------------[ cut here ]------------
WARNING: CPU: 0 PID: 4555 at lib/iov_iter.c:629 _copy_from_iter+0x2f1/0x1130
Modules linked in:
CPU: 0 PID: 4555 Comm: syz-executor.0 Not tainted 6.1.0-rc7-next-20221202 #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 5a 16 37 ff be 79 02 00 00 48 c7 c7 40 bd 9e 84 e8 b9 94 5a ff e9 13 fe ff ff e8 3f 16 37 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 30 16 37 ff 31 ff 89 ee e8 f7 11
RSP: 0018:ffff888045e4f5e8 EFLAGS: 00010216
RAX: 0000000000000f0b RBX: 0000000000000000 RCX: ffffc90000988000
RDX: 0000000000040000 RSI: ffffffff8211fe11 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000390
R13: ffffea000118b200 R14: 0000000000000390 R15: ffff888045e4f818
FS: 00007f133b97c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04dba44541 CR3: 0000000021476000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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
random: crng reseeded on system resumption
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f133e406b19
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:00007f133b97c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f133e519f60 RCX: 00007f133e406b19
RDX: 000000000000002b RSI: 0000000020000380 RDI: 0000000000000007
RBP: 00007f133e460f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe6f6510f R14: 00007f133b97c300 R15: 0000000000022000
irq event stamp: 8575
hardirqs last enabled at (8615): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (8660): [] sysvec_apic_timer_interrupt+0xf/0xc0
softirqs last enabled at (3234): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (2899): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
loop6: detected capacity change from 0 to 40
Restarting kernel threads ...
FAT-fs (loop6): count of clusters too big (5768190)
FAT-fs (loop6): Can't find a valid FAT filesystem
done.
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.0 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.6 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.3 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.0 not setting count and/or reply_len properly
random: crng reseeded on system resumption
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.6 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.0 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.3 not setting count and/or reply_len properly
random: crng reseeded on system resumption
Restarting kernel threads ... done.
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.3 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.6 not setting count and/or reply_len properly
random: crng reseeded on system resumption
Restarting kernel threads ... done.
loop4: detected capacity change from 0 to 256
loop5: detected capacity change from 0 to 40
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
audit: type=1400 audit(1669981494.636:10): avc: denied { write } for pid=4730 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
syz-executor.5: attempt to access beyond end of device
loop5: rw=2049, sector=40, nr_sectors = 4 limit=40
Buffer I/O error on dev loop5, logical block 10, lost async page write
syz_tun: refused to change device tx_queue_len
loop5: detected capacity change from 0 to 40
device syz_tun entered promiscuous mode
loop4: detected capacity change from 0 to 256
device syz_tun left promiscuous mode
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
syz-executor.5: attempt to access beyond end of device
loop5: rw=2049, sector=40, nr_sectors = 4 limit=40
Buffer I/O error on dev loop5, logical block 10, lost async page write
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
loop5: detected capacity change from 0 to 40
syz-executor.5: attempt to access beyond end of device
loop5: rw=2049, sector=40, nr_sectors = 4 limit=40
Buffer I/O error on dev loop5, logical block 10, lost async page write
syz_tun: refused to change device tx_queue_len
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
syz_tun: refused to change device tx_queue_len
loop5: detected capacity change from 0 to 40
syz_tun: refused to change device tx_queue_len
loop4: detected capacity change from 0 to 256
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
syz_tun: refused to change device tx_queue_len
syz-executor.2 (4785) used greatest stack depth: 23400 bytes left
loop4: detected capacity change from 0 to 256
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
syz_tun: refused to change device tx_queue_len
syz_tun: refused to change device tx_queue_len
syz_tun: refused to change device tx_queue_len
loop4: detected capacity change from 0 to 264192
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop4: detected capacity change from 0 to 264192
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
audit: type=1400 audit(1669981500.854:11): avc: denied { read } for pid=4920 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
loop4: detected capacity change from 0 to 264192
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop4: detected capacity change from 0 to 264192
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)