Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.643199] ================================================================== [ 21.644703] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x17c/0x328 [ 21.645487] Write of size 33 at addr fff00000c41e2a00 by task kunit_try_catch/174 [ 21.646280] [ 21.646637] CPU: 0 UID: 0 PID: 174 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 21.646863] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.646939] Hardware name: linux,dummy-virt (DT) [ 21.647042] Call trace: [ 21.647112] dump_backtrace+0x9c/0x128 [ 21.647230] show_stack+0x20/0x38 [ 21.647334] dump_stack_lvl+0x8c/0xd0 [ 21.647516] print_report+0x118/0x5f0 [ 21.647656] kasan_report+0xdc/0x128 [ 21.647766] kasan_check_range+0x100/0x1a8 [ 21.647820] __asan_memset+0x34/0x78 [ 21.647866] kmalloc_uaf_memset+0x17c/0x328 [ 21.647917] kunit_try_run_case+0x170/0x3f0 [ 21.647990] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.648052] kthread+0x24c/0x2d0 [ 21.648099] ret_from_fork+0x10/0x20 [ 21.648147] [ 21.656517] Allocated by task 174: [ 21.657417] kasan_save_stack+0x3c/0x68 [ 21.658000] kasan_save_track+0x20/0x40 [ 21.658468] kasan_save_alloc_info+0x40/0x58 [ 21.659259] __kasan_kmalloc+0xd4/0xd8 [ 21.659769] __kmalloc_cache_noprof+0x154/0x320 [ 21.660380] kmalloc_uaf_memset+0xb8/0x328 [ 21.661374] kunit_try_run_case+0x170/0x3f0 [ 21.661872] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.662513] kthread+0x24c/0x2d0 [ 21.663007] ret_from_fork+0x10/0x20 [ 21.663472] [ 21.664229] Freed by task 174: [ 21.664665] kasan_save_stack+0x3c/0x68 [ 21.665202] kasan_save_track+0x20/0x40 [ 21.665686] kasan_save_free_info+0x4c/0x78 [ 21.666196] __kasan_slab_free+0x6c/0x98 [ 21.666773] kfree+0x110/0x3b8 [ 21.667242] kmalloc_uaf_memset+0x120/0x328 [ 21.667917] kunit_try_run_case+0x170/0x3f0 [ 21.668458] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.669135] kthread+0x24c/0x2d0 [ 21.669623] ret_from_fork+0x10/0x20 [ 21.670639] [ 21.670948] The buggy address belongs to the object at fff00000c41e2a00 [ 21.670948] which belongs to the cache kmalloc-64 of size 64 [ 21.672336] The buggy address is located 0 bytes inside of [ 21.672336] freed 64-byte region [fff00000c41e2a00, fff00000c41e2a40) [ 21.673611] [ 21.673894] The buggy address belongs to the physical page: [ 21.674553] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1041e2 [ 21.675588] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.676392] page_type: f5(slab) [ 21.676832] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 21.677587] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 21.678546] page dumped because: kasan: bad access detected [ 21.679274] [ 21.679938] Memory state around the buggy address: [ 21.680561] fff00000c41e2900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 21.681399] fff00000c41e2980: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.682235] >fff00000c41e2a00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.683043] ^ [ 21.683805] fff00000c41e2a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.684628] fff00000c41e2b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.685428] ==================================================================
[ 18.041839] ================================================================== [ 18.043178] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 18.044144] Write of size 33 at addr ffff88810230b880 by task kunit_try_catch/191 [ 18.045453] [ 18.045725] CPU: 1 UID: 0 PID: 191 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 18.045787] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.045804] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.045856] Call Trace: [ 18.045899] <TASK> [ 18.045949] dump_stack_lvl+0x73/0xb0 [ 18.046346] print_report+0xd1/0x640 [ 18.046415] ? __virt_addr_valid+0x1db/0x2d0 [ 18.046474] ? kmalloc_uaf_memset+0x1a4/0x360 [ 18.046550] ? kasan_complete_mode_report_info+0x64/0x200 [ 18.046623] ? kmalloc_uaf_memset+0x1a4/0x360 [ 18.046691] kasan_report+0x140/0x180 [ 18.046764] ? kmalloc_uaf_memset+0x1a4/0x360 [ 18.046850] kasan_check_range+0x10c/0x1c0 [ 18.046897] __asan_memset+0x27/0x50 [ 18.046927] kmalloc_uaf_memset+0x1a4/0x360 [ 18.046960] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 18.046994] ? __schedule+0xc49/0x27a0 [ 18.047025] ? __pfx_read_tsc+0x10/0x10 [ 18.047052] ? ktime_get_ts64+0x84/0x230 [ 18.047089] kunit_try_run_case+0x1a6/0x480 [ 18.047121] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.047149] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 18.047177] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.047211] ? __kthread_parkme+0x82/0x160 [ 18.047279] ? preempt_count_sub+0x50/0x80 [ 18.047312] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.047340] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.047375] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.047412] kthread+0x257/0x310 [ 18.047439] ? __pfx_kthread+0x10/0x10 [ 18.047544] ret_from_fork+0x41/0x80 [ 18.047589] ? __pfx_kthread+0x10/0x10 [ 18.047616] ret_from_fork_asm+0x1a/0x30 [ 18.047658] </TASK> [ 18.047672] [ 18.068247] Allocated by task 191: [ 18.069362] kasan_save_stack+0x45/0x70 [ 18.069671] kasan_save_track+0x18/0x40 [ 18.070148] kasan_save_alloc_info+0x3b/0x50 [ 18.070784] __kasan_kmalloc+0xb7/0xc0 [ 18.071366] __kmalloc_cache_noprof+0x168/0x350 [ 18.072366] kmalloc_uaf_memset+0xaa/0x360 [ 18.073018] kunit_try_run_case+0x1a6/0x480 [ 18.073361] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.073852] kthread+0x257/0x310 [ 18.074602] ret_from_fork+0x41/0x80 [ 18.075324] ret_from_fork_asm+0x1a/0x30 [ 18.076192] [ 18.076392] Freed by task 191: [ 18.076624] kasan_save_stack+0x45/0x70 [ 18.077753] kasan_save_track+0x18/0x40 [ 18.078281] kasan_save_free_info+0x3f/0x60 [ 18.079155] __kasan_slab_free+0x56/0x70 [ 18.079503] kfree+0x123/0x3d0 [ 18.080049] kmalloc_uaf_memset+0x12c/0x360 [ 18.080364] kunit_try_run_case+0x1a6/0x480 [ 18.080794] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.081773] kthread+0x257/0x310 [ 18.082027] ret_from_fork+0x41/0x80 [ 18.082595] ret_from_fork_asm+0x1a/0x30 [ 18.083357] [ 18.083711] The buggy address belongs to the object at ffff88810230b880 [ 18.083711] which belongs to the cache kmalloc-64 of size 64 [ 18.085321] The buggy address is located 0 bytes inside of [ 18.085321] freed 64-byte region [ffff88810230b880, ffff88810230b8c0) [ 18.086704] [ 18.087313] The buggy address belongs to the physical page: [ 18.087918] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10230b [ 18.088490] flags: 0x200000000000000(node=0|zone=2) [ 18.089412] page_type: f5(slab) [ 18.089720] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 18.090420] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 18.092163] page dumped because: kasan: bad access detected [ 18.092737] [ 18.093287] Memory state around the buggy address: [ 18.094105] ffff88810230b780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.094787] ffff88810230b800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.095854] >ffff88810230b880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.096393] ^ [ 18.097171] ffff88810230b900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.098094] ffff88810230b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.098902] ==================================================================