Date
July 8, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.346840] ================================================================== [ 19.347091] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x3bc/0x438 [ 19.347204] Read of size 16 at addr fff00000c58c2b20 by task kunit_try_catch/168 [ 19.347260] [ 19.347297] CPU: 1 UID: 0 PID: 168 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.347383] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.347408] Hardware name: linux,dummy-virt (DT) [ 19.347670] Call trace: [ 19.347793] show_stack+0x20/0x38 (C) [ 19.347963] dump_stack_lvl+0x8c/0xd0 [ 19.348068] print_report+0x118/0x608 [ 19.348117] kasan_report+0xdc/0x128 [ 19.348450] __asan_report_load16_noabort+0x20/0x30 [ 19.348811] kmalloc_uaf_16+0x3bc/0x438 [ 19.348935] kunit_try_run_case+0x170/0x3f0 [ 19.349179] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.349380] kthread+0x328/0x630 [ 19.349518] ret_from_fork+0x10/0x20 [ 19.349654] [ 19.349779] Allocated by task 168: [ 19.349919] kasan_save_stack+0x3c/0x68 [ 19.349977] kasan_save_track+0x20/0x40 [ 19.350023] kasan_save_alloc_info+0x40/0x58 [ 19.350099] __kasan_kmalloc+0xd4/0xd8 [ 19.350273] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.350456] kmalloc_uaf_16+0x140/0x438 [ 19.350531] kunit_try_run_case+0x170/0x3f0 [ 19.350744] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.350896] kthread+0x328/0x630 [ 19.350931] ret_from_fork+0x10/0x20 [ 19.350977] [ 19.351324] Freed by task 168: [ 19.351424] kasan_save_stack+0x3c/0x68 [ 19.351677] kasan_save_track+0x20/0x40 [ 19.351762] kasan_save_free_info+0x4c/0x78 [ 19.351852] __kasan_slab_free+0x6c/0x98 [ 19.351890] kfree+0x214/0x3c8 [ 19.351923] kmalloc_uaf_16+0x190/0x438 [ 19.351957] kunit_try_run_case+0x170/0x3f0 [ 19.352365] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.352756] kthread+0x328/0x630 [ 19.352866] ret_from_fork+0x10/0x20 [ 19.352964] [ 19.353048] The buggy address belongs to the object at fff00000c58c2b20 [ 19.353048] which belongs to the cache kmalloc-16 of size 16 [ 19.353182] The buggy address is located 0 bytes inside of [ 19.353182] freed 16-byte region [fff00000c58c2b20, fff00000c58c2b30) [ 19.353423] [ 19.353730] The buggy address belongs to the physical page: [ 19.353836] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058c2 [ 19.354079] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.354188] page_type: f5(slab) [ 19.354303] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 19.354541] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.354712] page dumped because: kasan: bad access detected [ 19.354759] [ 19.354807] Memory state around the buggy address: [ 19.354907] fff00000c58c2a00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.355063] fff00000c58c2a80: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.355224] >fff00000c58c2b00: 00 00 fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 19.355291] ^ [ 19.355570] fff00000c58c2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.355768] fff00000c58c2c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.356210] ==================================================================
[ 12.512336] ================================================================== [ 12.512883] BUG: KASAN: slab-use-after-free in kmalloc_uaf_16+0x47b/0x4c0 [ 12.513324] Read of size 16 at addr ffff88810233af60 by task kunit_try_catch/186 [ 12.513648] [ 12.513797] CPU: 0 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.513842] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.513853] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.513875] Call Trace: [ 12.513888] <TASK> [ 12.513917] dump_stack_lvl+0x73/0xb0 [ 12.513950] print_report+0xd1/0x650 [ 