Date
April 20, 2025, 11:09 p.m.
| Environment | |
|---|---|
| x15 | |
| x86 |
[ 56.102111] ================================================================== [ 56.114196] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x398/0x3d8 [ 56.120788] Read of size 1 at addr cc22bd88 by task kunit_try_catch/240 [ 56.127441] [ 56.128936] CPU: 1 UID: 0 PID: 240 Comm: kunit_try_catch Tainted: G B W N 6.15.0-rc3 #1 NONE [ 56.128967] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 56.128997] Hardware name: Generic DRA74X (Flattened Device Tree) [ 56.128997] Call trace: [ 56.128997] unwind_backtrace from show_stack+0x18/0x1c [ 56.129028] show_stack from dump_stack_lvl+0x70/0x90 [ 56.129058] dump_stack_lvl from print_report+0x158/0x528 [ 56.129089] print_report from kasan_report+0xdc/0x118 [ 56.129089] kasan_report from kmalloc_uaf+0x398/0x3d8 [ 56.129119] kmalloc_uaf from kunit_try_run_case+0x22c/0x5a8 [ 56.129150] kunit_try_run_case from kunit_generic_run_threadfn_adapter+0xc4/0x128 [ 56.129180] kunit_generic_run_threadfn_adapter from kthread+0x464/0x810 [ 56.129211] kthread from ret_from_fork+0x14/0x20 [ 56.129211] Exception stack(0xf249bfb0 to 0xf249bff8) [ 56.129241] bfa0: 00000000 00000000 00000000 00000000 [ 56.129241] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 56.129272] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 56.129272] [ 56.233093] Allocated by task 240: [ 56.236541] kasan_save_track+0x30/0x5c [ 56.240386] __kasan_kmalloc+0x8c/0x94 [ 56.244171] kmalloc_uaf+0xcc/0x3d8 [ 56.247711] kunit_try_run_case+0x22c/0x5a8 [ 56.251922] kunit_generic_run_threadfn_adapter+0xc4/0x128 [ 56.257446] kthread+0x464/0x810 [ 56.260711] ret_from_fork+0x14/0x20 [ 56.264312] [ 56.265808] Freed by task 240: [ 56.268890] kasan_save_track+0x30/0x5c [ 56.272735] kasan_save_free_info+0x3c/0x48 [ 56.276977] __kasan_slab_free+0x40/0x50 [ 56.280914] kfree+0xe8/0x384 [ 56.283905] kmalloc_uaf+0x174/0x3d8 [ 56.287536] kunit_try_run_case+0x22c/0x5a8 [ 56.291748] kunit_generic_run_threadfn_adapter+0xc4/0x128 [ 56.297271] kthread+0x464/0x810 [ 56.300537] ret_from_fork+0x14/0x20 [ 56.304138] [ 56.305633] The buggy address belongs to the object at cc22bd80 [ 56.305633] which belongs to the cache kmalloc-64 of size 64 [ 56.317352] The buggy address is located 8 bytes inside of [ 56.317352] freed 64-byte region [cc22bd80, cc22bdc0) [ 56.328033] [ 56.329528] The buggy address belongs to the physical page: [ 56.335144] page: refcount:0 mapcount:0 mapping:00000000 index:0x0 pfn:0x8c22b [ 56.342407] flags: 0x0(zone=0) [ 56.345489] page_type: f5(slab) [ 56.348663] raw: 00000000 c7001300 00000122 00000000 00000000 80200020 f5000000 00000000 [ 56.356811] raw: 00000000 [ 56.359436] page dumped because: kasan: bad access detected [ 56.365051] [ 56.366546] Memory state around the buggy address: [ 56.371368] cc22bc80: 00 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 56.377960] cc22bd00: 00 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 56.384521] >cc22bd80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 56.391082] ^ [ 56.393920] cc22be00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 56.400482] cc22be80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 56.407043] ==================================================================
