FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5350 Comm: syz.0.0 Not tainted 6.17.0-rc1-syzkaller-00211-g90d970cade8e #0 PREEMPT(full)
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_lvl+0x189/0x250 lib/dump_stack.c:120
fail_dump lib/fault-inject.c:73 [inline]
should_fail_ex+0x414/0x560 lib/fault-inject.c:174
should_failslab+0xa8/0x100 mm/failslab.c:46
slab_pre_alloc_hook mm/slub.c:4133 [inline]
slab_alloc_node mm/slub.c:4209 [inline]
kmem_cache_alloc_noprof+0x73/0x3c0 mm/slub.c:4236
p9_tag_alloc net/9p/client.c:281 [inline]
p9_client_prepare_req+0x171/0xeb0 net/9p/client.c:644
p9_client_rpc+0x188/0xa70 net/9p/client.c:691
p9_client_write+0x33b/0x740 net/9p/client.c:1648
v9fs_issue_write+0xdd/0x180 fs/9p/vfs_addr.c:59
netfs_do_issue_write fs/netfs/write_issue.c:239 [inline]
netfs_issue_write fs/netfs/write_issue.c:269 [inline]
netfs_end_issue_write+0x180/0x410 fs/netfs/write_issue.c:541
netfs_unbuffered_write+0x20a/0x240 fs/netfs/write_issue.c:731
netfs_unbuffered_write_iter_locked+0x42f/0x6f0 fs/netfs/direct_write.c:87
netfs_unbuffered_write_iter+0x4c4/0x660 fs/netfs/direct_write.c:177
iter_file_splice_write+0x9c6/0x10b0 fs/splice.c:738
do_splice_from fs/splice.c:935 [inline]
direct_splice_actor+0x101/0x160 fs/splice.c:1158
splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1102
do_splice_direct_actor fs/splice.c:1201 [inline]
do_splice_direct+0x181/0x270 fs/splice.c:1227
do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
__do_sys_sendfile64 fs/read_write.c:1431 [inline]
__se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb1ee78ebe9
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:00007fb1ef59d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fb1ee9b5fa0 RCX: 00007fb1ee78ebe9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007
RBP: 00007fb1ef59d090 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fb1ee9b6038 R14: 00007fb1ee9b5fa0 R15: 00007ffc2461e578
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 5350 Comm: syz.0.0 Not tainted 6.17.0-rc1-syzkaller-00211-g90d970cade8e #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:pipe_buf_release include/linux/pipe_fs_i.h:282 [inline]
RIP: 0010:iter_file_splice_write+0xb2a/0x10b0 fs/splice.c:754
Code: 00 74 08 4c 89 f7 e8 65 24 e0 ff 49 8b 1e 49 c7 06 00 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df <42> 80 3c 30 00 44 8b 64 24 04 74 08 48 89 df e8 32 24 e0 ff 4c 8b
RSP: 0018:ffffc9000d5f7820 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888000e92440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 7ffffffffffffffa
RBP: ffffc9000d5f7a30 R08: ffff8880446100df R09: 1ffff110088c201b
R10: dffffc0000000000 R11: ffffffff8202d2f0 R12: dffffc0000000000
R13: 7ffffffffffffffa R14: dffffc0000000000 R15: ffff888043d9a828
FS: 00007fb1ef59d6c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb1ee988558 CR3: 00000000431b9000 CR4: 0000000000352ef0
Call Trace:
do_splice_from fs/splice.c:935 [inline]
direct_splice_actor+0x101/0x160 fs/splice.c:1158
splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1102
do_splice_direct_actor fs/splice.c:1201 [inline]
do_splice_direct+0x181/0x270 fs/splice.c:1227
do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
__do_sys_sendfile64 fs/read_write.c:1431 [inline]
__se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb1ee78ebe9
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:00007fb1ef59d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fb1ee9b5fa0 RCX: 00007fb1ee78ebe9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007
RBP: 00007fb1ef59d090 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fb1ee9b6038 R14: 00007fb1ee9b5fa0 R15: 00007ffc2461e578
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pipe_buf_release include/linux/pipe_fs_i.h:282 [inline]
RIP: 0010:iter_file_splice_write+0xb2a/0x10b0 fs/splice.c:754
Code: 00 74 08 4c 89 f7 e8 65 24 e0 ff 49 8b 1e 49 c7 06 00 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df <42> 80 3c 30 00 44 8b 64 24 04 74 08 48 89 df e8 32 24 e0 ff 4c 8b
RSP: 0018:ffffc9000d5f7820 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888000e92440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 7ffffffffffffffa
RBP: ffffc9000d5f7a30 R08: ffff8880446100df R09: 1ffff110088c201b
R10: dffffc0000000000 R11: ffffffff8202d2f0 R12: dffffc0000000000
R13: 7ffffffffffffffa R14: dffffc0000000000 R15: ffff888043d9a828
FS: 00007fb1ef59d6c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc57744a492 CR3: 00000000431b9000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
0: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1)
4: 89 f7 mov %esi,%edi
6: e8 65 24 e0 ff call 0xffe02470
b: 49 8b 1e mov (%r14),%rbx
e: 49 c7 06 00 00 00 00 movq $0x0,(%r14)
15: 48 83 c3 08 add $0x8,%rbx
19: 48 89 d8 mov %rbx,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
27: fc ff df
* 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
2f: 44 8b 64 24 04 mov 0x4(%rsp),%r12d
34: 74 08 je 0x3e
36: 48 89 df mov %rbx,%rdi
39: e8 32 24 e0 ff call 0xffe02470
3e: 4c rex.WR
3f: 8b .byte 0x8b