12.513985] ? __virt_addr_valid+0x1db/0x2d0 [ 12.514073] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.514105] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.514128] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.514149] kasan_report+0x141/0x180 [ 12.514182] ? kmalloc_uaf_16+0x47b/0x4c0 [ 12.514207] __asan_report_load16_noabort+0x18/0x20 [ 12.514232] kmalloc_uaf_16+0x47b/0x4c0 [ 12.514253] ? __pfx_kmalloc_uaf_16+0x10/0x10 [ 12.514274] ? __schedule+0x10cc/0x2b60 [ 12.514297] ? __pfx_read_tsc+0x10/0x10 [ 12.514319] ? ktime_get_ts64+0x86/0x230 [ 12.514346] kunit_try_run_case+0x1a5/0x480 [ 12.514372] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.514394] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.514419] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.514442] ? __kthread_parkme+0x82/0x180 [ 12.514463] ? preempt_count_sub+0x50/0x80 [ 12.514489] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.514513] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.514544] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.514568] kthread+0x337/0x6f0 [ 12.514587] ? trace_preempt_on+0x20/0xc0 [ 12.514628] ? __pfx_kthread+0x10/0x10 [ 12.514648] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.514669] ? calculate_sigpending+0x7b/0xa0 [ 12.514693] ? __pfx_kthread+0x10/0x10 [ 12.514714] ret_from_fork+0x116/0x1d0 [ 12.514732] ? __pfx_kthread+0x10/0x10 [ 12.514751] ret_from_fork_asm+0x1a/0x30 [ 12.514783] </TASK> [ 12.514794] [ 12.522347] Allocated by task 186: [ 12.522476] kasan_save_stack+0x45/0x70 [ 12.522795] kasan_save_track+0x18/0x40 [ 12.523199] kasan_save_alloc_info+0x3b/0x50 [ 12.523469] __kasan_kmalloc+0xb7/0xc0 [ 12.523707] __kmalloc_cache_noprof+0x189/0x420 [ 12.523917] kmalloc_uaf_16+0x15b/0x4c0 [ 12.524197] kunit_try_run_case+0x1a5/0x480 [ 12.524348] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.524767] kthread+0x337/0x6f0 [ 12.525018] ret_from_fork+0x116/0x1d0 [ 12.525180] ret_from_fork_asm+0x1a/0x30 [ 12.525350] [ 12.525469] Freed by task 186: [ 12.525636] kasan_save_stack+0x45/0x70 [ 12.525856] kasan_save_track+0x18/0x40 [ 12.526098] kasan_save_free_info+0x3f/0x60 [ 12.526249] __kasan_slab_free+0x56/0x70 [ 12.526384] kfree+0x222/0x3f0 [ 12.526502] kmalloc_uaf_16+0x1d6/0x4c0 [ 12.526724] kunit_try_run_case+0x1a5/0x480 [ 12.526932] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.527184] kthread+0x337/0x6f0 [ 12.527675] ret_from_fork+0x116/0x1d0 [ 12.527884] ret_from_fork_asm+0x1a/0x30 [ 12.528204] [ 12.528279] The buggy address belongs to the object at ffff88810233af60 [ 12.528279] which belongs to the cache kmalloc-16 of size 16 [ 12.529016] The buggy address is located 0 bytes inside of [ 12.529016] freed 16-byte region [ffff88810233af60, ffff88810233af70) [ 12.529629] [ 12.529712] The buggy address belongs to the physical page: [ 12.529886] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10233a [ 12.530484] flags: 0x200000000000000(node=0|zone=2) [ 12.530745] page_type: f5(slab) [ 12.530907] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.531380] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.531690] page dumped because: kasan: bad access detected [ 12.531911] [ 12.532062] Memory state around the buggy address: [ 12.532287] ffff88810233ae00: 00 05 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 12.532675] ffff88810233ae80: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.532969] >ffff88810233af00: 00 05 fc fc fa fb fc fc 00 00 fc fc fa fb fc fc [ 12.533249] ^ [ 12.533580] ffff88810233af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.533889] ffff88810233b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.534300] ==================================================================