.440350] Read of size 1 at addr fff00000c175f200 by task kunit_try_catch/165 [ 15.440401] [ 15.440434] CPU: 1 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.440521] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.440546] Hardware name: linux,dummy-virt (DT) [ 15.440575] Call trace: [ 15.440596] show_stack+0x20/0x38 (C) [ 15.440644] dump_stack_lvl+0x8c/0xd0 [ 15.441241] print_report+0x118/0x5d0 [ 15.441659] kasan_report+0xdc/0x128 [ 15.441799] __kasan_check_byte+0x54/0x70 [ 15.441996] krealloc_noprof+0x44/0x360 [ 15.442270] krealloc_uaf+0x180/0x520 [ 15.442517] kunit_try_run_case+0x170/0x3f0 [ 15.442568] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.442738] kthread+0x328/0x630 [ 15.442784] ret_from_fork+0x10/0x20 [ 15.443217] [ 15.443266] Allocated by task 165: [ 15.443522] kasan_save_stack+0x3c/0x68 [ 15.443738] kasan_save_track+0x20/0x40 [ 15.443848] kasan_save_alloc_info+0x40/0x58 [ 15.443902] __kasan_kmalloc+0xd4/0xd8 [ 15.444022] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.444059] krealloc_uaf+0xc8/0x520 [ 15.444505] kunit_try_run_case+0x170/0x3f0 [ 15.444555] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.444607] kthread+0x328/0x630 [ 15.444638] ret_from_fork+0x10/0x20 [ 15.444674] [ 15.444693] Freed by task 165: [ 15.445266] kasan_save_stack+0x3c/0x68 [ 15.445314] kasan_save_track+0x20/0x40 [ 15.445350] kasan_save_free_info+0x4c/0x78 [ 15.445389] __kasan_slab_free+0x6c/0x98 [ 15.445702] kfree+0x214/0x3c8 [ 15.445913] krealloc_uaf+0x12c/0x520 [ 15.445955] kunit_try_run_case+0x170/0x3f0 [ 15.445992] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.446062] kthread+0x328/0x630 [ 15.446207] ret_from_fork+0x10/0x20 [ 15.446529] [ 15.446726] The buggy address belongs to the object at fff00000c175f200 [ 15.446726] which belongs to the cache kmalloc-256 of size 256 [ 15.447040] The buggy address is located 0 bytes inside of [ 15.447040] freed 256-byte region [fff00000c175f200, fff00000c175f300) [ 15.447513] [ 15.447538] The buggy address belongs to the physical page: [ 15.447572] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10175e [ 15.447895] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 15.447948] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 15.448001] page_type: f5(slab) [ 15.448047] raw: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.448235] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.448283] head: 0bfffe0000000040 fff00000c0001b40 dead000000000122 0000000000000000 [ 15.448735] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.448788] head: 0bfffe0000000001 ffffc1ffc305d781 00000000ffffffff 00000000ffffffff [ 15.449043] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 15.449360] page dumped because: kasan: bad access detected [ 15.449394] [ 15.449411] Memory state around the buggy address: [ 15.449443] fff00000c175f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.449685] fff00000c175f180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.449729] >fff00000c175f200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.449998] ^ [ 15.450193] fff00000c175f280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.450334] fff00000c175f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.451403] ==================================================================
[ 12.444425] ================================================================== [ 12.445167] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x1b8/0x5e0 [ 12.445440] Read of size 1 at addr ffff888100350800 by task kunit_try_catch/181 [ 12.446006] [ 12.446120] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.446166] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.446177] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.446198] Call Trace: [ 12.446209] <TASK> [ 12.446223] dump_stack_lvl+0x73/0xb0 [ 12.446255] print_report+0xd1/0x610 [ 12.446278] ? __virt_addr_valid+0x1db/0x2d0 [ 12.446301] ? krealloc_uaf+0x1b8/0x5e0 [ 12.446323] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.446347] ? krealloc_uaf+0x1b8/0x5e0 [ 12.446369] kasan_report+0x141/0x180 [ 12.446397] ? krealloc_uaf+0x1b8/0x5e0 [ 12.446422] ? krealloc_uaf+0x1b8/0x5e0 [ 12.446516] __kasan_check_byte+0x3d/0x50 [ 12.446542] krealloc_noprof+0x3f/0x340 [ 