sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.4 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4985 at lib/iov_iter.c:629 _copy_from_iter+0x2f1/0x1130
Modules linked in:
CPU: 1 PID: 4985 Comm: syz-executor.4 Not tainted 6.1.0-next-20221214 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2f1/0x1130
Code: 37 ff 44 89 f3 e9 2f ff ff ff e8 ea 3a 37 ff be 79 02 00 00 48 c7 c7 80 c5 9e 84 e8 19 b7 5a ff e9 13 fe ff ff e8 cf 3a 37 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 c0 3a 37 ff 31 ff 89 ee e8 87 36
RSP: 0018:ffff8880220675e8 EFLAGS: 00010212
RAX: 00000000000046a3 RBX: 0000000000000000 RCX: ffffc90003a18000
RDX: 0000000000040000 RSI: ffffffff8211ef01 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffffea00011dbe00 R14: 0000000000001000 R15: ffff888022067818
FS: 00007f0b77c69700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c321000 CR3: 0000000020b16000 CR4: 0000000000350ee0
Call Trace:
copy_page_from_iter+0xe3/0x180
blk_rq_map_user_iov+0xb0c/0x1650
blk_rq_map_user_io+0x1ee/0x220
sg_common_write.constprop.0+0xd84/0x15e0
sg_write.part.0+0x706/0xb20
sg_write+0x88/0xe0
vfs_write+0x358/0xe40
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f0b7a6f3b19
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:00007f0b77c69188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0b7a806f60 RCX: 00007f0b7a6f3b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00007f0b7a74df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe837b0faf R14: 00007f0b77c69300 R15: 0000000000022000
irq event stamp: 15615
hardirqs last enabled at (15689): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (15886): [] sysvec_apic_timer_interrupt+0xf/0xc0
softirqs last enabled at (6952): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (6855): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
audit: type=1326 audit(1671357004.072:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4998 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7ff754962b19 code=0x0
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 5000 Comm: syz-executor.1 Tainted: G W 6.1.0-next-20221214 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0x8f/0xb7
should_fail_ex.cold+0x5/0xa
_copy_from_user+0x30/0x1f0
vcs_write+0x2b3/0xba0
vfs_write+0x358/0xe40
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7ff560c03b19
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:00007ff55e179188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff560d16f60 RCX: 00007ff560c03b19
RDX: 0000000000000004 RSI: 00000000200003c0 RDI: 0000000000000003
RBP: 00007ff55e1791d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff7f74a2af R14: 00007ff55e179300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 5023 Comm: syz-executor.1 Tainted: G W 6.1.0-next-20221214 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0x8f/0xb7
should_fail_ex.cold+0x5/0xa
_copy_to_user+0x30/0x1c0
simple_read_from_buffer+0xd0/0x170
proc_fail_nth_read+0x19c/0x230
vfs_read+0x2e1/0x9f0
ksys_read+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7ff560bb669c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48
RSP: 002b:00007ff55e179170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007ff560bb669c
RDX: 000000000000000f RSI: 00007ff55e1791e0 RDI: 0000000000000004
RBP: 00007ff55e1791d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff7f74a2af R14: 00007ff55e179300 R15: 0000000000022000
audit: type=1326 audit(1671357004.904:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4998 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7ff754962b19 code=0x0