general protection fault, probably for non-canonical address 0xdffffc0004000018: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x00000000200000c0-0x00000000200000c7]
CPU: 1 PID: 15770 Comm: syz-executor.2 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: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:ffff888043b57c70 EFLAGS: 00010216
RAX: 00000000200000c0 RBX: ffff888043b57d58 RCX: ffffc90000dd2000
RDX: 0000000004000018 RSI: ffffffff81855c98 RDI: 0000000000000007
RBP: 00000000000000e0 R08: 0000000000000007 R09: 0000000000000000
R10: 00000000000000e0 R11: 0000000000000001 R12: ffff888015abfb80
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8491de20
FS: 00007fc0a46fe700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c022000 CR3: 0000000041ee4000 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: 0033:0x7fc0a7188b19
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:00007fc0a46fe188 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00007fc0a729bf60 RCX: 00007fc0a7188b19
RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 00007fc0a71e2f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffaa1bb6df R14: 00007fc0a46fe300 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:ffff888043b57c70 EFLAGS: 00010216
RAX: 00000000200000c0 RBX: ffff888043b57d58 RCX: ffffc90000dd2000
RDX: 0000000004000018 RSI: ffffffff81855c98 RDI: 0000000000000007
RBP: 00000000000000e0 R08: 0000000000000007 R09: 0000000000000000
R10: 00000000000000e0 R11: 0000000000000001 R12: ffff888015abfb80
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8491de20
FS: 00007fc0a46fe700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c022000 CR3: 0000000041ee4000 CR4: 0000000000350ee0
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 15786 Comm: syz-executor.5 Tainted: G D 6.3.0-rc3-next-20230327 #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
_copy_to_user+0x2e/0x150
simple_read_from_buffer+0xd0/0x170
proc_fail_nth_read+0x19c/0x230
vfs_read+0x260/0x940
ksys_read+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f3d77cef69c
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:00007f3d752b2170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3d77cef69c
RDX: 000000000000000f RSI: 00007f3d752b21e0 RDI: 0000000000000005
RBP: 00007f3d752b21d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffe7390ddf R14: 00007f3d752b2300 R15: 0000000000022000
general protection fault, probably for non-canonical address 0xdffffc0004000018: 0000 [#2] PREEMPT SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x00000000200000c0-0x00000000200000c7]
CPU: 0 PID: 15819 Comm: syz-executor.2 Tainted: G D 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: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:ffff8880445a7c70 EFLAGS: 00010216
RAX: 00000000200000c0 RBX: ffff8880445a7d58 RCX: ffffc90001fdb000
RDX: 0000000004000018 RSI: ffffffff81855c98 RDI: 0000000000000007
RBP: 00000000000000e0 R08: 0000000000000007 R09: 0000000000000000
R10: 00000000000000e0 R11: 0000000000000001 R12: ffff888019325680
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8491de20
FS: 00007fc0a46bc700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc0a46bc718 CR3: 0000000041ee4000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
vfs_readv+0xe5/0x160
do_readv+0x133/0x300
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7fc0a7188b19
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:00007fc0a46bc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00007fc0a729c0e0 RCX: 00007fc0a7188b19
RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 00007fc0a71e2f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffaa1bb6df R14: 00007fc0a46bc300 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:ffff888043b57c70 EFLAGS: 00010216
RAX: 00000000200000c0 RBX: ffff888043b57d58 RCX: ffffc90000dd2000
RDX: 0000000004000018 RSI: ffffffff81855c98 RDI: 0000000000000007
RBP: 00000000000000e0 R08: 0000000000000007 R09: 0000000000000000
R10: 00000000000000e0 R11: 0000000000000001 R12: ffff888015abfb80
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8491de20
FS: 00007fc0a46bc700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc0a46bc718 CR3: 0000000041ee4000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
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)