sg_write: data in/out 917527/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.7 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6876 at lib/iov_iter.c:364 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 1 PID: 6876 Comm: syz-executor.7 Not tainted 6.2.0-rc8-next-20230217 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2b2/0x1140 Code: 5d 41 5e 41 5f e9 32 fc 33 02 e8 29 e8 35 ff be 70 01 00 00 48 c7 c7 e0 d4 9e 84 e8 08 dd 59 ff e9 51 fe ff ff e8 0e e8 35 ff <0f> 0b 45 31 f6 eb 87 e8 02 e8 35 ff 31 ff 89 ee e8 69 e3 35 ff 40 RSP: 0018:ffff8880196d7608 EFLAGS: 00010212 RAX: 00000000000040b1 RBX: 0000000000000000 RCX: ffffc90002e12000 RDX: 0000000000040000 RSI: ffffffff821593b2 RDI: 0000000000000001 RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff8880196d7838 R14: 0000000000001000 R15: ffff8880196d7838 FS: 00007feccecf8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2be25000 CR3: 0000000044ed4000 CR4: 0000000000350ee0 Call Trace: copy_page_from_iter+0x251/0x430 blk_rq_map_user_iov+0xb41/0x16c0 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+0x2cf/0xdc0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fecd1782b19 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:00007feccecf8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fecd1895f60 RCX: 00007fecd1782b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004 RBP: 00007fecd17dcf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc01f343bf R14: 00007feccecf8300 R15: 0000000000022000 irq event stamp: 3251 hardirqs last enabled at (3285): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (3316): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1148): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (1069): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6876 comm=syz-executor.7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=6876 comm=syz-executor.7 syz-executor.6(6914): Recompile this 32-bit application with '-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE' or '-D_GNU_SOURCE'