Date
July 2, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.164890] ================================================================== [ 33.164987] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 33.165046] Read of size 1 at addr fff00000c993b210 by task kunit_try_catch/292 [ 33.165126] [ 33.165169] CPU: 1 UID: 0 PID: 292 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT [ 33.165282] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.165329] Hardware name: linux,dummy-virt (DT) [ 33.165381] Call trace: [ 33.165408] show_stack+0x20/0x38 (C) [ 33.165462] dump_stack_lvl+0x8c/0xd0 [ 33.165533] print_report+0x118/0x608 [ 33.165601] kasan_report+0xdc/0x128 [ 33.165650] __asan_report_load1_noabort+0x20/0x30 [ 33.165701] strcmp+0xc0/0xc8 [ 33.165762] kasan_strings+0x340/0xb00 [ 33.165826] kunit_try_run_case+0x170/0x3f0 [ 33.165881] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.165948] kthread+0x328/0x630 [ 33.166038] ret_from_fork+0x10/0x20 [ 33.166235] [ 33.166258] Allocated by task 292: [ 33.166311] kasan_save_stack+0x3c/0x68 [ 33.166356] kasan_save_track+0x20/0x40 [ 33.166414] kasan_save_alloc_info+0x40/0x58 [ 33.166456] __kasan_kmalloc+0xd4/0xd8 [ 33.166496] __kmalloc_cache_noprof+0x16c/0x3c0 [ 33.166539] kasan_strings+0xc8/0xb00 [ 33.166576] kunit_try_run_case+0x170/0x3f0 [ 33.166618] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.166674] kthread+0x328/0x630 [ 33.166709] ret_from_fork+0x10/0x20 [ 33.166750] [ 33.166779] Freed by task 292: [ 33.166809] kasan_save_stack+0x3c/0x68 [ 33.166850] kasan_save_track+0x20/0x40 [ 33.166898] kasan_save_free_info+0x4c/0x78 [ 33.166951] __kasan_slab_free+0x6c/0x98 [ 33.166993] kfree+0x214/0x3c8 [ 33.167030] kasan_strings+0x24c/0xb00 [ 33.167068] kunit_try_run_case+0x170/0x3f0 [ 33.167109] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.167166] kthread+0x328/0x630 [ 33.167214] ret_from_fork+0x10/0x20 [ 33.167253] [ 33.167274] The buggy address belongs to the object at fff00000c993b200 [ 33.167274] which belongs to the cache kmalloc-32 of size 32 [ 33.167335] The buggy address is located 16 bytes inside of [ 33.167335] freed 32-byte region [fff00000c993b200, fff00000c993b220) [ 33.167398] [ 33.167422] The buggy address belongs to the physical page: [ 33.167457] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10993b [ 33.167512] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.167564] page_type: f5(slab) [ 33.167609] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.167664] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.167708] page dumped because: kasan: bad access detected [ 33.167743] [ 33.167765] Memory state around the buggy address: [ 33.167850] fff00000c993b100: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.168189] fff00000c993b180: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.168253] >fff00000c993b200: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.168296] ^ [ 33.168348] fff00000c993b280: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.168420] fff00000c993b300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.168523] ==================================================================
[ 25.260021] ================================================================== [ 25.261030] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 25.261453] Read of size 1 at addr ffff888105a1be50 by task kunit_try_catch/308 [ 25.261803] [ 25.261915] CPU: 0 UID: 0 PID: 308 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) [ 25.261973] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.261987] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.262012] Call Trace: [ 25.262029] <TASK> [ 25.262051] dump_stack_lvl+0x73/0xb0 [ 25.262132] print_report+0xd1/0x650 [ 25.262159] ? __virt_addr_valid+0x1db/0x2d0 [ 25.262186] ? strcmp+0xb0/0xc0 [ 25.262256] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.262285] ? strcmp+0xb0/0xc0 [ 25.262306] kasan_report+0x141/0x180 [ 25.262328] ? strcmp+0xb0/0xc0 [ 