Hello, syzbot found the following issue on: HEAD commit: a2824f19e606 Merge tag 'mtd/fixes-for-5.14-rc7' of git://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=110d54ee300000 kernel config: https://syzkaller.appspot.com/x/.config?x=96f0602203250753 dashboard link: https://syzkaller.appspot.com/bug?extid=67654e51e54455f1c585 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12eeb6a6300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13515779300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+67654e51e54455f1c585@xxxxxxxxxxxxxxxxxxxxxxxxx Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffedef26928 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000043f589 RDX: 000000000000effd RSI: 0000000020000680 RDI: 0000000000000003 RBP: 00007ffedef26930 R08: 0000000000000001 R09: 0000000000400034 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 ------------[ cut here ]------------ kernel BUG at fs/hugetlbfs/inode.c:532! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8445 Comm: syz-executor211 Not tainted 5.14.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:remove_inode_hugepages+0x52f/0xa90 fs/hugetlbfs/inode.c:532 Code: ff e8 d5 f2 4c ff 48 89 ef e8 3d c3 70 ff e9 17 ff ff ff e8 c3 f2 4c ff 48 89 ef e8 cb 50 71 ff e9 1a fe ff ff e8 b1 f2 4c ff <0f> 0b e8 aa f2 4c ff 49 83 ed 01 e9 d5 fd ff ff e8 9c f2 4c ff 48 RSP: 0018:ffffc900017afa30 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888017093880 RSI: ffffffff8228b64f RDI: 0000000000000003 RBP: ffffea0000a48000 R08: 0000000000000000 R09: ffffea0000a4802f R10: ffffffff8228b4a7 R11: 0000000000000000 R12: 7fffffffffffffff R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004801c0 CR3: 0000000029917000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hugetlbfs_evict_inode+0x1f/0x70 fs/hugetlbfs/inode.c:557 evict+0x2ed/0x6b0 fs/inode.c:584 iput_final fs/inode.c:1660 [inline] iput.part.0+0x539/0x850 fs/inode.c:1686 iput+0x58/0x70 fs/inode.c:1676 dentry_unlink_inode+0x2b1/0x3d0 fs/dcache.c:376 __dentry_kill+0x3c0/0x640 fs/dcache.c:582 dentry_kill fs/dcache.c:708 [inline] dput+0x73a/0xbc0 fs/dcache.c:888 __fput+0x3ae/0x920 fs/file_table.c:293 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xbd4/0x2a60 kernel/exit.c:825 do_group_exit+0x125/0x310 kernel/exit.c:922 __do_sys_exit_group kernel/exit.c:933 [inline] __se_sys_exit_group kernel/exit.c:931 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43e289 Code: Unable to access opcode bytes at RIP 0x43e25f. RSP: 002b:00007ffedef26908 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00000000004af3b0 RCX: 000000000043e289 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000400034 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004af3b0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 Modules linked in: ---[ end trace b9c8e89a63f407f9 ]--- RIP: 0010:remove_inode_hugepages+0x52f/0xa90 fs/hugetlbfs/inode.c:532 Code: ff e8 d5 f2 4c ff 48 89 ef e8 3d c3 70 ff e9 17 ff ff ff e8 c3 f2 4c ff 48 89 ef e8 cb 50 71 ff e9 1a fe ff ff e8 b1 f2 4c ff <0f> 0b e8 aa f2 4c ff 49 83 ed 01 e9 d5 fd ff ff e8 9c f2 4c ff 48 RSP: 0018:ffffc900017afa30 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888017093880 RSI: ffffffff8228b64f RDI: 0000000000000003 RBP: ffffea0000a48000 R08: 0000000000000000 R09: ffffea0000a4802f R10: ffffffff8228b4a7 R11: 0000000000000000 R12: 7fffffffffffffff R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004801c0 CR3: 0000000029917000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 28 c3 sub %al,%bl 2: e8 2a 14 00 00 callq 0x1431 7: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) e: 00 00 00 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 retq 33: 48 c7 c1 c0 ff ff ff mov $0xffffffffffffffc0,%rcx 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