[ 27.033790] ================================================================== [ 27.045804] BUG: KASAN: slab-use-after-free in kmalloc_uaf+0x320/0x380 [ 27.052338] Read of size 1 at addr ffff888105b98548 by task kunit_try_catch/227 [ 27.059654] [ 27.061152] CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT(voluntary) [ 27.061161] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.061163] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.7 12/07/2021 [ 27.061166] Call Trace: [ 27.061168] <TASK> [ 27.061170] dump_stack_lvl+0x73/0xb0 [ 27.061174] print_report+0xd1/0x650 [ 27.061178] ? __virt_addr_valid+0x1db/0x2d0 [ 27.061181] ? kmalloc_uaf+0x320/0x380 [ 27.061185] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.061189] ? kmalloc_uaf+0x320/0x380 [ 27.061193] kasan_report+0x141/0x180 [ 27.061197] ? kmalloc_uaf+0x320/0x380 [ 27.061202] __asan_report_load1_noabort+0x18/0x20 [ 27.061205] kmalloc_uaf+0x320/0x380 [ 27.061209] ? __pfx_kmalloc_uaf+0x10/0x10 [ 27.061213] ? __schedule+0x10cc/0x2b30 [ 27.061217] ? ktime_get_ts64+0x83/0x230 [ 27.061222] kunit_try_run_case+0x1a2/0x480 [ 27.061227] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.061231] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.061235] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.061239] ? __kthread_parkme+0x82/0x180 [ 27.061243] ? preempt_count_sub+0x50/0x80 [ 27.061248] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.061252] kunit_generic_run_threadfn_adapter+0x82/0xf0 [ 27.061256] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.061260] kthread+0x334/0x6f0 [ 27.061264] ? trace_preempt_on+0x20/0xc0 [ 27.061268] ? __pfx_kthread+0x10/0x10 [ 27.061273] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.061277] ? calculate_sigpending+0x7b/0xa0 [ 27.061280] ? __pfx_kthread+0x10/0x10 [ 27.061284] ret_from_fork+0x3e/0x80 [ 27.061288] ? __pfx_kthread+0x10/0x10 [ 27.061292] ret_from_fork_asm+0x1a/0x30 [ 27.061298] </TASK> [ 27.061300] [ 27.221608] Allocated by task 227: [ 27.225013] kasan_save_stack+0x45/0x70 [ 27.228854] kasan_save_track+0x18/0x40 [ 27.232699] kasan_save_alloc_info+0x3b/0x50 [ 27.237015] __kasan_kmalloc+0xb7/0xc0 [ 27.240769] __kmalloc_cache_noprof+0x189/0x420 [ 27.245300] kmalloc_uaf+0xaa/0x380 [ 27.248792] kunit_try_run_case+0x1a2/0x480 [ 27.252980] kunit_generic_run_threadfn_adapter+0x82/0xf0 [ 27.258385] kthread+0x334/0x6f0 [ 27.261620] ret_from_fork+0x3e/0x80 [ 27.265198] ret_from_fork_asm+0x1a/0x30 [ 27.269124] [ 27.270625] Freed by task 227: [ 27.273702] kasan_save_stack+0x45/0x70 [ 27.277558] kasan_save_track+0x18/0x40 [ 27.281394] kasan_save_free_info+0x3f/0x60 [ 27.285581] __kasan_slab_free+0x56/0x70 [ 27.289507] kfree+0x222/0x3f0 [ 27.292568] kmalloc_uaf+0x12c/0x380 [ 27.296146] kunit_try_run_case+0x1a2/0x480 [ 27.300332] kunit_generic_run_threadfn_adapter+0x82/0xf0 [ 27.305757] kthread+0x334/0x6f0 [ 27.308990] ret_from_fork+0x3e/0x80 [ 27.312576] ret_from_fork_asm+0x1a/0x30 [ 27.316502] [ 27.318002] The buggy address belongs to the object at ffff888105b98540 [ 27.318002] which belongs to the cache kmalloc-16 of size 16 [ 27.330342] The buggy address is located 8 bytes inside of [ 27.330342] freed 16-byte region [ffff888105b98540, ffff888105b98550) [ 27.342328] [ 27.343827] The buggy address belongs to the physical page: [ 27.349401] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105b98 [ 27.357407] flags: 0x200000000000000(node=0|zone=2) [ 27.362288] page_type: f5(slab) [ 27.365433] raw: 0200000000000000 ffff888100042640 dead000000000122 0000000000000000 [ 27.373172] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 27.380910] page dumped because: kasan: bad access detected [ 27.386483] [ 27.387984] Memory state around the buggy address: [ 27.392775] ffff888105b98400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 27.399994] ffff888105b98480: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 06 fc fc [ 27.407213] >ffff888105b98500: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 27.414432] ^ [ 27.420005] ffff888105b98580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.427224] ffff888105b98600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.434443] ==================================================================