Date
July 14, 2025, 10:38 a.m.
| Environment | |
|---|---|
| e850-96 | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 42.527865] ================================================================== [ 42.537122] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 42.543888] Read of size 16 at addr ffff000804b5a080 by task kunit_try_catch/252 [ 42.551265] [ 42.552750] CPU: 2 UID: 0 PID: 252 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250714 #1 PREEMPT [ 42.552801] Tainted: [B]=BAD_PAGE, [N]=TEST [ 42.552819] Hardware name: WinLink E850-96 board (DT) [ 42.552839] Call trace: [ 42.552854] show_stack+0x20/0x38 (C) [ 42.552887] dump_stack_lvl+0x8c/0xd0 [ 42.552919] print_report+0x118/0x5d0 [ 42.552946] kasan_report+0xdc/0x128 [ 42.552973] __asan_report_load16_noabort+0x20/0x30 [ 42.553007] kmalloc_uaf_16+0x3bc/0x438 [ 42.553036] kunit_try_run_case+0x170/0x3f0 [ 42.553073] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 42.553105] kthread+0x328/0x630 [ 42.553135] ret_from_fork+0x10/0x20 [ 42.553168] [ 42.616542] Allocated by task 252: [ 42.619930] kasan_save_stack+0x3c/0x68 [ 42.623746] kasan_save_track+0x20/0x40 [ 42.627565] kasan_save_alloc_info+0x40/0x58 [ 42.631818] __kasan_kmalloc+0xd4/0xd8 [ 42.635552] __kmalloc_cache_noprof+0x16c/0x3c0 [ 42.640065] kmalloc_uaf_16+0x140/0x438 [ 42.643884] kunit_try_run_case+0x170/0x3f0 [ 42.648051] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 42.653521] kthread+0x328/0x630 [ 42.656731] ret_from_fork+0x10/0x20 [ 42.660291] [ 42.661766] Freed by task 252: [ 42.664805] kasan_save_stack+0x3c/0x68 [ 42.668624] kasan_save_track+0x20/0x40 [ 42.672445] kasan_save_free_info+0x4c/0x78 [ 42.676610] __kasan_slab_free+0x6c/0x98 [ 42.680516] kfree+0x214/0x3c8 [ 42.683554] kmalloc_uaf_16+0x190/0x438 [ 42.687374] kunit_try_run_case+0x170/0x3f0 [ 42.691540] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 42.697009] kthread+0x328/0x630 [ 42.700221] ret_from_fork+0x10/0x20 [ 42.703779] [ 42.705255] The buggy address belongs to the object at ffff000804b5a080 [ 42.705255] which belongs to the cache kmalloc-16 of size 16 [ 42.717585] The buggy address is located 0 bytes inside of [ 42.717585] freed 16-byte region [ffff000804b5a080, ffff000804b5a090) [ 42.729560] [ 42.731038] The buggy address belongs to the physical page: [ 42.736596] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x884b5a [ 42.744581] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 42.751091] page_type: f5(slab) [ 42.754226] raw: 0bfffe0000000000 ffff000800002640 dead000000000122 0000000000000000 [ 42.761945] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 42.769666] page dumped because: kasan: bad access detected [ 42.775219] [ 42.776695] Memory state around the buggy address: [ 42.781477] ffff000804b59f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 42.788679] ffff000804b5a000: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc [ 42.795883] >ffff000804b5a080: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.803084] ^ [ 42.806299] ffff000804b5a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.813504] ffff000804b5a180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.820706] ==================================================================
[ 29.562476] ================================================================== [ 29.562555] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 29.562618] Read of size 16 at addr fff00000c64c1ae0 by task kunit_try_catch/199 [ 29.562854] [ 29.562913] CPU: 0 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250714 #1 PREEMPT [ 29.562999] Tainted: [B]=BAD_PAGE, [N]=TEST [ 29.563031] Hardware name: linux,dummy-virt (DT) [ 29.563100] Call trace: [ 29.563133] show_stack+0x20/0x38 (C) [ 29.563185] dump_stack_lvl+0x8c/0xd0 [ 29.563230] print_report+0x118/0x5d0 [ 29.563272] kasan_report+0xdc/0x128 [ 29.563314] __asan_report_load16_noabort+0x20/0x30 [ 29.563362] kmalloc_uaf_16+0x3bc/0x438 [ 29.563416] kunit_try_run_case+0x170/0x3f0 [ 29.563472] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.563521] kthread+0x328/0x630 [ 29.563562] ret_from_fork+0x10/0x20 [ 29.563608] [ 29.563626] Allocated by task 199: [ 29.563822] kasan_save_stack+0x3c/0x68 [ 29.563880] kasan_save_track+0x20/0x40 [ 29.563918] kasan_save_alloc_info+0x40/0x58 [ 29.564123] __kasan_kmalloc+0xd4/0xd8 [ 29.564658] __kmalloc_cache_noprof+0x16c/0x3c0 [ 29.564894] kmalloc_uaf_16+0x140/0x438 [ 29.564944] kunit_try_run_case+0x170/0x3f0 [ 29.564984] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.565384] kthread+0x328/0x630 [ 29.565593] ret_from_fork+0x10/0x20 [ 29.565898] [ 29.565974] Freed by task 199: [ 29.566002] kasan_save_stack+0x3c/0x68 [ 29.566044] kasan_save_track+0x20/0x40 [ 29.566728] kasan_save_free_info+0x4c/0x78 [ 29.566775] __kasan_slab_free+0x6c/0x98 [ 29.567040] kfree+0x214/0x3c8 [ 29.567094] kmalloc_uaf_16+0x190/0x438 [ 29.567131] kunit_try_run_case+0x170/0x3f0 [ 29.567169] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.567947] kthread+0x328/0x630 [ 29.568009] ret_from_fork+0x10/0x20 [ 29.568472] [ 29.568654] The buggy address belongs to the object at fff00000c64c1ae0 [ 29.568654] which belongs to the cache kmalloc-16 of size 16 [ 29.568720] The buggy address is located 0 bytes inside of [ 29.568720] freed 16-byte region [fff00000c64c1ae0, fff00000c64c1af0) [ 29.568779] [ 29.569119] The buggy address belongs to the physical page: [ 29.569371] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xfff00000c64c1a40 pfn:0x1064c1 [ 29.569952] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 29.570261] page_type: f5(slab) [ 29.570507] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 29.570655] raw: fff00000c64c1a40 000000008080007f 00000000f5000000 0000000000000000 [ 29.570957] page dumped because: kasan: bad access detected [ 29.570989] [ 29.571007] Memory state around the buggy address: [ 29.571043] fff00000c64c1980: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 29.571474] fff00000c64c1a00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 29.571548] >fff00000c64c1a80: fa fb fc fc fa fb fc fc 00 00 fc fc fa fb fc fc [ 29.571585] ^ [ 29.571829] fff00000c64c1b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.571872] fff00000c64c1b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.571909] ==================================================================
[ 24.273911] ================================================================== [ 24.275036] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 24.275630] Read of size 16 at addr ffff888103e49440 by task kunit_try_catch/217 [ 24.276504] [ 24.276704] CPU: 0 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc6-next-20250714 #1 PREEMPT(voluntary) [ 24.276759] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 24.276772] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.276796] Call Trace: [ 24.276810] <TASK> [ 24.276842] dump_stack_lvl+0x73/0xb0 [ 24.276876] print_report+0xd1/0x610 [ 24.276899] ? __virt_addr_valid+0x1db/0x2d0 [ 24.276923] ? kmalloc_uaf_16+0x47b/0x4c0 [ 24.276942] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.276979] ? kmalloc_uaf_16+0x47b/0x4c0 [ 24.276999] kasan_report+0x141/0x180 [ 24.277020] ? kmalloc_uaf_16+0x47b/0x4c0 [ 24.277044] __asan_report_load16_noabort+0x18/0x20 [ 24.277067] kmalloc_uaf_16+0x47b/0x4c0 [ 24.277087] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 24.277108] ? __schedule+0x10cc/0x2b60 [ 24.277131] ? __pfx_read_tsc+0x10/0x10 [ 24.277152] ? ktime_get_ts64+0x86/0x230 [ 24.277177] kunit_try_run_case+0x1a5/0x480 [ 24.277200] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.277219] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 24.277242] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.277265] ? __kthread_parkme+0x82/0x180 [ 24.277287] ? preempt_count_sub+0x50/0x80 [ 24.277311] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.277331] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.277356] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.277380] kthread+0x337/0x6f0 [ 24.277400] ? trace_preempt_on+0x20/0xc0 [ 24.277423] ? __pfx_kthread+0x10/0x10 [ 24.277443] ? _raw_spin_unlock_irq+0x47/0x80 [ 24.277464] ? calculate_sigpending+0x7b/0xa0 [ 24.277487] ? __pfx_kthread+0x10/0x10 [ 24.277508] ret_from_fork+0x116/0x1d0 [ 24.277527] ? __pfx_kthread+0x10/0x10 [ 24.277547] ret_from_fork_asm+0x1a/0x30 [ 24.277577] </TASK> [ 24.277588] [ 24.288843] Allocated by task 217: [ 24.289228] kasan_save_stack+0x45/0x70 [ 24.289550] kasan_save_track+0x18/0x40 [ 24.289985] kasan_save_alloc_info+0x3b/0x50 [ 24.290427] __kasan_kmalloc+0xb7/0xc0 [ 24.290562] __kmalloc_cache_noprof+0x189/0x420 [ 24.290724] kmalloc_uaf_16+0x15b/0x4c0 [ 24.291159] kunit_try_run_case+0x1a5/0x480 [ 24.291640] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.292311] kthread+0x337/0x6f0 [ 24.292606] ret_from_fork+0x116/0x1d0 [ 24.293098] ret_from_fork_asm+0x1a/0x30 [ 24.293445] [ 24.293512] Freed by task 217: [ 24.293617] kasan_save_stack+0x45/0x70 [ 24.293764] kasan_save_track+0x18/0x40 [ 24.293892] kasan_save_free_info+0x3f/0x60 [ 24.294030] __kasan_slab_free+0x56/0x70 [ 24.294163] kfree+0x222/0x3f0 [ 24.294273] kmalloc_uaf_16+0x1d6/0x4c0 [ 24.294402] kunit_try_run_case+0x1a5/0x480 [ 24.294539] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.294922] kthread+0x337/0x6f0 [ 24.295211] ret_from_fork+0x116/0x1d0 [ 24.295586] ret_from_fork_asm+0x1a/0x30 [ 24.295997] [ 24.296246] The buggy address belongs to the object at ffff888103e49440 [ 24.296246] which belongs to the cache kmalloc-16 of size 16 [ 24.297385] The buggy address is located 0 bytes inside of [ 24.297385] freed 16-byte region [ffff888103e49440, ffff888103e49450) [ 24.298375] [ 24.298548] The buggy address belongs to the physical page: [ 24.299084] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103e49 [ 24.299896] flags: 0x200000000000000(node=0|zone=2) [ 24.300460] page_type: f5(slab) [ 24.300825] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 24.301711] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 24.302513] page dumped because: kasan: bad access detected [ 24.303137] [ 24.303353] Memory state around the buggy address: [ 24.303801] ffff888103e49300: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.304071] ffff888103e49380: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.304296] >ffff888103e49400: fa fb fc fc 00 00 fc fc fa fb fc fc fc fc fc fc [ 24.304503] ^ [ 24.304677] ffff888103e49480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.304886] ffff888103e49500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.305090] ==================================================================