FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5108 Comm: syz.0.0 Not tainted 6.11.0-syzkaller-10669-g11a299a7933e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
fail_dump lib/fault-inject.c:53 [inline]
should_fail_ex+0x3b0/0x4e0 lib/fault-inject.c:154
should_failslab+0xac/0x100 mm/failslab.c:46
slab_pre_alloc_hook mm/slub.c:4039 [inline]
slab_alloc_node mm/slub.c:4115 [inline]
kmem_cache_alloc_noprof+0x6c/0x2a0 mm/slub.c:4142
lsm_file_alloc security/security.c:734 [inline]
security_file_alloc+0x32/0x310 security/security.c:2853
init_file+0x93/0x1e0 fs/file_table.c:153
alloc_empty_backing_file+0x67/0xe0 fs/file_table.c:274
backing_file_open+0x24/0xa0 fs/backing-file.c:39
ovl_open_realfile+0x1ee/0x350 fs/overlayfs/file.c:51
ovl_real_fdget_meta+0x339/0x3b0 fs/overlayfs/file.c:120
ovl_real_fdget fs/overlayfs/file.c:141 [inline]
ovl_llseek+0x1e7/0x3f0 fs/overlayfs/file.c:202
vfs_llseek fs/read_write.c:382 [inline]
ksys_lseek fs/read_write.c:395 [inline]
__do_sys_lseek fs/read_write.c:406 [inline]
__se_sys_lseek fs/read_write.c:404 [inline]
__x64_sys_lseek+0x150/0x1e0 fs/read_write.c:404
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1c0977df39
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c0a5e0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00007f1c09935f80 RCX: 00007f1c0977df39
RDX: 0000000000000000 RSI: 0000000000010000 RDI: 0000000000000004
RBP: 00007f1c0a5e0090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f1c09935f80 R15: 00007ffe33846ec8
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000022: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000110-0x0000000000000117]
CPU: 0 UID: 0 PID: 5108 Comm: syz.0.0 Not tainted 6.11.0-syzkaller-10669-g11a299a7933e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ovl_llseek+0x2a4/0x3f0 fs/overlayfs/file.c:214
Code: 8d 7c 24 60 e8 ad db e0 fe 48 8b 44 24 60 48 89 44 24 30 48 83 e0 fc 48 89 44 24 20 4c 8d b0 20 01 00 00 4d 89 f7 49 c1 ef 03 <43> 80 3c 27 00 74 08 4c 89 f7 e8 6d dc e0 fe 49 89 1e 48 8b 1c 24
RSP: 0018:ffffc9000306fe00 EFLAGS: 00010207
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8c610080 RDI: 0000000000000001
RBP: ffffc9000306fec8 R08: ffffffff901ce56f R09: 1ffffffff2039cad
R10: dffffc0000000000 R11: fffffbfff2039cae R12: dffffc0000000000
R13: 1ffff11003ec9a94 R14: 0000000000000114 R15: 0000000000000022
FS: 00007f1c0a5e06c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c0990b538 CR3: 000000003fec0000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vfs_llseek fs/read_write.c:382 [inline]
ksys_lseek fs/read_write.c:395 [inline]
__do_sys_lseek fs/read_write.c:406 [inline]
__se_sys_lseek fs/read_write.c:404 [inline]
__x64_sys_lseek+0x150/0x1e0 fs/read_write.c:404
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1c0977df39
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c0a5e0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00007f1c09935f80 RCX: 00007f1c0977df39
RDX: 0000000000000000 RSI: 0000000000010000 RDI: 0000000000000004
RBP: 00007f1c0a5e0090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007f1c09935f80 R15: 00007ffe33846ec8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ovl_llseek+0x2a4/0x3f0 fs/overlayfs/file.c:214
Code: 8d 7c 24 60 e8 ad db e0 fe 48 8b 44 24 60 48 89 44 24 30 48 83 e0 fc 48 89 44 24 20 4c 8d b0 20 01 00 00 4d 89 f7 49 c1 ef 03 <43> 80 3c 27 00 74 08 4c 89 f7 e8 6d dc e0 fe 49 89 1e 48 8b 1c 24
RSP: 0018:ffffc9000306fe00 EFLAGS: 00010207
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8c610080 RDI: 0000000000000001
RBP: ffffc9000306fec8 R08: ffffffff901ce56f R09: 1ffffffff2039cad
R10: dffffc0000000000 R11: fffffbfff2039cae R12: dffffc0000000000
R13: 1ffff11003ec9a94 R14: 0000000000000114 R15: 0000000000000022
FS: 00007f1c0a5e06c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005592b1a8a120 CR3: 000000003fec0000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 8d 7c 24 60 lea 0x60(%rsp),%edi
4: e8 ad db e0 fe call 0xfee0dbb6
9: 48 8b 44 24 60 mov 0x60(%rsp),%rax
e: 48 89 44 24 30 mov %rax,0x30(%rsp)
13: 48 83 e0 fc and $0xfffffffffffffffc,%rax
17: 48 89 44 24 20 mov %rax,0x20(%rsp)
1c: 4c 8d b0 20 01 00 00 lea 0x120(%rax),%r14
23: 4d 89 f7 mov %r14,%r15
26: 49 c1 ef 03 shr $0x3,%r15
* 2a: 43 80 3c 27 00 cmpb $0x0,(%r15,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 f7 mov %r14,%rdi
34: e8 6d dc e0 fe call 0xfee0dca6
39: 49 89 1e mov %rbx,(%r14)
3c: 48 8b 1c 24 mov (%rsp),%rbx