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WARNING: CPU: 2 PID: 8691 at fs/buffer.c:1128 mark_buffer_dirty+0x4fa/0x690 fs/buffer.c:1128
Kernel panic - not syncing: panic_on_warn set ...
CPU: 2 PID: 8691 Comm: syz-executor.0 Not tainted 5.6.0-rc6-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+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 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+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:mark_buffer_dirty+0x4fa/0x690 fs/buffer.c:1128
Code: 03 80 3c 02 00 0f 85 99 01 00 00 48 8b 3b be 04 00 00 00 e8 08 e5 fc ff 5b 5d 41 5c 41 5d 41 5e e9 ab d5 a9 ff e8 a6 d5 a9 ff <0f> 0b e9 4f fb ff ff e8 9a d5 a9 ff 0f 0b e9 73 fb ff ff e8 8e d5
RSP: 0000:ffffc90002357ac0 EFLAGS: 00010293
RAX: ffff88805e088100 RBX: ffff888076838690 RCX: ffffffff81c84ac7
RDX: 0000000000000000 RSI: ffffffff81c84f7a RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff88805e088100 R09: ffffed100ed070d3
R10: ffffed100ed070d2 R11: ffff888076838697 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888078d2c000
 __ext4_handle_dirty_metadata+0x41d/0x7a0 fs/ext4/ext4_jbd2.c:338
 __ext4_new_inode+0x2349/0x57e0 fs/ext4/ialloc.c:1072
 ext4_symlink+0x44f/0xe50 fs/ext4/namei.c:3295
 vfs_symlink fs/namei.c:4201 [inline]
 vfs_symlink+0x374/0x580 fs/namei.c:4187
 do_symlinkat+0x215/0x280 fs/namei.c:4228
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x270/0xe8f arch/x86/entry/common.c:408
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
Kernel Offset: disabled
Rebooting in 86400 seconds..