12.446566] krealloc_uaf+0x1b8/0x5e0 [ 12.446589] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.446612] ? finish_task_switch.isra.0+0x153/0x700 [ 12.446639] ? __switch_to+0x47/0xf50 [ 12.446666] ? __schedule+0x10cc/0x2b60 [ 12.446689] ? __pfx_read_tsc+0x10/0x10 [ 12.446709] ? ktime_get_ts64+0x86/0x230 [ 12.446737] kunit_try_run_case+0x1a5/0x480 [ 12.446775] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.446799] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.446824] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.446850] ? __kthread_parkme+0x82/0x180 [ 12.446872] ? preempt_count_sub+0x50/0x80 [ 12.446896] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.446921] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.446946] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.446972] kthread+0x337/0x6f0 [ 12.446991] ? trace_preempt_on+0x20/0xc0 [ 12.447014] ? __pfx_kthread+0x10/0x10 [ 12.447035] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.447057] ? calculate_sigpending+0x7b/0xa0 [ 12.447081] ? __pfx_kthread+0x10/0x10 [ 12.447103] ret_from_fork+0x116/0x1d0 [ 12.447121] ? __pfx_kthread+0x10/0x10 [ 12.447142] ret_from_fork_asm+0x1a/0x30 [ 12.447173] </TASK> [ 12.447183] [ 12.455098] Allocated by task 181: [ 12.455234] kasan_save_stack+0x45/0x70 [ 12.455459] kasan_save_track+0x18/0x40 [ 12.455652] kasan_save_alloc_info+0x3b/0x50 [ 12.455975] __kasan_kmalloc+0xb7/0xc0 [ 12.456168] __kmalloc_cache_noprof+0x189/0x420 [ 12.456372] krealloc_uaf+0xbb/0x5e0 [ 12.456658] kunit_try_run_case+0x1a5/0x480 [ 12.456828] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.457007] kthread+0x337/0x6f0 [ 12.457166] ret_from_fork+0x116/0x1d0 [ 12.457349] ret_from_fork_asm+0x1a/0x30 [ 12.457648] [ 12.457803] Freed by task 181: [ 12.457985] kasan_save_stack+0x45/0x70 [ 12.458171] kasan_save_track+0x18/0x40 [ 12.458307] kasan_save_free_info+0x3f/0x60 [ 12.458522] __kasan_slab_free+0x56/0x70 [ 12.458795] kfree+0x222/0x3f0 [ 12.458966] krealloc_uaf+0x13d/0x5e0 [ 12.459106] kunit_try_run_case+0x1a5/0x480 [ 12.459309] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.459749] kthread+0x337/0x6f0 [ 12.459951] ret_from_fork+0x116/0x1d0 [ 12.460141] ret_from_fork_asm+0x1a/0x30 [ 12.460325] [ 12.460411] The buggy address belongs to the object at ffff888100350800 [ 12.460411] which belongs to the cache kmalloc-256 of size 256 [ 12.461012] The buggy address is located 0 bytes inside of [ 12.461012] freed 256-byte region [ffff888100350800, ffff888100350900) [ 12.461552] [ 12.461652] The buggy address belongs to the physical page: [ 12.461891] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100350 [ 12.462235] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.462590] flags: 0x200000000000040(head|node=0|zone=2) [ 12.462850] page_type: f5(slab) [ 12.463007] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.463325] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.463675] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.464067] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.464404] head: 0200000000000001 ffffea000400d401 00000000ffffffff 00000000ffffffff [ 12.464681] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.464921] page dumped because: kasan: bad access detected [ 12.465092] [ 12.465189] Memory state around the buggy address: [ 12.465604] ffff888100350700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.465984] ffff888100350780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.466545] >ffff888100350800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.466855] ^ [ 12.467010] ffff888100350880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.467287] ffff888100350900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.467581] ================================================================== [ 12.471496] ================================================================== [ 12.471815] BUG: KASAN: slab-use-after-free in krealloc_uaf+0x53c/0x5e0 [ 12.472124] Read of size 1 at addr ffff888100350800 by task kunit_try_catch/181 [ 12.472420] [ 12.472529] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.472571] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.472582] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.472602] Call