loop4: detected capacity change from 0 to 40 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.7 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5322 at lib/iov_iter.c:644 _copy_from_iter+0x2f1/0x1330 Modules linked in: CPU: 0 PID: 5322 Comm: syz-executor.7 Not tainted 6.3.0-next-20230505 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2f1/0x1330 Code: 36 ff 44 89 f3 e9 2f ff ff ff e8 fa 12 36 ff be 88 02 00 00 48 c7 c7 e0 d7 9e 84 e8 b9 20 5a ff e9 13 fe ff ff e8 df 12 36 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 d0 12 36 ff 31 ff 89 ee e8 07 0e RSP: 0018:ffff8880466cf608 EFLAGS: 00010212 RAX: 0000000000003e77 RBX: 0000000000000000 RCX: ffffc900011d4000 RDX: 0000000000040000 RSI: ffffffff8215ec31 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffffea00010d0200 R14: 0000000000001000 R15: ffff8880466cf838 FS: 00007f111882d700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c025000 CR3: 000000004380c000 CR4: 0000000000350ef0 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 loop5: detected capacity change from 0 to 40 sg_write+0x8d/0xe0 vfs_write+0x2d8/0xdd0 loop6: detected capacity change from 0 to 40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f111b2b7b19 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:00007f111882d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f111b3caf60 RCX: 00007f111b2b7b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f111b311f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff83fbe9cf R14: 00007f111882d300 R15: 0000000000022000 irq event stamp: 4297 hardirqs last enabled at (4323): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (4348): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (3596): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (3471): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.2 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=5328 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=5338 comm=syz-executor.7 loop5: detected capacity change from 0 to 40 loop4: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=5360 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=5359 comm=syz-executor.7 loop5: detected capacity change from 0 to 40 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.2 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=5379 comm=syz-executor.2 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.7 not setting count and/or reply_len properly loop6: detected capacity change from 0 to 40 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=5394 comm=syz-executor.7 audit: type=1400 audit(1683309649.056:12): avc: denied { execstack } for pid=5441 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 raw_sendmsg: syz-executor.7 forgot to set AF_INET. Fix it! sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. loop6: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 loop6: detected capacity change from 0 to 40 program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium