discard_slab mm/slub.c:2717 [inline] __put_partials+0x161/0x1c0 mm/slub.c:3186 put_cpu_partial+0x17c/0x250 mm/slub.c:3261 __slab_free+0x2f7/0x400 mm/slub.c:4513 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:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4204 audit_buffer_alloc kernel/audit.c:1791 [inline] audit_log_start+0x126/0x870 kernel/audit.c:1913 audit_seccomp+0x64/0x190 kernel/auditsc.c:3001 seccomp_log kernel/seccomp.c:1033 [inline] __seccomp_filter+0x9aa/0x1a40 kernel/seccomp.c:1328 syscall_trace_enter+0xaa/0x160 kernel/entry/common.c:52 syscall_enter_from_user_mode_work include/linux/entry-common.h:170 [inline] syscall_enter_from_user_mode include/linux/entry-common.h:200 [inline] do_syscall_64+0xd3/0x3b0 arch/x86/entry/syscall_64.c:90 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:3442! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 16125 Comm: syz.5.3320 Not tainted 6.16.0-rc4-syzkaller-00123-g4c06e63b9203 #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:3442 Code: 38 c1 0f 8c 8e fc ff ff 4c 89 e7 e8 8d 6b 29 00 e9 81 fc ff ff e8 a3 13 c8 ff 48 89 df 48 c7 c6 20 33 94 8b e8 d4 ae 0d 00 90 <0f> 0b e8 8c 13 c8 ff 48 8b 3c 24 48 c7 c6 a0 39 94 8b e8 bc ae 0d RSP: 0018:ffffc9000d9573c0 EFLAGS: 00010246 RAX: fb3e9be4c460a100 RBX: ffffea00017cb880 RCX: fb3e9be4c460a100 RDX: 0000000000000000 RSI: ffffffff8db6feb2 RDI: ffff88802f8b0000 RBP: ffffc9000d9574f8 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfa9fc R12: dffffc0000000000 R13: 1ffffd40002f9711 R14: ffffea00017cb898 R15: ffffea00017cb888 FS: 00007f7a4cba86c0(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001a87 CR3: 0000000034a32000 CR4: 00000000003526f0 Call Trace: __do_fault+0x135/0x390 mm/memory.c:5169 do_read_fault mm/memory.c:5590 [inline] do_fault mm/memory.c:5724 [inline] do_pte_missing mm/memory.c:4251 [inline] handle_pte_fault mm/memory.c:6069 [inline] __handle_mm_fault+0x37ed/0x5620 mm/memory.c:6212 handle_mm_fault+0x2d5/0x7f0 mm/memory.c:6381 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 c3 cc cc cc cc 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 3d 00 04 00 66 2e RSP: 0018:ffffc9000d957978 EFLAGS: 00050202 RAX: 00007ffffffff001 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000200000001a87 RDI: ffff888053c607c7 RBP: 000000000000d839 R08: ffff888053c607c7 R09: 1ffff1100a78c0f8 R10: dffffc0000000000 R11: ffffed100a78c0f9 R12: 0000000000000000 R13: 0000000000000001 R14: ffff888053c607c7 R15: 0000200000001a87 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 fs/read_write.c:850 [inline] vfs_writev+0x4b6/0x960 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: 0033:0x7f7a4bd8e929 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:00007f7a4cba8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f7a4bfb5fa0 RCX: 00007f7a4bd8e929 RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000005 RBP: 00007f7a4be10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f7a4bfb5fa0 R15: 00007ffe75ba58b8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_fault+0x117d/0x1200 mm/filemap.c:3442 Code: 38 c1 0f 8c 8e fc ff ff 4c 89 e7 e8 8d 6b 29 00 e9 81 fc ff ff e8 a3 13 c8 ff 48 89 df 48 c7 c6 20 33 94 8b e8 d4 ae 0d 00 90 <0f> 0b e8 8c 13 c8 ff 48 8b 3c 24 48 c7 c6 a0 39 94 8b e8 bc ae 0d RSP: 0018:ffffc9000d9573c0 EFLAGS: 00010246 RAX: fb3e9be4c460a100 RBX: ffffea00017cb880 RCX: fb3e9be4c460a100 RDX: 0000000000000000 RSI: ffffffff8db6feb2 RDI: ffff88802f8b0000 RBP: ffffc9000d9574f8 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfa9fc R12: dffffc0000000000 R13: 1ffffd40002f9711 R14: ffffea00017cb898 R15: ffffea00017cb888 FS: 00007f7a4cba86c0(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001a87 CR3: 0000000034a32000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 10 c3 adc %al,%bl 2: cc int3 3: cc int3 4: cc int3 5: cc int3 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 3d 00 04 00 jmp 0x4007a 3d: 66 data16 3e: 2e cs