Date
Feb. 5, 2025, 2:09 p.m.
| Environment | |
|---|---|
| qemu-armv7 | |
| qemu-x86_64 |
[ 147.249659] ================================================================== [ 147.250630] BUG: KASAN: slab-use-after-free in strnlen+0x30/0x58 [ 147.251122] Read of size 1 at addr c8fba210 by task kunit_try_catch/199 [ 147.251734] [ 147.252174] CPU: 1 PID: 199 Comm: kunit_try_catch Tainted: G B N 6.6.76-rc1 #1 [ 147.253126] Hardware name: Generic DT based system [ 147.253785] unwind_backtrace from show_stack+0x18/0x1c [ 147.254386] show_stack from dump_stack_lvl+0x58/0x70 [ 147.255144] dump_stack_lvl from print_report+0x164/0x51c [ 147.255962] print_report from kasan_report+0xc8/0x104 [ 147.257792] kasan_report from strnlen+0x30/0x58 [ 147.258522] strnlen from kasan_strings+0x1dc/0x4ec [ 147.259321] kasan_strings from kunit_try_run_case+0x11c/0x2e4 [ 147.260071] kunit_try_run_case from kunit_generic_run_threadfn_adapter+0x2c/0x48 [ 147.261103] kunit_generic_run_threadfn_adapter from kthread+0x184/0x1a8 [ 147.262082] kthread from ret_from_fork+0x14/0x30 [ 147.262703] Exception stack(0xfa0fbfb0 to 0xfa0fbff8) [ 147.263412] bfa0: 00000000 00000000 00000000 00000000 [ 147.264264] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 147.265137] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 147.265981] [ 147.266481] Allocated by task 199: [ 147.266865] kasan_set_track+0x3c/0x5c [ 147.267500] __kasan_kmalloc+0x8c/0x94 [ 147.267936] kasan_strings+0xa0/0x4ec [ 147.268568] kunit_try_run_case+0x11c/0x2e4 [ 147.269074] kunit_generic_run_threadfn_adapter+0x2c/0x48 [ 147.269904] kthread+0x184/0x1a8 [ 147.270322] ret_from_fork+0x14/0x30 [ 147.270805] [ 147.271155] Freed by task 199: [ 147.271629] kasan_set_track+0x3c/0x5c [ 147.272147] kasan_save_free_info+0x30/0x3c [ 147.272708] __kasan_slab_free+0xdc/0x124 [ 147.273434] __kmem_cache_free+0x140/0x2a8 [ 147.274107] kasan_strings+0xbc/0x4ec [ 147.274568] kunit_try_run_case+0x11c/0x2e4 [ 147.275114] kunit_generic_run_threadfn_adapter+0x2c/0x48 [ 147.275958] kthread+0x184/0x1a8 [ 147.276772] ret_from_fork+0x14/0x30 [ 147.277286] [ 147.277552] The buggy address belongs to the object at c8fba200 [ 147.277552] which belongs to the cache kmalloc-64 of size 64 [ 147.278814] The buggy address is located 16 bytes inside of [ 147.278814] freed 64-byte region [c8fba200, c8fba240) [ 147.279963] [ 147.280214] The buggy address belongs to the physical page: [ 147.280820] page:3fba6f39 refcount:1 mapcount:0 mapping:00000000 index:0x0 pfn:0x48fba [ 147.281979] flags: 0x800(slab|zone=0) [ 147.282438] page_type: 0xffffffff() [ 147.282979] raw: 00000800 c4801200 00000122 00000000 00000000 80200020 ffffffff 00000001 [ 147.283840] raw: 00000000 [ 147.284140] page dumped because: kasan: bad access detected [ 147.284874] [ 147.285110] Memory state around the buggy address: [ 147.285985] c8fba100: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 147.286673] c8fba180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 147.287422] >c8fba200: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 147.288218] ^ [ 147.288704] c8fba280: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 147.289426] c8fba300: 00 00 00 00 04 fc fc fc fc fc fc fc fc fc fc fc [ 147.290210] ==================================================================
