sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly loop2: detected capacity change from 0 to 512 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 322041 at lib/iov_iter.c:644 _copy_from_iter+0x2f1/0x1320 Modules linked in: CPU: 0 PID: 322041 Comm: syz-executor.6 Not tainted 6.4.0-rc2-next-20230515 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2f1/0x1320 Code: 92 ff ff 89 c3 e9 1f ff ff ff e8 fa dc 35 ff be 88 02 00 00 48 c7 c7 40 d8 9e 84 e8 29 e9 59 ff e9 13 fe ff ff e8 df dc 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 d0 dc 35 ff 31 ff 89 ee e8 07 d8 RSP: 0018:ffff88802e44f608 EFLAGS: 00010212 RAX: 0000000000002392 RBX: 0000000000000000 RCX: ffffc90008113000 RDX: 0000000000040000 RSI: ffffffff82161b91 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffffea00012bc400 R14: 0000000000001000 R15: ffff88802e44f838 FS: 00007f4224dc6700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000480be000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: copy_page_from_iter+0xe3/0x180 blk_rq_map_user_iov+0xb39/0x16c0 blk_rq_map_user_io+0x1d1/0x200 sg_common_write.constprop.0+0xd8d/0x15f0 sg_write.part.0+0x698/0xac0 sg_write+0x8d/0xe0 vfs_write+0x2b8/0xd40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f4227850b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4224dc6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4227963f60 RCX: 00007f4227850b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f42278aaf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff7836584f R14: 00007f4224dc6300 R15: 0000000000022000 irq event stamp: 3063 hardirqs last enabled at (3103): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (3160): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (2700): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (2679): [] irq_exit_rcu+0x93/0xc0 ---[ end trace 0000000000000000 ]--- ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3614/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3615/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3616/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3617/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3618/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3619/file0 supports timestamps until 2038-01-19 (0x7fffffff) warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3620/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3621/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3623/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3624/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3625/file0 supports timestamps until 2038-01-19 (0x7fffffff) hugetlbfs: Bad value 'm' for mount option 'size' loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3626/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3627/file0 supports timestamps until 2038-01-19 (0x7fffffff) 9pnet_virtio: no channels available for device syz 9pnet_virtio: no channels available for device syz loop2: detected capacity change from 0 to 512 ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3629/file0 supports timestamps until 2038-01-19 (0x7fffffff) loop2: detected capacity change from 0 to 512 EXT4-fs mount: 86 callbacks suppressed EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3630/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3631/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3633/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs: dax option not supported EXT4-fs: dax option not supported EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3634/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3635/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3636/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3637/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3638/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir968482939/syzkaller.yJOyyr/3639/file0 supports timestamps until 2038-01-19 (0x7fffffff) EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 512