------------[ cut here ]------------ WARNING: CPU: 1 PID: 8537 at fs/buffer.c:1088 mark_buffer_dirty+0x524/0x6c0 fs/buffer.c:1088 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 8537 Comm: syz-executor.1 Not tainted 5.4.0-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:1088 Code: 02 00 0f 85 9e 01 00 00 48 8b 3b be 04 00 00 00 e8 51 e7 fc ff e8 4c d2 a8 ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3c d2 a8 ff <0f> 0b e9 2c fb ff ff e8 30 d2 a8 ff 0f 0b e9 53 fb ff ff e8 24 d2 RSP: 0000:ffff8880656d72f8 EFLAGS: 00010293 RAX: ffff88806dd68140 RBX: ffff888077cd9738 RCX: ffffffff81cc070e RDX: 0000000000000000 RSI: ffffffff81cc0be4 RDI: 0000000000000001 RBP: ffff8880656d7320 R08: ffff88806dd68140 R09: ffffed100ef9b2e8 R10: ffffed100ef9b2e7 R11: ffff888077cd973f R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888070b421f8 __ext4_handle_dirty_metadata+0x3f7/0x600 fs/ext4/ext4_jbd2.c:298 ext4_free_blocks+0xeab/0x24d0 fs/ext4/mballoc.c:4940 ext4_remove_blocks fs/ext4/extents.c:2678 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2831 [inline] ext4_ext_remove_space+0x2491/0x5650 fs/ext4/extents.c:3076 ext4_ext_truncate+0x1b5/0x200 fs/ext4/extents.c:4599 ext4_truncate+0xc6e/0x13c0 fs/ext4/inode.c:4511 ext4_evict_inode+0x9d4/0x14e0 fs/ext4/inode.c:289 evict+0x306/0x680 fs/inode.c:574 iput_final fs/inode.c:1563 [inline] iput+0x55d/0x900 fs/inode.c:1589 dentry_unlink_inode+0x2d9/0x400 fs/dcache.c:374 __dentry_kill+0x38b/0x600 fs/dcache.c:579 dentry_kill fs/dcache.c:698 [inline] dput+0x62f/0xe10 fs/dcache.c:859 path_put+0x31/0x70 fs/namei.c:482 free_fs_struct+0x25/0x70 fs/fs_struct.c:91 exit_fs+0xf0/0x130 fs/fs_struct.c:108 do_exit+0x8bd/0x2ef0 kernel/exit.c:793 do_group_exit+0x135/0x360 kernel/exit.c:895 get_signal+0x47c/0x24f0 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x676/0x790 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a759 Code: Bad RIP value. RSP: 002b:00007faf7cbeacf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000071bf08 RCX: 000000000045a759 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000071bf08 RBP: 000000000071bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000071bf0c R13: 00007ffc79ee6e9f R14: 00007faf7cbcb000 R15: 0000000000000003 Kernel Offset: disabled Rebooting in 86400 seconds..