name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
fail_dump lib/fault-inject.c:73 [inline]
should_fail_ex+0x40c/0x560 lib/fault-inject.c:174
should_failslab+0xa8/0x100 mm/failslab.c:46
slab_pre_alloc_hook mm/slub.c:4539 [inline]
slab_alloc_node mm/slub.c:4897 [inline]
__do_kmalloc_node mm/slub.c:5333 [inline]
__kmalloc_noprof+0xfe/0x720 mm/slub.c:5359
_kmalloc_noprof include/linux/slab.h:992 [inline]
_kzalloc_noprof include/linux/slab.h:1309 [inline]
trace_probe_init+0x66/0x400 kernel/trace/trace_probe.c:2194
alloc_trace_uprobe+0xb0/0x2a0 kernel/trace/trace_uprobe.c:351
__trace_uprobe_create+0x9b5/0xe40 kernel/trace/trace_uprobe.c:688
trace_probe_create+0xce/0x130 kernel/trace/trace_probe.c:2371
dyn_event_create+0x4f/0x70 kernel/trace/trace_dynevent.c:128
create_or_delete_trace_uprobe+0x65/0xa0 kernel/trace/trace_uprobe.c:739
trace_parse_run_command+0x1f3/0x380 kernel/trace/trace.c:9565
vfs_write+0x296/0xba0 fs/read_write.c:685
ksys_write+0x150/0x270 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f365839df99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36547f4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3658625fa0 RCX: 00007f365839df99
RDX: 000000000000000f RSI: 0000200000000500 RDI: 0000000000000004
RBP: 00007f36547f5050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f3658626038 R14: 00007f3658625fa0 R15: 00007ffdb065bdc8
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:path_put+0x24/0x60 fs/namei.c:722
Code: 90 90 90 90 90 90 f3 0f 1e fa 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 c7 fc 7a ff 48 8d 7b 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 80 2d ea ff 48 8b 7b 08 e8 37 88 03 00 48
RSP: 0018:ffffc9000f58f9c8 EFLAGS: 00010203
RAX: 0000000000000008 RBX: 000000000000003c RCX: ffff888000e6a540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000044
RBP: ffffc9000f58fb50 R08: ffffffff9a7e2db7 R09: 0000000000000000
R10: ffffffff9a7e2da0 R11: fffffbfff34fc5b7 R12: fffffffffffffff4
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f36547f56c0(0000) GS:ffff88808c543000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdb065c0a8 CR3: 000000003ee9b000 CR4: 0000000000352ef0
Call Trace:
free_trace_uprobe kernel/trace/trace_uprobe.c:374 [inline]
__free_free_trace_uprobe kernel/trace/trace_uprobe.c:536 [inline]
__trace_uprobe_create+0x53c/0xe40 kernel/trace/trace_uprobe.c:725
trace_probe_create+0xce/0x130 kernel/trace/trace_probe.c:2371
dyn_event_create+0x4f/0x70 kernel/trace/trace_dynevent.c:128
create_or_delete_trace_uprobe+0x65/0xa0 kernel/trace/trace_uprobe.c:739
trace_parse_run_command+0x1f3/0x380 kernel/trace/trace.c:9565
vfs_write+0x296/0xba0 fs/read_write.c:685
ksys_write+0x150/0x270 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f365839df99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36547f4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3658625fa0 RCX: 00007f365839df99
RDX: 000000000000000f RSI: 0000200000000500 RDI: 0000000000000004
RBP: 00007f36547f5050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f3658626038 R14: 00007f3658625fa0 R15: 00007ffdb065bdc8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:path_put+0x24/0x60 fs/namei.c:722
Code: 90 90 90 90 90 90 f3 0f 1e fa 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 c7 fc 7a ff 48 8d 7b 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 80 2d ea ff 48 8b 7b 08 e8 37 88 03 00 48
RSP: 0018:ffffc9000f58f9c8 EFLAGS: 00010203
RAX: 0000000000000008 RBX: 000000000000003c RCX: ffff888000e6a540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000044
RBP: ffffc9000f58fb50 R08: ffffffff9a7e2db7 R09: 0000000000000000
R10: ffffffff9a7e2da0 R11: fffffbfff34fc5b7 R12: fffffffffffffff4
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f36547f56c0(0000) GS:ffff88808c543000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1aae9ced20 CR3: 000000003ee9b000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: f3 0f 1e fa endbr64
a: 41 56 push %r14
c: 53 push %rbx
d: 48 89 fb mov %rdi,%rbx
10: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
17: fc ff df
1a: e8 c7 fc 7a ff call 0xff7afce6
1f: 48 8d 7b 08 lea 0x8(%rbx),%rdi
23: 48 89 f8 mov %rdi,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
2f: 74 05 je 0x36
31: e8 80 2d ea ff call 0xffea2db6
36: 48 8b 7b 08 mov 0x8(%rbx),%rdi
3a: e8 37 88 03 00 call 0x38876
3f: 48 rex.W