------------[ cut here ]------------ WARNING: CPU: 0 PID: 12440 at fs/buffer.c:1130 mark_buffer_dirty+0x376/0x3e0 fs/buffer.c:1130 Modules linked in: CPU: 0 PID: 12440 Comm: syz-executor.1 Not tainted 6.4.0-rc3-syzkaller-00242-ga92c9ab69f66 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:mark_buffer_dirty+0x376/0x3e0 fs/buffer.c:1130 Code: e9 9f 76 8d ff e8 9a 76 8d ff 48 89 ef e8 b2 13 e8 ff 5b 5d e9 8b 76 8d ff e8 86 76 8d ff 0f 0b e9 10 fe ff ff e8 7a 76 8d ff <0f> 0b e9 b7 fc ff ff e8 6e 76 8d ff 0f 0b e9 d6 fc ff ff 48 89 df RSP: 0018:ffffc900293df400 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88802016f658 RCX: ffffc90007be1000 RDX: 0000000000040000 RSI: ffffffff81f6d056 RDI: 0000000000000001 RBP: 1ffff9200527be00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000003 R14: dffffc0000000000 R15: 0000000000009000 FS: 0000000000000000(0000) GS:ffff88802c600000(0063) knlGS:00000000f7fd7b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020000080 CR3: 000000004d86f000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __nilfs_mark_inode_dirty+0xac/0x240 fs/nilfs2/inode.c:1115 nilfs_dirty_inode+0x195/0x260 fs/nilfs2/inode.c:1148 __mark_inode_dirty+0x1e0/0xd60 fs/fs-writeback.c:2424 mark_inode_dirty include/linux/fs.h:2144 [inline] generic_write_end+0x354/0x440 fs/buffer.c:2257 nilfs_write_end+0x7e/0x100 fs/nilfs2/inode.c:280 generic_perform_write+0x316/0x570 mm/filemap.c:3934 __generic_file_write_iter+0x39d/0x500 mm/filemap.c:4019 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4083 call_write_iter include/linux/fs.h:1868 [inline] do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735 do_iter_write+0x185/0x7e0 fs/read_write.c:860 vfs_iter_write+0x74/0xa0 fs/read_write.c:901 iter_file_splice_write+0x743/0xc80 fs/splice.c:795 do_splice_from fs/splice.c:873 [inline] direct_splice_actor+0x114/0x180 fs/splice.c:1039 splice_direct_to_actor+0x335/0x8a0 fs/splice.c:994 do_splice_direct+0x1ab/0x280 fs/splice.c:1082 do_sendfile+0xb19/0x12c0 fs/read_write.c:1254 __do_compat_sys_sendfile fs/read_write.c:1343 [inline] __se_compat_sys_sendfile fs/read_write.c:1326 [inline] __ia32_compat_sys_sendfile+0x1e1/0x220 fs/read_write.c:1326 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7fdc579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7fd75cc EFLAGS: 00000296 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000000007 RDX: 0000000000000000 RSI: 0000000000201004 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 retq 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi