__x64_sys_preadv+0x233/0x310
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
WARNING: CPU: 1 PID: 4519 at lib/iov_iter.c:629 _copy_from_iter+0x2b2/0x1140
RIP: 0033:0x7f0f47be6b19
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
Modules linked in:
RSP: 002b:00007f0f4515c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007f0f47cf9f60 RCX: 00007f0f47be6b19
RDX: 0000000000000001 RSI: 0000000020001140 RDI: 0000000000000004
RBP: 00007f0f4515c1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcd29c62cf R14: 00007f0f4515c300 R15: 0000000000022000
CPU: 1 PID: 4519 Comm: syz-executor.2 Not tainted 6.2.0-rc5-next-20230127 #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 c2 55 32 02 e8 29 04 36 ff be 79 02 00 00 48 c7 c7 40 c4 9e 84 e8 a8 b2 59 ff e9 51 fe ff ff e8 0e 04 36 ff <0f> 0b 45 31 f6 eb 87 e8 02 04 36 ff 31 ff 89 ee e8 69 ff 35 ff 40
RSP: 0018:ffff888044fbf608 EFLAGS: 00010216
RAX: 0000000000000e0b RBX: 0000000000000000 RCX: ffffc900021f8000
RDX: 0000000000040000 RSI: ffffffff82155922 RDI: 0000000000000001
RBP: 0000000000000390 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888044fbf838 R14: 0000000000000390 R15: ffff888044fbf838
FS: 00007f3ca7812700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555564a8c58 CR3: 000000000cbe0000 CR4: 0000000000350ee0
Call Trace:
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+0x2cf/0xdc0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 4530 Comm: syz-executor.1 Not tainted 6.2.0-rc5-next-20230127 #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
should_failslab+0x9/0x20
__kmem_cache_alloc_node+0x5b/0x310
__kmalloc_node+0x45/0xb0
kvmalloc_node+0xaa/0x200
seq_read_iter+0x820/0x1300
seq_read+0x171/0x210
do_iter_read+0x4f1/0x750
vfs_readv+0xe5/0x160
__x64_sys_preadv+0x233/0x310
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f0f47be6b19
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:00007f0f4515c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007f0f47cf9f60 RCX: 00007f0f47be6b19
RDX: 0000000000000001 RSI: 0000000020001140 RDI: 0000000000000004
RBP: 00007f0f4515c1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcd29c62cf R14: 00007f0f4515c300 R15: 0000000000022000
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f3caa29cb19
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:00007f3ca7812188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3caa3aff60 RCX: 00007f3caa29cb19
RDX: 000000000000002b RSI: 0000000020000380 RDI: 0000000000000007
RBP: 00007f3caa2f6f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd17921adf R14: 00007f3ca7812300 R15: 0000000000022000
irq event stamp: 39761
hardirqs last enabled at (40243): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (40704): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (6610): [] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (6523): [] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4555 Comm: syz-executor.1 Tainted: G W 6.2.0-rc5-next-20230127 #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
copyout+0x19/0x120
_copy_to_iter+0x5cc/0x13f0
seq_read_iter+0xdb2/0x1300
seq_read+0x171/0x210
do_iter_read+0x4f1/0x750
vfs_readv+0xe5/0x160
__x64_sys_preadv+0x233/0x310
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f0f47be6b19
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:00007f0f4515c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007f0f47cf9f60 RCX: 00007f0f47be6b19
RDX: 0000000000000001 RSI: 0000000020001140 RDI: 0000000000000004
RBP: 00007f0f4515c1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcd29c62cf R14: 00007f0f4515c300 R15: 0000000000022000
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
program syz-executor.2 not setting count and/or reply_len properly
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_io_error: 86 callbacks suppressed
Buffer I/O error on dev loop5, logical block 10, lost async page write