Trace: [ 12.472613] <TASK> [ 12.472626] dump_stack_lvl+0x73/0xb0 [ 12.472654] print_report+0xd1/0x610 [ 12.472675] ? __virt_addr_valid+0x1db/0x2d0 [ 12.472696] ? krealloc_uaf+0x53c/0x5e0 [ 12.472716] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.472739] ? krealloc_uaf+0x53c/0x5e0 [ 12.472926] kasan_report+0x141/0x180 [ 12.472956] ? krealloc_uaf+0x53c/0x5e0 [ 12.472983] __asan_report_load1_noabort+0x18/0x20 [ 12.473009] krealloc_uaf+0x53c/0x5e0 [ 12.473030] ? __pfx_krealloc_uaf+0x10/0x10 [ 12.473052] ? finish_task_switch.isra.0+0x153/0x700 [ 12.473075] ? __switch_to+0x47/0xf50 [ 12.473100] ? __schedule+0x10cc/0x2b60 [ 12.473122] ? __pfx_read_tsc+0x10/0x10 [ 12.473144] ? ktime_get_ts64+0x86/0x230 [ 12.473167] kunit_try_run_case+0x1a5/0x480 [ 12.473192] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.473215] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.473240] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.473264] ? __kthread_parkme+0x82/0x180 [ 12.473284] ? preempt_count_sub+0x50/0x80 [ 12.473307] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.473661] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.473687] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.473713] kthread+0x337/0x6f0 [ 12.473733] ? trace_preempt_on+0x20/0xc0 [ 12.473769] ? __pfx_kthread+0x10/0x10 [ 12.473790] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.473812] ? calculate_sigpending+0x7b/0xa0 [ 12.473837] ? __pfx_kthread+0x10/0x10 [ 12.473858] ret_from_fork+0x116/0x1d0 [ 12.473877] ? __pfx_kthread+0x10/0x10 [ 12.473898] ret_from_fork_asm+0x1a/0x30 [ 12.473928] </TASK> [ 12.473938] [ 12.481560] Allocated by task 181: [ 12.481722] kasan_save_stack+0x45/0x70 [ 12.481900] kasan_save_track+0x18/0x40 [ 12.482037] kasan_save_alloc_info+0x3b/0x50 [ 12.482186] __kasan_kmalloc+0xb7/0xc0 [ 12.482589] __kmalloc_cache_noprof+0x189/0x420 [ 12.482842] krealloc_uaf+0xbb/0x5e0 [ 12.483031] kunit_try_run_case+0x1a5/0x480 [ 12.483230] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.483568] kthread+0x337/0x6f0 [ 12.483703] ret_from_fork+0x116/0x1d0 [ 12.483860] ret_from_fork_asm+0x1a/0x30 [ 12.484060] [ 12.484158] Freed by task 181: [ 12.484381] kasan_save_stack+0x45/0x70 [ 12.484599] kasan_save_track+0x18/0x40 [ 12.484782] kasan_save_free_info+0x3f/0x60 [ 12.484970] __kasan_slab_free+0x56/0x70 [ 12.485131] kfree+0x222/0x3f0 [ 12.485249] krealloc_uaf+0x13d/0x5e0 [ 12.485440] kunit_try_run_case+0x1a5/0x480 [ 12.485623] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.485889] kthread+0x337/0x6f0 [ 12.486059] ret_from_fork+0x116/0x1d0 [ 12.486245] ret_from_fork_asm+0x1a/0x30 [ 12.486530] [ 12.486632] The buggy address belongs to the object at ffff888100350800 [ 12.486632] which belongs to the cache kmalloc-256 of size 256 [ 12.487176] The buggy address is located 0 bytes inside of [ 12.487176] freed 256-byte region [ffff888100350800, ffff888100350900) [ 12.487790] [ 12.487893] The buggy address belongs to the physical page: [ 12.488149] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100350 [ 12.488517] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.488849] flags: 0x200000000000040(head|node=0|zone=2) [ 12.489032] page_type: f5(slab) [ 12.489170] raw: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.489519] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.489938] head: 0200000000000040 ffff888100041b40 dead000000000122 0000000000000000 [ 12.490270] head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.490661] head: 0200000000000001 ffffea000400d401 00000000ffffffff 00000000ffffffff [ 12.490994] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 12.491306] page dumped because: kasan: bad access detected [ 12.491590] [ 12.491686] Memory state around the buggy address: [ 12.491904] ffff888100350700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.492152] ffff888100350780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.492528] >ffff888100350800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.492860] ^ [ 12.492988] ffff888100350880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.493204] ffff888100350900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.493746] ==================================================================