25.262376] __asan_report_load1_noabort+0x18/0x20 [ 25.262402] strcmp+0xb0/0xc0 [ 25.262425] kasan_strings+0x431/0xe80 [ 25.262446] ? trace_hardirqs_on+0x37/0xe0 [ 25.262471] ? __pfx_kasan_strings+0x10/0x10 [ 25.262490] ? finish_task_switch.isra.0+0x153/0x700 [ 25.262514] ? __switch_to+0x47/0xf50 [ 25.262540] ? __schedule+0x10cc/0x2b60 [ 25.262562] ? __pfx_read_tsc+0x10/0x10 [ 25.262584] ? ktime_get_ts64+0x86/0x230 [ 25.262608] kunit_try_run_case+0x1a5/0x480 [ 25.262636] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.262660] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.262681] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.262719] ? __kthread_parkme+0x82/0x180 [ 25.262741] ? preempt_count_sub+0x50/0x80 [ 25.262764] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.262790] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.262815] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.262840] kthread+0x337/0x6f0 [ 25.262860] ? trace_preempt_on+0x20/0xc0 [ 25.262898] ? __pfx_kthread+0x10/0x10 [ 25.262918] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.262943] ? calculate_sigpending+0x7b/0xa0 [ 25.262967] ? __pfx_kthread+0x10/0x10 [ 25.262989] ret_from_fork+0x116/0x1d0 [ 25.263007] ? __pfx_kthread+0x10/0x10 [ 25.263028] ret_from_fork_asm+0x1a/0x30 [ 25.263070] </TASK> [ 25.263084] [ 25.271015] Allocated by task 308: [ 25.271350] kasan_save_stack+0x45/0x70 [ 25.271515] kasan_save_track+0x18/0x40 [ 25.271912] kasan_save_alloc_info+0x3b/0x50 [ 25.272147] __kasan_kmalloc+0xb7/0xc0 [ 25.272317] __kmalloc_cache_noprof+0x189/0x420 [ 25.272468] kasan_strings+0xc0/0xe80 [ 25.272602] kunit_try_run_case+0x1a5/0x480 [ 25.272940] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.273234] kthread+0x337/0x6f0 [ 25.273399] ret_from_fork+0x116/0x1d0 [ 25.273525] ret_from_fork_asm+0x1a/0x30 [ 25.273659] [ 25.273806] Freed by task 308: [ 25.274018] kasan_save_stack+0x45/0x70 [ 25.274283] kasan_save_track+0x18/0x40 [ 25.274496] kasan_save_free_info+0x3f/0x60 [ 25.274704] __kasan_slab_free+0x56/0x70 [ 25.274853] kfree+0x222/0x3f0 [ 25.275052] kasan_strings+0x2aa/0xe80 [ 25.275334] kunit_try_run_case+0x1a5/0x480 [ 25.275522] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.275691] kthread+0x337/0x6f0 [ 25.275804] ret_from_fork+0x116/0x1d0 [ 25.275928] ret_from_fork_asm+0x1a/0x30 [ 25.276120] [ 25.276227] The buggy address belongs to the object at ffff888105a1be40 [ 25.276227] which belongs to the cache kmalloc-32 of size 32 [ 25.277041] The buggy address is located 16 bytes inside of [ 25.277041] freed 32-byte region [ffff888105a1be40, ffff888105a1be60) [ 25.277691] [ 25.277767] The buggy address belongs to the physical page: [ 25.277951] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a1b [ 25.278319] flags: 0x200000000000000(node=0|zone=2) [ 25.278744] page_type: f5(slab) [ 25.278995] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 25.279247] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 25.279585] page dumped because: kasan: bad access detected [ 25.279795] [ 25.280106] Memory state around the buggy address: [ 25.280325] ffff888105a1bd00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.280554] ffff888105a1bd80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 25.280840] >ffff888105a1be00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.281147] ^ [ 25.281391] ffff888105a1be80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.281679] ffff888105a1bf00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.281967] ==================================================================
