reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706 __slab_free+0x326/0x400 mm/slub.c:4553 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4147 [inline] slab_alloc_node mm/slub.c:4196 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4203 getname_flags+0xb8/0x540 fs/namei.c:146 getname include/linux/fs.h:2903 [inline] do_sys_openat2+0xbc/0x1c0 fs/open.c:1431 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:3433! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 7922 Comm: syz.2.506 Not tainted 6.15.0-rc7-next-20250526-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:filemap_fault+0x117d/0x1200 mm/filemap.c:3433 Code: 38 c1 0f 8c 8e fc ff ff 4c 89 e7 e8 ad 96 2b 00 e9 81 fc ff ff e8 83 1b c8 ff 48 89 df 48 c7 c6 40 2e 94 8b e8 94 af 0f 00 90 <0f> 0b e8 6c 1b c8 ff 48 8b 3c 24 48 c7 c6 c0 34 94 8b e8 7c af 0f RSP: 0018:ffffc90003c6f3c0 EFLAGS: 00010246 RAX: 4c20b1644c170c00 RBX: ffffea0001653880 RCX: 4c20b1644c170c00 RDX: 0000000000000000 RSI: ffffffff8db6ddbc RDI: ffff888028ac9e00 RBP: ffffc90003c6f4f8 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa44 R12: dffffc0000000000 R13: 1ffffd40002ca711 R14: ffffea0001653898 R15: ffffea0001653888 FS: 00007f113ebc76c0(0000) GS:ffff888125d56000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001ebe CR3: 000000002f5fc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_fault+0x138/0x390 mm/memory.c:5187 do_read_fault mm/memory.c:5608 [inline] do_fault mm/memory.c:5742 [inline] do_pte_missing mm/memory.c:4249 [inline] handle_pte_fault mm/memory.c:6087 [inline] __handle_mm_fault+0x37ed/0x5620 mm/memory.c:6230 handle_mm_fault+0x3f6/0x8c0 mm/memory.c:6399 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:rep_movs_alternative+0xf/0x90 arch/x86/lib/copy_user_64.S:46 Code: c4 10 e9 44 f8 03 00 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 83 f9 40 73 44 83 f9 08 73 25 85 c9 74 0f <8a> 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 e9 0d f8 03 00 66 2e RSP: 0018:ffffc90003c6f978 EFLAGS: 00050202 RAX: 00007ffffffff001 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000200000001ebe RDI: ffff888055e58bfe RBP: 000000000000d402 R08: ffff888055e58bfe R09: 1ffff1100abcb17f R10: dffffc0000000000 R11: ffffed100abcb180 R12: 0000000000000000 R13: 0000000000000001 R14: ffff888055e58bfe R15: 0000200000001ebe copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline] _inline_copy_from_user include/linux/uaccess.h:178 [inline] _copy_from_user+0x7a/0xb0 lib/usercopy.c:18 copy_from_user include/linux/uaccess.h:212 [inline] snd_rawmidi_kernel_write1+0x3ab/0x650 sound/core/rawmidi.c:1560 snd_rawmidi_write+0x5ad/0xbd0 sound/core/rawmidi.c:1629 do_loop_readv_writev include/linux/uio.h:-1 [inline] vfs_writev+0x4a5/0x9a0 fs/read_write.c:1059 do_writev+0x14d/0x2d0 fs/read_write.c:1103 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f113dd8e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f113ebc7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f113dfb5fa0 RCX: 00007f113dd8e969 RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000006 RBP: 00007f113de10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f113dfb5fa0 R15: 00007ffe08825d28 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_fault+0x117d/0x1200 mm/filemap.c:3433 Code: 38 c1 0f 8c 8e fc ff ff 4c 89 e7 e8 ad 96 2b 00 e9 81 fc ff ff e8 83 1b c8 ff 48 89 df 48 c7 c6 40 2e 94 8b e8 94 af 0f 00 90 <0f> 0b e8 6c 1b c8 ff 48 8b 3c 24 48 c7 c6 c0 34 94 8b e8 7c af 0f RSP: 0018:ffffc90003c6f3c0 EFLAGS: 00010246 RAX: 4c20b1644c170c00 RBX: ffffea0001653880 RCX: 4c20b1644c170c00 RDX: 0000000000000000 RSI: ffffffff8db6ddbc RDI: ffff888028ac9e00 RBP: ffffc90003c6f4f8 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa44 R12: dffffc0000000000 R13: 1ffffd40002ca711 R14: ffffea0001653898 R15: ffffea0001653888 FS: 00007f113ebc76c0(0000) GS:ffff888125d56000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001ebe CR3: 000000002f5fc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 10 e9 adc %ch,%cl 2: 44 f8 rex.R clc 4: 03 00 add (%rax),%eax 6: cc int3 7: cc int3 8: cc int3 9: cc int3 a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 48 83 f9 40 cmp $0x40,%rcx 1e: 73 44 jae 0x64 20: 83 f9 08 cmp $0x8,%ecx 23: 73 25 jae 0x4a 25: 85 c9 test %ecx,%ecx 27: 74 0f je 0x38 * 29: 8a 06 mov (%rsi),%al <-- trapping instruction 2b: 88 07 mov %al,(%rdi) 2d: 48 ff c7 inc %rdi 30: 48 ff c6 inc %rsi 33: 48 ff c9 dec %rcx 36: 75 f1 jne 0x29 38: e9 0d f8 03 00 jmp 0x3f84a 3d: 66 data16 3e: 2e cs