qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 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] __do_kmalloc_node mm/slub.c:4326 [inline] __kmalloc_noprof+0x1d4/0x510 mm/slub.c:4339 kmalloc_noprof include/linux/slab.h:909 [inline] tomoyo_realpath_from_path+0xc2/0x6e0 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x245/0x580 security/tomoyo/file.c:723 security_file_ioctl+0x9b/0x240 security/security.c:2913 __do_sys_ioctl fs/ioctl.c:900 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0xb7/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 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 NOPTI CPU: 0 UID: 0 PID: 11062 Comm: syz.4.1304 Not tainted 6.15.0-rc6-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:filemap_fault+0x1862/0x2740 mm/filemap.c:3433 Code: 00 e9 bf ec ff ff 48 8b 7c 24 28 e8 f8 49 2d 00 e9 66 f3 ff ff e8 ce cd c7 ff 48 c7 c6 00 ef 98 8b 48 89 df e8 2f 94 10 00 90 <0f> 0b e8 b7 cd c7 ff 48 c7 c6 60 e5 98 8b 48 89 df e8 18 94 10 00 RSP: 0018:ffffc9000434f510 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffffea0001742a80 RCX: ffffc9000ce3a000 RDX: 0000000000080000 RSI: ffffffff81f36311 RDI: ffff88802d1c8444 RBP: ffffc9000434f7e0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888023f2d8f8 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000 FS: 00007fcee9a0c6c0(0000) GS:ffff8881249e1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001bf2 CR3: 0000000069a3f000 CR4: 00000000003526f0 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:rep_movs_alternative+0xf/0x90 arch/x86/lib/copy_user_64.S:46 Code: c4 10 c3 cc cc cc cc 0f 1f 40 00 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 66 RSP: 0018:ffffc9000434fa78 EFLAGS: 00050202 RAX: 0000000000000001 RBX: 0000200000001bf2 RCX: 0000000000000001 RDX: ffffed100e4f8d27 RSI: 0000200000001bf2 RDI: ffff8880727c6932 RBP: 0000000000000001 R08: 0000000000000001 R09: ffffed100e4f8d26 R10: ffff8880727c6932 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880727c6932 R14: dffffc0000000000 R15: 0000200000001bf2 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+0x98/0xd0 lib/usercopy.c:18 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 do_loop_readv_writev fs/read_write.c:848 [inline] do_loop_readv_writev fs/read_write.c:833 [inline] vfs_writev+0x6c4/0xdc0 fs/read_write.c:1057 do_writev+0x295/0x330 fs/read_write.c:1101 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcee8b8e969 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:00007fcee9a0c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007fcee8db5fa0 RCX: 00007fcee8b8e969 RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000006 RBP: 00007fcee8c10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcee8db5fa0 R15: 00007ffc7df4dbb8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_fault+0x1862/0x2740 mm/filemap.c:3433 Code: 00 e9 bf ec ff ff 48 8b 7c 24 28 e8 f8 49 2d 00 e9 66 f3 ff ff e8 ce cd c7 ff 48 c7 c6 00 ef 98 8b 48 89 df e8 2f 94 10 00 90 <0f> 0b e8 b7 cd c7 ff 48 c7 c6 60 e5 98 8b 48 89 df e8 18 94 10 00 RSP: 0018:ffffc9000434f510 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffffea0001742a80 RCX: ffffc9000ce3a000 RDX: 0000000000080000 RSI: ffffffff81f36311 RDI: ffff88802d1c8444 RBP: ffffc9000434f7e0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888023f2d8f8 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000 FS: 00007fcee9a0c6c0(0000) GS:ffff8881249e1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001bf2 CR3: 0000000069a3f000 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: 0f 1f 40 00 nopl 0x0(%rax) 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: 66 data16