sg_write: data in/out 209/247 bytes for SCSI command 0xc0-- guessing data in;
program syz-executor.4 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13212 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320
Modules linked in:
CPU: 0 PID: 13212 Comm: syz-executor.4 Not tainted 6.5.0-rc4-next-20230804 #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: b2 ff ff 89 c3 e9 1f ff ff ff e8 7a 3d 34 ff be 85 01 00 00 48 c7 c7 60 42 9f 84 e8 09 d5 58 ff e9 13 fe ff ff e8 5f 3d 34 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 50 3d 34 ff 31 ff 89 ee e8 87 38
RSP: 0018:ffff8880414d7608 EFLAGS: 00010216
RAX: 0000000000000e13 RBX: 0000000000000000 RCX: ffffc9000500f000
RDX: 0000000000040000 RSI: ffffffff821881a1 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 00000000000000f7
R13: ffffea00010f1000 R14: 00000000000000f7 R15: ffff8880414d7838
FS: 00007fdc92805700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c524000 CR3: 000000000dd50000 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+0x69e/0xac0
sg_write+0x8d/0xe0
vfs_write+0x2b9/0xda0
ksys_write+0x122/0x250
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7fdc9528fb19
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:00007fdc92805188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdc953a2f60 RCX: 00007fdc9528fb19
RDX: 0000000000000125 RSI: 0000000020000400 RDI: 0000000000000003
RBP: 00007fdc952e9f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff2477583f R14: 00007fdc92805300 R15: 0000000000022000
irq event stamp: 1149
hardirqs last enabled at (1161): [] console_unlock+0x2a8/0x2e0
hardirqs last disabled at (1170): [] console_unlock+0x28d/0x2e0
softirqs last enabled at (962): [] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (941): [] irq_exit_rcu+0x93/0xc0
---[ end trace 0000000000000000 ]---
audit: type=1326 audit(1691400261.500:371): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=13218 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f8f8837ab19 code=0x800000
sg_write: data in/out 219/247 bytes for SCSI command 0xc0-- guessing data in;
program syz-executor.4 not setting count and/or reply_len properly
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 13228 Comm: syz-executor.0 Tainted: G W 6.5.0-rc4-next-20230804 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xc1/0xf0
should_fail_ex+0x4b4/0x5b0
strncpy_from_user+0x38/0x340
getname_flags.part.0+0x95/0x4f0
getname+0x92/0xe0
do_sys_openat2+0xec/0x1d0
__x64_sys_openat+0x143/0x200
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7f1a76609b19
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:00007f1a73b7f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f1a7671cf60 RCX: 00007f1a76609b19
RDX: 00000000000028c0 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f1a73b7f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000160 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcf529c13f R14: 00007f1a73b7f300 R15: 0000000000022000