__dev_close net/core/dev.c:1714 [inline] __dev_change_flags+0x310/0x700 net/core/dev.c:9364 netif_change_flags+0x8b/0x1a0 net/core/dev.c:9429 do_setlink+0xee3/0x4390 net/core/rtnetlink.c:3152 rtnl_group_changelink net/core/rtnetlink.c:3783 [inline] __rtnl_newlink net/core/rtnetlink.c:3937 [inline] rtnl_newlink+0x1619/0x1fe0 net/core/rtnetlink.c:4065 ------------[ cut here ]------------ kernel BUG at mm/filemap.c:3433! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 7803 Comm: syz.2.532 Not tainted 6.15.0-rc2-syzkaller-00471-g119009db2674 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:filemap_fault+0x1360/0x13d0 mm/filemap.c:3433 Code: c4 ff 48 8b 3c 24 48 c7 c6 40 0e 54 8c e8 a8 f9 0e 00 90 0f 0b e8 20 e7 c4 ff 48 89 df 48 c7 c6 c0 07 54 8c e8 91 f9 0e 00 90 <0f> 0b e8 09 e7 c4 ff 48 8b 3c 24 48 c7 c6 40 0e 54 8c e8 79 f9 0e RSP: 0018:ffffc9000386f120 EFLAGS: 00010246 RAX: f7b52cc64bc8c400 RBX: ffffea0000c97580 RCX: 0000000000000000 RDX: ffffc9000ba29000 RSI: ffffffff8e4c7ff1 RDI: ffffffff8ca0e180 RBP: ffffc9000386f258 R08: ffffffff82363556 R09: fffffbfff1d7a960 R10: dffffc0000000000 R11: fffffbfff1d7a960 R12: ffff888148c158f8 R13: 1ffffd4000192eb1 R14: dffffc0000000000 R15: ffffea0000c97588 FS: 00007f90704196c0(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001f70 CR3: 000000006eee0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_fault+0x135/0x390 mm/memory.c:5098 do_read_fault mm/memory.c:5518 [inline] do_fault mm/memory.c:5652 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault+0x3f0c/0x61c0 mm/memory.c:5997 __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0x1030/0x1aa0 mm/memory.c:6309 do_user_addr_fault arch/x86/mm/fault.c:1388 [inline] handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x2bb/0x920 arch/x86/mm/fault.c:1538 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 c3 cc cc cc cc 66 2e RSP: 0018:ffffc9000386f930 EFLAGS: 00050202 RAX: 00007ffffffff001 RBX: 0000200000001f70 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000200000001f70 RDI: ffff888025a24cb0 RBP: 0000000000000001 R08: ffff888025a24cb0 R09: 1ffff11004b44996 R10: dffffc0000000000 R11: ffffed1004b44997 R12: ffff888025a24cb0 R13: 1ffff110046f9787 R14: ffff888025a24cb0 R15: 0000000000000001 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+0x7b/0xb0 lib/usercopy.c:18 copy_from_user include/linux/uaccess.h:212 [inline] snd_rawmidi_kernel_write1+0x390/0x620 sound/core/rawmidi.c:1560 snd_rawmidi_write+0x5f2/0xc00 sound/core/rawmidi.c:1629 do_loop_readv_writev fs/read_write.c:848 [inline] vfs_writev+0x5ba/0xbc0 fs/read_write.c:1057 do_writev+0x1b8/0x360 fs/read_write.c:1101 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f906f58e169 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:00007f9070419038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f906f7b5fa0 RCX: 00007f906f58e169 RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000006 RBP: 00007f906f610a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f906f7b5fa0 R15: 00007fff16429578 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_fault+0x1360/0x13d0 mm/filemap.c:3433 Code: c4 ff 48 8b 3c 24 48 c7 c6 40 0e 54 8c e8 a8 f9 0e 00 90 0f 0b e8 20 e7 c4 ff 48 89 df 48 c7 c6 c0 07 54 8c e8 91 f9 0e 00 90 <0f> 0b e8 09 e7 c4 ff 48 8b 3c 24 48 c7 c6 40 0e 54 8c e8 79 f9 0e RSP: 0018:ffffc9000386f120 EFLAGS: 00010246 RAX: f7b52cc64bc8c400 RBX: ffffea0000c97580 RCX: 0000000000000000 RDX: ffffc9000ba29000 RSI: ffffffff8e4c7ff1 RDI: ffffffff8ca0e180 RBP: ffffc9000386f258 R08: ffffffff82363556 R09: fffffbfff1d7a960 R10: dffffc0000000000 R11: fffffbfff1d7a960 R12: ffff888148c158f8 R13: 1ffffd4000192eb1 R14: dffffc0000000000 R15: ffffea0000c97588 FS: 00007f90704196c0(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001f70 CR3: 000000006eee0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- 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: c3 ret 39: cc int3 3a: cc int3 3b: cc int3 3c: cc int3 3d: 66 data16 3e: 2e cs