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Date
June 17, 2025, 3:39 p.m.

Environment
qemu-arm64
qemu-x86_64 

[   91.634096] ==================================================================
[   91.635459] BUG: KASAN: invalid-free in kfree+0x12c/0x138
[   91.636561] Free of addr ffff0000c5fb4001 by task kunit_try_catch/127
[   91.637550] 
[   91.637972] CPU: 0 PID: 127 Comm: kunit_try_catch Tainted: G    B            N 6.6.94-rc1 #1
[   91.639663] Hardware name: linux,dummy-virt (DT)
[   91.640519] Call trace:
[   91.641388]  dump_backtrace+0x9c/0x128
[   91.642092]  show_stack+0x20/0x38
[   91.642644]  dump_stack_lvl+0x60/0xb0
[   91.643562]  print_report+0xf8/0x5e8
[   91.644443]  kasan_report_invalid_free+0xc0/0xe8
[   91.645300]  __kasan_kfree_large+0x54/0xa0
[   91.646280]  free_large_kmalloc+0x5c/0x100
[   91.647168]  kfree+0x12c/0x138
[   91.647992]  kmalloc_pagealloc_invalid_free+0xa8/0x1a8
[   91.649164]  kunit_try_run_case+0x114/0x298
[   91.650151]  kunit_generic_run_threadfn_adapter+0x38/0x60
[   91.653686]  kthread+0x18c/0x1a8
[   91.654261]  ret_from_fork+0x10/0x20
[   91.656665] 
[   91.657887] The buggy address belongs to the physical page:
[   91.660993] page:000000004081e15d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105fb4
[   91.662362] head:000000004081e15d order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   91.663520] flags: 0xbfffc0000000040(head|node=0|zone=2|lastcpupid=0xffff)
[   91.664792] page_type: 0xffffffff()
[   91.665711] raw: 0bfffc0000000040 0000000000000000 dead000000000122 0000000000000000
[   91.666753] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   91.668042] page dumped because: kasan: bad access detected
[   91.669091] 
[   91.669504] Memory state around the buggy address:
[   91.670296]  ffff0000c5fb3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   91.671855]  ffff0000c5fb3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   91.673190] >ffff0000c5fb4000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   91.674223]                    ^
[   91.674907]  ffff0000c5fb4080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   91.676680]  ffff0000c5fb4100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   91.677986] ==================================================================
Metadata Full log Test run details 

[   33.276372] ==================================================================
[   33.277400] BUG: KASAN: invalid-free in kfree+0xfb/0x120
[   33.278260] Free of addr ffff888102070001 by task kunit_try_catch/142
[   33.279113] 
[   33.279365] CPU: 0 PID: 142 Comm: kunit_try_catch Tainted: G    B            N 6.6.94-rc1 #1
[   33.280378] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   33.281042] Call Trace:
[   33.281200]  <TASK>
[   33.281347]  dump_stack_lvl+0x4e/0x90
[   33.281956]  print_report+0xd2/0x650
[   33.282482]  ? __virt_addr_valid+0x156/0x1e0
[   33.283037]  ? kasan_addr_to_slab+0x11/0xb0
[   33.283652]  ? kfree+0xfb/0x120
[   33.284215]  kasan_report_invalid_free+0xfd/0x120
[   33.284821]  ? kfree+0xfb/0x120
[   33.285166]  ? kfree+0xfb/0x120
[   33.285636]  __kasan_kfree_large+0x86/0xd0
[   33.286027]  free_large_kmalloc+0x46/0xd0
[   33.286255]  kfree+0xfb/0x120
[   33.286449]  kmalloc_pagealloc_invalid_free+0xa9/0x1a0
[   33.287291]  ? __pfx_kmalloc_pagealloc_invalid_free+0x10/0x10
[   33.287932]  ? __schedule+0x715/0x11a0
[   33.288154]  ? ktime_get_ts64+0x118/0x140
[   33.288398]  kunit_try_run_case+0x120/0x290
[   33.288650]  ? __pfx_kunit_try_run_case+0x10/0x10
[   33.288922]  ? __kasan_check_write+0x18/0x20
[   33.289427]  ? trace_preempt_on+0x20/0xa0
[   33.290062]  ? __kthread_parkme+0x4f/0xd0
[   33.290880]  ? preempt_count_sub+0x50/0x80
[   33.291310]  ? __pfx_kunit_try_run_case+0x10/0x10
[   33.291843]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   33.292519]  kunit_generic_run_threadfn_adapter+0x33/0x50
[   33.292913]  kthread+0x19e/0x1e0
[   33.293356]  ? __pfx_kthread+0x10/0x10
[   33.293849]  ret_from_fork+0x41/0x70
[   33.294272]  ? __pfx_kthread+0x10/0x10
[   33.294822]  ret_from_fork_asm+0x1b/0x30
[   33.295219]  </TASK>
[   33.295540] 
[   33.295704] The buggy address belongs to the physical page:
[   33.295979] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102070
[   33.296466] head:(____ptrval____) order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   33.297395] flags: 0x200000000000040(head|node=0|zone=2)
[   33.298080] page_type: 0xffffffff()
[   33.298476] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   33.299387] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   33.300339] page dumped because: kasan: bad access detected
[   33.300737] 
[   33.300974] Memory state around the buggy address:
[   33.301499]  ffff88810206ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   33.302135]  ffff88810206ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   33.303006] >ffff888102070000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   33.303857]                    ^
[   33.304041]  ffff888102070080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   33.304357]  ffff888102070100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   33.305385] ==================================================================
Metadata Full log Test run details