------------[ cut here ]------------ WARNING: CPU: 0 PID: 11484 at kernel/locking/lockdep.c:894 look_up_lock_class+0x86/0x110 kernel/locking/lockdep.c:894 Modules linked in: CPU: 0 PID: 11484 Comm: syz-executor.0 Not tainted 5.10.210 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:look_up_lock_class+0x86/0x110 kernel/locking/lockdep.c:894 Code: 24 e8 ce 02 00 00 4d 85 e4 74 2c 49 39 5c 24 40 75 eb 48 8b 45 18 49 39 84 24 b0 00 00 00 74 1a 48 81 7d 00 00 e2 14 86 74 10 <0f> 0b eb 0c e8 01 cb 0a fe 85 c0 75 50 45 31 e4 48 83 c4 08 4c 89 RSP: 0018:ffff888050697590 EFLAGS: 00010002 RAX: ffffffff84535020 RBX: ffffffff871b5521 RCX: 0000000000000000 RDX: 0000000000000046 RSI: 0000000000000001 RDI: ffff88801d6b33b0 RBP: ffff88801d6b33b0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000246 R11: 0000000000000001 R12: ffffffff868b5ec0 R13: ffffffff86bf19e0 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f6a1fee8700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000055238000 CR4: 0000000000350ef0 Call Trace: register_lock_class+0xbb/0x17b0 kernel/locking/lockdep.c:1244 __lock_acquire+0x102/0x5b00 kernel/locking/lockdep.c:4834 lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 down_write_nested+0x96/0x160 kernel/locking/rwsem.c:1667 ext4_double_down_write_data_sem fs/ext4/move_extent.c:58 [inline] ext4_move_extents+0x90d/0x3050 fs/ext4/move_extent.c:610 __ext4_ioctl+0x302e/0x4190 fs/ext4/ioctl.c:999 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7f6a22972b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6a1fee8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6a22a85f60 RCX: 00007f6a22972b19 RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 RBP: 00007f6a229ccf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd166226f R14: 00007f6a1fee8300 R15: 0000000000022000 irq event stamp: 1475 hardirqs last enabled at (1475): [] syscall_enter_from_user_mode+0x1d/0x50 kernel/entry/common.c:98 hardirqs last disabled at (1474): [] do_syscall_64+0xf/0x40 arch/x86/entry/common.c:41 softirqs last enabled at (804): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (757): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 7ec2821906311bbc ]--- FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 11487 Comm: syz-executor.2 Tainted: G W 5.10.210 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 prepare_alloc_pages mm/page_alloc.c:4939 [inline] __alloc_pages_nodemask+0x182/0x600 mm/page_alloc.c:4981 alloc_pages_current+0x187/0x280 mm/mempolicy.c:2266 alloc_pages include/linux/gfp.h:547 [inline] push_pipe+0x2b5/0x6d0 lib/iov_iter.c:528 copy_pipe_to_iter lib/iov_iter.c:558 [inline] _copy_to_iter+0x509/0x12d0 lib/iov_iter.c:622 copy_to_iter include/linux/uio.h:151 [inline] seq_read_iter+0xdcb/0x12b0 fs/seq_file.c:281 kernfs_fop_read_iter+0x456/0x5f0 fs/kernfs/file.c:241 call_read_iter include/linux/fs.h:1956 [inline] generic_file_splice_read+0x455/0x6d0 fs/splice.c:311 do_splice_to+0x10e/0x160 fs/splice.c:788 splice_direct_to_actor+0x2fe/0x980 fs/splice.c:867 do_splice_direct+0x1c4/0x290 fs/splice.c:976 generic_copy_file_range fs/read_write.c:1386 [inline] vfs_copy_file_range+0x4f8/0x1290 fs/read_write.c:1532 __do_sys_copy_file_range+0x193/0x420 fs/read_write.c:1589 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7fbe09246b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbe067bc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146 RAX: ffffffffffffffda RBX: 00007fbe09359f60 RCX: 00007fbe09246b19 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fbe067bc1d0 R08: 00000000000000a1 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffed83146ff R14: 00007fbe067bc300 R15: 0000000000022000 EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue