blkdev_ioctl+0x513/0x6f0 block/ioctl.c:774 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:858! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 14083 Comm: syz.3.2255 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__filemap_add_folio+0xf7f/0x1220 mm/filemap.c:858 Code: c5 c6 ff 48 c7 c6 60 15 9d 8b 4c 89 ef e8 19 0e 12 00 90 0f 0b e8 31 c5 c6 ff 48 c7 c6 c0 15 9d 8b 4c 89 ef e8 02 0e 12 00 90 <0f> 0b e8 1a c5 c6 ff 90 0f 0b 90 e9 9b fe ff ff e8 0c c5 c6 ff 90 RSP: 0018:ffffc900068f7618 EFLAGS: 00010246 RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc90005609000 RDX: 0000000000080000 RSI: ffffffff825262e8 RDI: ffff88802e274d84 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002 R13: ffffea0000995000 R14: 0000000000000000 R15: 1ffff92000d1eeed FS: 00007f73070dd6c0(0000) GS:ffff8880d66b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdfbabeb5a0 CR3: 00000000545c0000 CR4: 0000000000352ef0 DR0: 000000000000a000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000002e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: filemap_add_folio+0x1d8/0x690 mm/filemap.c:966 ra_alloc_folio mm/readahead.c:453 [inline] page_cache_ra_order+0x614/0xfe0 mm/readahead.c:512 do_sync_mmap_readahead mm/filemap.c:3400 [inline] filemap_fault+0x1b56/0x37c0 mm/filemap.c:3549 __do_fault+0x10d/0x550 mm/memory.c:5323 do_read_fault mm/memory.c:5758 [inline] do_fault+0xaf9/0x1990 mm/memory.c:5892 do_pte_missing mm/memory.c:4404 [inline] handle_pte_fault mm/memory.c:6276 [inline] __handle_mm_fault+0x1807/0x2b50 mm/memory.c:6414 handle_mm_fault+0x36d/0xa20 mm/memory.c:6583 do_user_addr_fault+0x74c/0x12f0 arch/x86/mm/fault.c:1385 handle_page_fault arch/x86/mm/fault.c:1474 [inline] exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1527 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0010:__get_user_8+0x14/0x30 arch/x86/lib/getuser.S:103 Code: ca e9 50 78 04 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 ba 00 f0 ff ff ff 7f 00 00 48 39 d0 48 0f 47 c2 0f 01 cb <48> 8b 10 31 c0 0f 01 ca c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc900068f7e08 EFLAGS: 00050287 RAX: 0000200000000788 RBX: 0000000000000000 RCX: ffffc90005609000 RDX: 00007ffffffff000 RSI: ffffffff82543601 RDI: ffffffff8bfaa9a0 RBP: ffffc900068f7f00 R08: 0000000000000001 R09: 00000000000001cf R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000001 __do_sys_io_submit fs/aio.c:2107 [inline] __se_sys_io_submit fs/aio.c:2082 [inline] __x64_sys_io_submit+0x20a/0x3a0 fs/aio.c:2082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f730619bf79 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f73070dd028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f7306415fa0 RCX: 00007f730619bf79 RDX: 0000200000000780 RSI: 0000000000000002 RDI: 00007f7307093000 RBP: 00007f73062327e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7306416038 R14: 00007f7306415fa0 R15: 00007ffe7849e138 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0xf7f/0x1220 mm/filemap.c:858 Code: c5 c6 ff 48 c7 c6 60 15 9d 8b 4c 89 ef e8 19 0e 12 00 90 0f 0b e8 31 c5 c6 ff 48 c7 c6 c0 15 9d 8b 4c 89 ef e8 02 0e 12 00 90 <0f> 0b e8 1a c5 c6 ff 90 0f 0b 90 e9 9b fe ff ff e8 0c c5 c6 ff 90 RSP: 0018:ffffc900068f7618 EFLAGS: 00010246 RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc90005609000 RDX: 0000000000080000 RSI: ffffffff825262e8 RDI: ffff88802e274d84 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002 R13: ffffea0000995000 R14: 0000000000000000 R15: 1ffff92000d1eeed FS: 00007f73070dd6c0(0000) GS:ffff8880d65b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdfbb7456b8 CR3: 00000000545c0000 CR4: 0000000000352ef0 DR0: 000000000000a000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000002e DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: ca e9 50 lret $0x50e9 3: 78 04 js 0x9 5: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax) 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: 48 ba 00 f0 ff ff ff movabs $0x7ffffffff000,%rdx 1d: 7f 00 00 20: 48 39 d0 cmp %rdx,%rax 23: 48 0f 47 c2 cmova %rdx,%rax 27: 0f 01 cb stac * 2a: 48 8b 10 mov (%rax),%rdx <-- trapping instruction 2d: 31 c0 xor %eax,%eax 2f: 0f 01 ca clac 32: c3 ret 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 66 data16 38: 66 data16 39: 2e cs 3a: 0f .byte 0xf 3b: 1f (bad) 3c: 84 00 test %al,(%rax)