[ 50.543593] ================================================================== [ 50.544520] BUG: KASAN: slab-use-after-free in strnlen+0x31/0x50 [ 50.545360] Read of size 1 at addr ffff8881028cedd0 by task kunit_try_catch/222 [ 50.546422] [ 50.546767] CPU: 1 PID: 222 Comm: kunit_try_catch Tainted: G B N 6.6.76-rc1 #1 [ 50.547775] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 50.548642] Call Trace: [ 50.549547] <TASK> [ 50.550126] dump_stack_lvl+0x4e/0x90 [ 50.550531] print_report+0xd2/0x660 [ 50.550947] ? __virt_addr_valid+0x156/0x1e0 [ 50.551709] ? kasan_complete_mode_report_info+0x64/0x200 [ 50.552460] kasan_report+0xff/0x140 [ 50.553363] ? strnlen+0x31/0x50 [ 50.553923] ? strnlen+0x31/0x50 [ 50.554614] __asan_load1+0x66/0x70 [ 50.555358] strnlen+0x31/0x50 [ 50.555763] kasan_strings+0x21b/0x510 [ 50.556158] ? __pfx_kasan_strings+0x10/0x10 [ 50.556759] ? __schedule+0x70b/0x1190 [ 50.557355] ? ktime_get_ts64+0x118/0x140 [ 50.558052] kunit_try_run_case+0x126/0x290 [ 50.558758] ? __pfx_kunit_try_run_case+0x10/0x10 [ 50.559352] ? __kasan_check_write+0x18/0x20 [ 50.560067] ? trace_preempt_on+0x20/0xa0 [ 50.560732] ? __kthread_parkme+0x4f/0xd0 [ 50.561314] ? preempt_count_sub+0x50/0x80 [ 50.562043] ? __pfx_kunit_try_run_case+0x10/0x10 [ 50.562539] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 50.563414] kunit_generic_run_threadfn_adapter+0x33/0x50 [ 50.564072] kthread+0x19e/0x1e0 [ 50.564593] ? __pfx_kthread+0x10/0x10 [ 50.565223] ret_from_fork+0x41/0x70 [ 50.565843] ? __pfx_kthread+0x10/0x10 [ 50.566481] ret_from_fork_asm+0x1b/0x30 [ 50.567152] </TASK> [ 50.567403] [ 50.567671] Allocated by task 222: [ 50.568263] kasan_save_stack+0x3c/0x60 [ 50.568905] kasan_set_track+0x29/0x40 [ 50.569488] kasan_save_alloc_info+0x22/0x30 [ 50.570193] __kasan_kmalloc+0xb7/0xc0 [ 50.570771] kmalloc_trace+0x4c/0xb0 [ 50.571319] kasan_strings+0x9f/0x510 [ 50.571921] kunit_try_run_case+0x126/0x290 [ 50.572519] kunit_generic_run_threadfn_adapter+0x33/0x50 [ 50.573326] kthread+0x19e/0x1e0 [ 50.573790] ret_from_fork+0x41/0x70 [ 50.574179] ret_from_fork_asm+0x1b/0x30 [ 50.574844] [ 50.575127] Freed by task 222: [ 50.575545] kasan_save_stack+0x3c/0x60 [ 50.576177] kasan_set_track+0x29/0x40 [ 50.576777] kasan_save_free_info+0x2f/0x50 [ 50.577399] ____kasan_slab_free+0x172/0x1d0 [ 50.577967] __kasan_slab_free+0x16/0x20 [ 50.578602] __kmem_cache_free+0x190/0x310 [ 50.579379] kfree+0x7c/0x120 [ 50.579809] kasan_strings+0xc3/0x510 [ 50.580461] kunit_try_run_case+0x126/0x290 [ 50.581034] kunit_generic_run_threadfn_adapter+0x33/0x50 [ 50.581782] kthread+0x19e/0x1e0 [ 50.582300] ret_from_fork+0x41/0x70 [ 50.582938] ret_from_fork_asm+0x1b/0x30 [ 50.583561] [ 50.583910] The buggy address belongs to the object at ffff8881028cedc0 [ 50.583910] which belongs to the cache kmalloc-32 of size 32 [ 50.584776] The buggy address is located 16 bytes inside of [ 50.584776] freed 32-byte region [ffff8881028cedc0, ffff8881028cede0) [ 50.586113] [ 50.586424] The buggy address belongs to the physical page: [ 50.587066] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1028ce [ 50.588180] flags: 0x200000000000800(slab|node=0|zone=2) [ 50.588900] page_type: 0xffffffff() [ 50.589464] raw: 0200000000000800 ffff888100041500 dead000000000122 0000000000000000 [ 50.590297] raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000 [ 50.591151] page dumped because: kasan: bad access detected [ 50.591595] [ 50.591978] Memory state around the buggy address: [ 50.592608] ffff8881028cec80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 50.593537] ffff8881028ced00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 50.594261] >ffff8881028ced80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 50.595173] ^ [ 50.595794] ffff8881028cee00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 50.596367] ffff8881028cee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 50.597261] ==================================================================