------------[ cut here ]------------ WARNING: CPU: 1 PID: 7327 at fs/ext4/inode.c:3420 ext4_iomap_begin+0x1aa/0x780 fs/ext4/inode.c:3420 Modules linked in: CPU: 1 PID: 7327 Comm: syz-executor.3 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:ext4_iomap_begin+0x1aa/0x780 fs/ext4/inode.c:3420 Code: 83 c0 01 38 d0 7c 08 84 d2 0f 85 d8 05 00 00 41 0f b7 9f c2 05 00 00 31 ff 89 de e8 80 86 60 ff 66 85 db 74 5c e8 56 8a 60 ff <0f> 0b 41 bd de ff ff ff e8 49 8a 60 ff 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffffc90027ac7240 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 00000000000000a4 RCX: ffffc9000318a000 RDX: 0000000000040000 RSI: ffffffff821a4f6a RDI: 0000000000000003 RBP: 0000000000000190 R08: 0000000000000003 R09: 0000000000000000 R10: 00000000000000a4 R11: 0000000000000001 R12: 000000000000000c R13: ffff888025ef178a R14: ffffc90027ac7530 R15: ffff888025ef16c0 FS: 0000000000000000(0000) GS:ffff88802c900000(0063) knlGS:00000000f7f79b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000057fea08c CR3: 000000001227b000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iomap_iter+0x454/0x1110 fs/iomap/iter.c:74 __iomap_dio_rw+0x6b6/0x1a80 fs/iomap/direct-io.c:600 iomap_dio_rw+0x3c/0xa0 fs/iomap/direct-io.c:689 ext4_dio_write_iter fs/ext4/file.c:566 [inline] ext4_file_write_iter+0xe50/0x1520 fs/ext4/file.c:677 call_write_iter include/linux/fs.h:2187 [inline] do_iter_readv_writev+0x360/0x5c0 fs/read_write.c:731 do_iter_write+0x182/0x700 fs/read_write.c:857 vfs_iter_write+0x70/0xa0 fs/read_write.c:898 iter_file_splice_write+0x723/0xc70 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x110/0x180 fs/splice.c:934 splice_direct_to_actor+0x331/0x8a0 fs/splice.c:889 do_splice_direct+0x1a7/0x270 fs/splice.c:977 do_sendfile+0xb19/0x1270 fs/read_write.c:1251 __do_compat_sys_sendfile fs/read_write.c:1340 [inline] __se_compat_sys_sendfile fs/read_write.c:1323 [inline] __ia32_compat_sys_sendfile+0x1dd/0x220 fs/read_write.c:1323 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+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f7e549 Code: 03 74 c0 01 10 05 03 74 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 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:00000000f7f795cc EFLAGS: 00000296 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000004 RDX: 0000000000000000 RSI: 00000000ffffdffa RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi