sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.6 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4009 at lib/iov_iter.c:376 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 1 PID: 4009 Comm: syz-executor.6 Not tainted 6.3.0-rc3-next-20230327 #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 46 34 02 e8 a9 89 36 ff be 7c 01 00 00 48 c7 c7 60 c4 9e 84 e8 d8 7e 5a ff e9 51 fe ff ff e8 8e 89 36 ff <0f> 0b 45 31 f6 eb 87 e8 82 89 36 ff 31 ff 89 ee e8 b9 84 36 ff 40
RSP: 0018:ffff888043207608 EFLAGS: 00010212
RAX: 0000000000003fea RBX: 0000000000000000 RCX: ffffc9000661a000
RDX: 0000000000040000 RSI: ffffffff8214ff52 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffff888043207838 R14: 0000000000001000 R15: ffff888043207838
FS: 00007f8e1c1d6700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd6862e2000 CR3: 0000000019c44000 CR4: 0000000000350ee0
Call Trace:
copy_page_from_iter+0xe3/0x180
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: 0033:0x7f8e1ec60b19
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:00007f8e1c1d6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8e1ed73f60 RCX: 00007f8e1ec60b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007f8e1ecbaf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd0617a6af R14: 00007f8e1c1d6300 R15: 0000000000022000
irq event stamp: 4163
hardirqs last enabled at (4189): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (4212): [] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last enabled at (3298): [] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (3137): [] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4018 comm=syz-executor.6
audit: type=1400 audit(1679983773.751:12): avc: denied { read } for pid=4008 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
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.6 not setting count and/or reply_len properly
loop0: detected capacity change from 0 to 40
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4018 comm=syz-executor.6
syz-executor.0: attempt to access beyond end of device
loop0: rw=2049, sector=40, nr_sectors = 4 limit=40
Buffer I/O error on dev loop0, logical block 10, lost async page write
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.6 not setting count and/or reply_len properly
general protection fault, probably for non-canonical address 0xdffffc0004000020: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000020000100-0x0000000020000107]
CPU: 1 PID: 4048 Comm: syz-executor.3 Tainted: G W 6.3.0-rc3-next-20230327 #1
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4052 comm=syz-executor.6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:do_iter_read+0x481/0x750
Code: 00 0f 85 52 02 00 00 4d 8b 7c 24 28 e8 48 2c c6 ff 48 8b 44 24 18 80 38 00 0f 85 1c 02 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ef 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00
RSP: 0018:ffff88804489fc70 EFLAGS: 00010212
RAX: 0000000020000100 RBX: ffff88804489fd58 RCX: ffffc90011e76000
RDX: 0000000004000020 RSI: ffffffff81855c98 RDI: 0000000000000007
RBP: 0000000000000048 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000048 R11: 0000000000000001 R12: ffff888013a1aa00
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff848cb840
FS: 00007ff3a7a06700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd06a002280 CR3: 0000000041392000 CR4: 0000000000350ee0
Call Trace:
vfs_readv+0xe5/0x160
do_readv+0x133/0x300
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7ff3aa4b1b19
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:00007ff3a7a06188 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00007ff3aa5c5020 RCX: 00007ff3aa4b1b19
RDX: 0000000000000001 RSI: 0000000020000180 RDI: 0000000000000005
RBP: 00007ff3aa50bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc8c9b384f R14: 00007ff3a7a06300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_iter_read+0x481/0x750
Code: 00 0f 85 52 02 00 00 4d 8b 7c 24 28 e8 48 2c c6 ff 48 8b 44 24 18 80 38 00 0f 85 1c 02 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ef 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00
RSP: 0018:ffff88804489fc70 EFLAGS: 00010212
RAX: 0000000020000100 RBX: ffff88804489fd58 RCX: ffffc90011e76000
RDX: 0000000004000020 RSI: ffffffff81855c98 RDI: 0000000000000007
RBP: 0000000000000048 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000048 R11: 0000000000000001 R12: ffff888013a1aa00
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff848cb840
FS: 00007ff3a7a06700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd06a002280 CR3: 0000000041392000 CR4: 0000000000350ee0
random: crng reseeded on system resumption
Restarting kernel threads ... done.
random: crng reseeded on system resumption
----------------
Code disassembly (best guess):
0: 00 0f add %cl,(%rdi)
2: 85 52 02 test %edx,0x2(%rdx)
5: 00 00 add %al,(%rax)
7: 4d 8b 7c 24 28 mov 0x28(%r12),%r15
c: e8 48 2c c6 ff callq 0xffc62c59
11: 48 8b 44 24 18 mov 0x18(%rsp),%rax
16: 80 38 00 cmpb $0x0,(%rax)
19: 0f 85 1c 02 00 00 jne 0x23b
1f: 48 8b 43 18 mov 0x18(%rbx),%rax
23: 48 89 c2 mov %rax,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 42 80 3c 32 00 cmpb $0x0,(%rdx,%r14,1) <-- trapping instruction
2f: 0f 85 ef 01 00 00 jne 0x224
35: 48 8b 4c 24 20 mov 0x20(%rsp),%rcx
3a: 48 8b 30 mov (%rax),%rsi
3d: 80 39 00 cmpb $0x0,(%rcx)