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WARNING: CPU: 2 PID: 15142 at fs/buffer.c:1128 mark_buffer_dirty+0x524/0x6c0 fs/buffer.c:1128
Kernel panic - not syncing: panic_on_warn set ...
CPU: 2 PID: 15142 Comm: syz-executor.2 Not tainted 5.6.0-rc2-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:mark_buffer_dirty+0x524/0x6c0 fs/buffer.c:1128
Code: 02 00 0f 85 9e 01 00 00 48 8b 3b be 04 00 00 00 e8 71 c9 fc ff e8 ec 13 a7 ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 dc 13 a7 ff <0f> 0b e9 2c fb ff ff e8 d0 13 a7 ff 0f 0b e9 53 fb ff ff e8 c4 13
RSP: 0000:ffffc900020d7ab0 EFLAGS: 00010293
RAX: ffff88801edc4f80 RBX: ffff88802636ca80 RCX: ffffffff81ce6e9e
RDX: 0000000000000000 RSI: ffffffff81ce7374 RDI: 0000000000000001
RBP: ffffc900020d7ad8 R08: ffff88801edc4f80 R09: ffffed1004c6d951
R10: ffffed1004c6d950 R11: ffff88802636ca87 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __ext4_handle_dirty_metadata+0x421/0x7a0 fs/ext4/ext4_jbd2.c:338
 ext4_free_inode+0xd85/0x1880 fs/ext4/ialloc.c:340
 ext4_evict_inode+0xeca/0x1590 fs/ext4/inode.c:315
 evict+0x306/0x680 fs/inode.c:575
 iput_final fs/inode.c:1571 [inline]
 iput+0x55d/0x900 fs/inode.c:1597
 do_unlinkat+0x44c/0x6d0 fs/namei.c:4143
 __do_sys_unlink fs/namei.c:4184 [inline]
 __se_sys_unlink fs/namei.c:4182 [inline]
 __ia32_sys_unlink+0x41/0x50 fs/namei.c:4182
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f40e39
Code: 1d 00 00 00 89 d3 5b 5e 5d c3 8b 04 24 c3 8b 1c 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffbec6dc EFLAGS: 00000292 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00000000ffbec780 RCX: 000000005e5f4402
RDX: 0000000008130000 RSI: 0000000000000000 RDI: 00000000ffbec780
RBP: 00000000080d8900 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..