Date
July 1, 2025, 11:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.481757] ================================================================== [ 18.481888] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x300/0x338 [ 18.482007] Read of size 1 at addr fff00000c5d4da48 by task kunit_try_catch/185 [ 18.482066] [ 18.482128] CPU: 1 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.482243] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.482273] Hardware name: linux,dummy-virt (DT) [ 18.482587] Call trace: [ 18.482662] show_stack+0x20/0x38 (C) [ 18.482883] dump_stack_lvl+0x8c/0xd0 [ 18.482975] print_report+0x118/0x608 [ 18.483048] kasan_report+0xdc/0x128 [ 18.483096] __asan_report_load1_noabort+0x20/0x30 [ 18.483281] kmalloc_uaf+0x300/0x338 [ 18.483367] kunit_try_run_case+0x170/0x3f0 [ 18.483459] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.483560] kthread+0x328/0x630 [ 18.483644] ret_from_fork+0x10/0x20 [ 18.483859] [ 18.483995] Allocated by task 185: [ 18.484062] kasan_save_stack+0x3c/0x68 [ 18.484193] kasan_save_track+0x20/0x40 [ 18.484312] kasan_save_alloc_info+0x40/0x58 [ 18.484430] __kasan_kmalloc+0xd4/0xd8 [ 18.484532] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.484628] kmalloc_uaf+0xb8/0x338 [ 18.484702] kunit_try_run_case+0x170/0x3f0 [ 18.484849] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.484931] kthread+0x328/0x630 [ 18.484977] ret_from_fork+0x10/0x20 [ 18.485019] [ 18.485039] Freed by task 185: [ 18.485068] kasan_save_stack+0x3c/0x68 [ 18.485279] kasan_save_track+0x20/0x40 [ 18.485330] kasan_save_free_info+0x4c/0x78 [ 18.485372] __kasan_slab_free+0x6c/0x98 [ 18.485413] kfree+0x214/0x3c8 [ 18.485448] kmalloc_uaf+0x11c/0x338 [ 18.485485] kunit_try_run_case+0x170/0x3f0 [ 18.485672] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.485802] kthread+0x328/0x630 [ 18.485837] ret_from_fork+0x10/0x20 [ 18.485876] [ 18.486067] The buggy address belongs to the object at fff00000c5d4da40 [ 18.486067] which belongs to the cache kmalloc-16 of size 16 [ 18.486282] The buggy address is located 8 bytes inside of [ 18.486282] freed 16-byte region [fff00000c5d4da40, fff00000c5d4da50) [ 18.486451] [ 18.486519] The buggy address belongs to the physical page: [ 18.486568] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105d4d [ 18.486630] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.486689] page_type: f5(slab) [ 18.486737] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.486792] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.486840] page dumped because: kasan: bad access detected [ 18.486876] [ 18.486895] Memory state around the buggy address: [ 18.486951] fff00000c5d4d900: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.487010] fff00000c5d4d980: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.487076] >fff00000c5d4da00: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 18.487554] ^ [ 18.487605] fff00000c5d4da80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.487654] fff00000c5d4db00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.487701] ==================================================================
[ 11.741685] ================================================================== [ 11.742210] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x320/0x380 [ 11.742556] Read of size 1 at addr ffff888102531768 by task kunit_try_catch/201 [ 11.742903] [ 11.743001] CPU: 0 UID: 0 PID: 201 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.743049] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.743061] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.743085] Call Trace: [ 11.743099] <TASK> [ 11.743120] dump_stack_lvl+0x73/0xb0 [ 11.743150] print_report+0xd1/0x650 [ 11.743174] ? __virt_addr_valid+0x1db/0x2d0 [ 11.743198] ? kmalloc_uaf+0x320/0x380 [ 11.743217] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.743238] ? kmalloc_uaf+0x320/0x380 [ 11.743257] kasan_report+0x141/0x180 [ 11.743278] ? kmalloc_uaf+0x320/0x380 [ 11.743301] __asan_report_load1_noabort+0x18/0x20 [ 11.743326] kmalloc_uaf+0x320/0x380 [ 11.743345] ? __pfx_kmalloc_uaf+0x10/0x10 [ 11.743365] ? __schedule+0x10cc/0x2b60 [ 11.743398] ? __pfx_read_tsc+0x10/0x10 [ 11.743419] ? ktime_get_ts64+0x86/0x230 [ 11.743443] kunit_try_run_case+0x1a5/0x480 [ 11.743468] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.743489] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.743512] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.743533] ? __kthread_parkme+0x82/0x180 [ 11.743554] ? preempt_count_sub+0x50/0x80 [ 11.743734] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.743763] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.743785] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.743807] kthread+0x337/0x6f0 [ 11.743827] ? trace_preempt_on+0x20/0xc0 [ 11.743851] ? __pfx_kthread+0x10/0x10 [ 11.743871] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.743892] ? calculate_sigpending+0x7b/0xa0 [ 11.743915] ? __pfx_kthread+0x10/0x10 [ 11.743935] ret_from_fork+0x116/0x1d0 [ 11.743952] ? __pfx_kthread+0x10/0x10 [ 11.744020] ret_from_fork_asm+0x1a/0x30 [ 11.744053] </TASK> [ 11.744065] [ 11.751910] Allocated by task 201: [ 11.752072] kasan_save_stack+0x45/0x70 [ 11.752270] kasan_save_track+0x18/0x40 [ 11.752459] kasan_save_alloc_info+0x3b/0x50 [ 11.752713] __kasan_kmalloc+0xb7/0xc0 [ 11.752878] __kmalloc_cache_noprof+0x189/0x420 [ 11.753082] kmalloc_uaf+0xaa/0x380 [ 11.753223] kunit_try_run_case+0x1a5/0x480 [ 11.753381] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.753679] kthread+0x337/0x6f0 [ 11.753850] ret_from_fork+0x116/0x1d0 [ 11.754043] ret_from_fork_asm+0x1a/0x30 [ 11.754243] [ 11.754331] Freed by task 201: [ 11.754453] kasan_save_stack+0x45/0x70 [ 11.754589] kasan_save_track+0x18/0x40 [ 11.754723] kasan_save_free_info+0x3f/0x60 [ 11.754896] __kasan_slab_free+0x56/0x70 [ 11.755088] kfree+0x222/0x3f0 [ 11.755253] kmalloc_uaf+0x12c/0x380 [ 11.755508] kunit_try_run_case+0x1a5/0x480 [ 11.755883] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.756341] kthread+0x337/0x6f0 [ 11.756540] ret_from_fork+0x116/0x1d0 [ 11.756719] ret_from_fork_asm+0x1a/0x30 [ 11.756888] [ 11.757106] The buggy address belongs to the object at ffff888102531760 [ 11.757106] which belongs to the cache kmalloc-16 of size 16 [ 11.757597] The buggy address is located 8 bytes inside of [ 11.757597] freed 16-byte region [ffff888102531760, ffff888102531770) [ 11.758126] [ 11.758205] The buggy address belongs to the physical page: [ 11.758390] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102531 [ 11.758750] flags: 0x200000000000000(node=0|zone=2) [ 11.759208] page_type: f5(slab) [ 11.759383] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.759623] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.759850] page dumped because: kasan: bad access detected [ 11.760079] [ 11.760171] Memory state around the buggy address: [ 11.760456] ffff888102531600: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.761162] ffff888102531680: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.761464] >ffff888102531700: fa fb fc fc fa fb fc fc 00 05 fc fc fa fb fc fc [ 11.761749] ^ [ 11.761953] ffff888102531780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.762404] ffff888102531800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.762656] ==================================================================