[ 25.015906] ================================================================== [ 25.017674] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 25.018000] Read of size 1 at addr ffff8881057feed0 by task kunit_try_catch/307 [ 25.018727] [ 25.018913] CPU: 1 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) [ 25.018964] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.018977] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.018999] Call Trace: [ 25.019011] <TASK> [ 25.019026] dump_stack_lvl+0x73/0xb0 [ 25.019055] print_report+0xd1/0x650 [ 25.019077] ? __virt_addr_valid+0x1db/0x2d0 [ 25.019100] ? strcmp+0xb0/0xc0 [ 25.019120] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.019147] ? strcmp+0xb0/0xc0 [ 25.019167] kasan_report+0x141/0x180 [ 25.019189] ? strcmp+0xb0/0xc0 [ 25.019213] __asan_report_load1_noabort+0x18/0x20 [ 25.019237] strcmp+0xb0/0xc0 [ 25.019270] kasan_strings+0x431/0xe80 [ 25.019290] ? trace_hardirqs_on+0x37/0xe0 [ 25.019331] ? __pfx_kasan_strings+0x10/0x10 [ 25.019352] ? finish_task_switch.isra.0+0x153/0x700 [ 25.019375] ? __switch_to+0x47/0xf50 [ 25.019401] ? __schedule+0x10cc/0x2b60 [ 25.019423] ? __pfx_read_tsc+0x10/0x10 [ 25.019445] ? ktime_get_ts64+0x86/0x230 [ 25.019470] kunit_try_run_case+0x1a5/0x480 [ 25.019515] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.019538] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.019560] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.019582] ? __kthread_parkme+0x82/0x180 [ 25.019602] ? preempt_count_sub+0x50/0x80 [ 25.019625] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.019651] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.019674] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.019699] kthread+0x337/0x6f0 [ 25.019718] ? trace_preempt_on+0x20/0xc0 [ 25.019739] ? __pfx_kthread+0x10/0x10 [ 25.019760] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.019784] ? calculate_sigpending+0x7b/0xa0 [ 25.019807] ? __pfx_kthread+0x10/0x10 [ 25.019828] ret_from_fork+0x116/0x1d0 [ 25.019847] ? __pfx_kthread+0x10/0x10 [ 25.019867] ret_from_fork_asm+0x1a/0x30 [ 25.019897] </TASK> [ 25.019909] [ 25.030524] Allocated by task 307: [ 25.030760] kasan_save_stack+0x45/0x70 [ 25.030965] kasan_save_track+0x18/0x40 [ 25.031156] kasan_save_alloc_info+0x3b/0x50 [ 25.031385] __kasan_kmalloc+0xb7/0xc0 [ 25.031589] __kmalloc_cache_noprof+0x189/0x420 [ 25.032011] kasan_strings+0xc0/0xe80 [ 25.032154] kunit_try_run_case+0x1a5/0x480 [ 25.032331] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.032654] kthread+0x337/0x6f0 [ 25.032917] ret_from_fork+0x116/0x1d0 [ 25.033098] ret_from_fork_asm+0x1a/0x30 [ 25.033291] [ 25.033398] Freed by task 307: [ 25.033587] kasan_save_stack+0x45/0x70 [ 25.033757] kasan_save_track+0x18/0x40 [ 25.033886] kasan_save_free_info+0x3f/0x60 [ 25.034025] __kasan_slab_free+0x56/0x70 [ 25.034214] kfree+0x222/0x3f0 [ 25.034493] kasan_strings+0x2aa/0xe80 [ 25.034754] kunit_try_run_case+0x1a5/0x480 [ 25.034974] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.035223] kthread+0x337/0x6f0 [ 25.035406] ret_from_fork+0x116/0x1d0 [ 25.035570] ret_from_fork_asm+0x1a/0x30 [ 25.035827] [ 25.035922] The buggy address belongs to the object at ffff8881057feec0 [ 25.035922] which belongs to the cache kmalloc-32 of size 32 [ 25.036427] The buggy address is located 16 bytes inside of [ 25.036427] freed 32-byte region [ffff8881057feec0, ffff8881057feee0) [ 25.037135] [ 25.037254] The buggy address belongs to the physical page: [ 25.037509] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1057fe [ 25.037951] flags: 0x200000000000000(node=0|zone=2) [ 25.038188] page_type: f5(slab) [ 25.038362] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 25.038639] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 25.038919] page dumped because: kasan: bad access detected [ 25.039153] [ 25.039254] Memory state around the buggy address: [ 25.039506] ffff8881057fed80: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 25.039816] ffff8881057fee00: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc [ 25.040121] >ffff8881057fee80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.040443] ^ [ 25.040649] ffff8881057fef00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.041046] ffff8881057fef80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.041388] ==================================================================