faultin_page mm/gup.c:1193 [inline] __get_user_pages+0x771/0x36f0 mm/gup.c:1491 populate_vma_page_range+0x278/0x3a0 mm/gup.c:1929 __mm_populate+0x1d8/0x380 mm/gup.c:2032 page_owner free stack trace missing ------------[ cut here ]------------ kernel BUG at mm/filemap.c:3432! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 2 UID: 0 PID: 6467 Comm: syz.2.66 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:filemap_fault+0x1862/0x2740 mm/filemap.c:3432 Code: 00 e9 bf ec ff ff 48 8b 7c 24 28 e8 38 41 2d 00 e9 66 f3 ff ff e8 be c4 c8 ff 48 c7 c6 00 e8 98 8b 48 89 df e8 bf 90 10 00 90 <0f> 0b e8 a7 c4 c8 ff 48 c7 c6 60 de 98 8b 48 89 df e8 a8 90 10 00 RSP: 0018:ffffc900073975b0 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffffea0001c40c00 RCX: ffffc9000c001000 RDX: 0000000000080000 RSI: ffffffff81f27811 RDI: ffff888022184cc4 RBP: ffffc90007397880 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90867f17 R11: 0000000000000000 R12: ffff8880462013f8 R13: 0000000000000008 R14: 000000000000000e R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880979b9000(0063) knlGS:00000000f5036b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000055eb344448e8 CR3: 0000000070258000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_fault+0x10a/0x490 mm/memory.c:5098 do_read_fault mm/memory.c:5518 [inline] do_fault mm/memory.c:5652 [inline] do_pte_missing+0x1031/0x3fb0 mm/memory.c:4160 handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140 handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309 do_user_addr_fault+0x7a6/0x1370 arch/x86/mm/fault.c:1388 handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] RIP: 0010:raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline] RIP: 0010:_inline_copy_from_user include/linux/uaccess.h:178 [inline] RIP: 0010:_copy_from_user+0x93/0xd0 lib/usercopy.c:18 Code: ce ed fc 89 ee 4c 89 ef 48 b8 00 f0 ff ff ff 7f 00 00 48 39 c3 48 0f 47 d8 e8 49 52 52 fd 0f 01 cb 4c 89 ef 48 89 de 48 89 e9 a4 0f 1f 00 49 89 cc 48 89 cb 0f 01 ca 31 ff 48 89 ce e8 45 c9 RSP: 0018:ffffc90007397b18 EFLAGS: 00050246 RAX: 0000000000000001 RBX: 000000008095e000 RCX: 0000000000001000 RDX: 0000000000000000 RSI: 000000008095e000 RDI: ffff888025f7c000 RBP: 0000000000001000 R08: 0000000000000001 R09: ffffed1004bef9ff R10: ffff888025f7cfff R11: 0000000000000000 R12: 0000000000000000 R13: ffff888025f7c000 R14: dffffc0000000000 R15: 000000008095e000 copy_from_user include/linux/uaccess.h:212 [inline] snd_rawmidi_kernel_write1+0x50a/0x8a0 sound/core/rawmidi.c:1560 snd_rawmidi_write+0x26e/0xc10 sound/core/rawmidi.c:1629 vfs_write+0x25c/0x1180 fs/read_write.c:682 ksys_write+0x205/0x240 fs/read_write.c:736 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf73ae579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f503655c EFLAGS: 00000296 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000080000000 RDX: 00000000fffffd2c RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_fault+0x1862/0x2740 mm/filemap.c:3432 Code: 00 e9 bf ec ff ff 48 8b 7c 24 28 e8 38 41 2d 00 e9 66 f3 ff ff e8 be c4 c8 ff 48 c7 c6 00 e8 98 8b 48 89 df e8 bf 90 10 00 90 <0f> 0b e8 a7 c4 c8 ff 48 c7 c6 60 de 98 8b 48 89 df e8 a8 90 10 00 RSP: 0018:ffffc900073975b0 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffffea0001c40c00 RCX: ffffc9000c001000 RDX: 0000000000080000 RSI: ffffffff81f27811 RDI: ffff888022184cc4 RBP: ffffc90007397880 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90867f17 R11: 0000000000000000 R12: ffff8880462013f8 R13: 0000000000000008 R14: 000000000000000e R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880979b9000(0063) knlGS:00000000f5036b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000055eb344448e8 CR3: 0000000070258000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ed in (%dx),%eax 1: fc cld 2: 89 ee mov %ebp,%esi 4: 4c 89 ef mov %r13,%rdi 7: 48 b8 00 f0 ff ff ff movabs $0x7ffffffff000,%rax e: 7f 00 00 11: 48 39 c3 cmp %rax,%rbx 14: 48 0f 47 d8 cmova %rax,%rbx 18: e8 49 52 52 fd call 0xfd525266 1d: 0f 01 cb stac 20: 4c 89 ef mov %r13,%rdi 23: 48 89 de mov %rbx,%rsi 26: 48 89 e9 mov %rbp,%rcx * 29: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2b: 0f 1f 00 nopl (%rax) 2e: 49 89 cc mov %rcx,%r12 31: 48 89 cb mov %rcx,%rbx 34: 0f 01 ca clac 37: 31 ff xor %edi,%edi 39: 48 89 ce mov %rcx,%rsi 3c: e8 .byte 0xe8 3d: 45 c9 rex.RB leave