R13: 0000000000000002 R14: 00007fd399981000 R15: 0000000020004040 </TASK> sg_write: data in/out 363/1855 bytes for SCSI command 0xd8-- guessing data in; program syz-executor.7 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7879 at lib/iov_iter.c:364 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 1 PID: 7879 Comm: syz-executor.7 Not tainted 6.3.0-rc2-next-20230317 #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 52 f0 32 02 e8 09 66 36 ff be 70 01 00 00 48 c7 c7 c0 bd 9e 84 e8 68 53 5a ff e9 51 fe ff ff e8 ee 65 36 ff <0f> 0b 45 31 f6 eb 87 e8 e2 65 36 ff 31 ff 89 ee e8 19 61 36 ff 40 RSP: 0018:ffff88804364f608 EFLAGS: 00010216 RAX: 0000000000000e42 RBX: 0000000000000000 RCX: ffffc900049fc000 RDX: 0000000000040000 RSI: ffffffff8214f712 RDI: 0000000000000001 RBP: 000000000000073f R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88804364f838 R14: 000000000000073f R15: ffff88804364f838 FS: 00007f68f5fef700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f68f8ac7708 CR3: 0000000015aea000 CR4: 0000000000350ee0 Call Trace: <TASK> 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+0x2d8/0xdd0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f68f8a79b19 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:00007f68f5fef188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f68f8b8cf60 RCX: 00007f68f8a79b19 RDX: 000000000000076f RSI: 0000000020000740 RDI: 0000000000000003 RBP: 00007f68f8ad3f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf02445af R14: 00007f68f5fef300 R15: 0000000000022000 </TASK> irq event stamp: 1871 hardirqs last enabled at (1883): [<ffffffff812f8eb8>] __up_console_sem+0x78/0x80 hardirqs last disabled at (1894): [<ffffffff812f8e9d>] __up_console_sem+0x5d/0x80 softirqs last enabled at (1724): [<ffffffff8118d7bc>] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (1509): [<ffffffff8118d7bc>] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7884 Comm: syz-executor.2 Tainted: G W 6.3.0-rc2-next-20230317 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xc1/0xf0 should_fail_ex+0x4b4/0x5b0 should_failslab+0x9/0x20 kmem_cache_alloc+0x5a/0x390 getname_flags.part.0+0x50/0x4f0 getname_flags+0x9e/0xf0 user_path_at_empty+0x2f/0x70 __x64_sys_mount+0x1ed/0x310 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f721305304a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f72105c6fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020001880 RCX: 00007f721305304a RDX: 0000000020000480 RSI: 0000000000000000 RDI: 00007f72105c7000 RBP: 00007f72105c7040 R08: 00007f72105c7040 R09: 0000000020000480 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000480 R13: 0000000000000000 R14: 00007f72105c7000 R15: 0000000020004040 </TASK> FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7890 Comm: syz-executor.4 Tainted: G W 6.3.0-rc2-next-20230317 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xc1/0xf0 should_fail_ex+0x4b4/0x5b0 _copy_from_user+0x2e/0x180 copy_mount_options+0x76/0x180 __x64_sys_mount+0x1ac/0x310 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f28a704c04a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f28a45bffa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020001880 RCX: 00007f28a704c04a RDX: 0000000020000480 RSI: 0000000000000000 RDI: 00007f28a45c0000 RBP: 00007f28a45c0040 R08: 00007f28a45c0040 R09: 0000000020000480 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000480 R13: 0000000000000000 R14: 00007f28a45c0000 R15: 0000000020004040 </TASK> sg_write: data in/out 926365459/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.7 not setting count and/or reply_len properly