netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 15608 Comm: syz-executor.4 Not tainted 5.16.0-rc5-next-20211217 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:set_task_ioprio+0x2de/0x6a0 block/blk-ioc.c:289
Code: 4c 8b ab 50 11 00 00 4d 85 ed 0f 84 9b 01 00 00 e8 97 c6 4d ff 49 8d 7d 0c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 63
RSP: 0018:ffff888042fe7e90 EFLAGS: 00010213
RAX: dffffc0000000000 RBX: ffff88800f2a0000 RCX: ffffc90007e0a000
RDX: 0000000000000001 RSI: ffffffff81f56989 RDI: 000000000000000c
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff86a06817
R10: fffffbfff0d40d02 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88800f2a0888 R15: ffff88800f2a1150
FS: 00007fa2b4ff9700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
loop7: detected capacity change from 0 to 264192
CR2: 00007fa2b7b97018 CR3: 000000004676a000 CR4: 0000000000350ee0
Call Trace:
__do_sys_ioprio_set+0x588/0xad0 block/ioprio.c:124
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fa2b7a83b19
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:00007fa2b4ff9188 EFLAGS: 00000246 ORIG_RAX: 00000000000000fb
RAX: ffffffffffffffda RBX: 00007fa2b7b96f60 RCX: 00007fa2b7a83b19
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fa2b7addf6d R08: 0000000000000000 R09: 0000000000000000
CPU: 0 PID: 15618 Comm: syz-executor.0 Not tainted 5.16.0-rc5-next-20211217 #1
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
R13: 00007ffe3ef1e42f R14: 00007fa2b4ff9300 R15: 0000000000022000
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106
Modules linked in:
fail_dump lib/fault-inject.c:52 [inline]
should_fail.cold+0x5/0xa lib/fault-inject.c:146
_copy_to_user+0x2e/0x150 lib/usercopy.c:29
---[ end trace 0000000000000000 ]---
copy_to_user include/linux/uaccess.h:200 [inline]
simple_read_from_buffer+0xcc/0x160 fs/libfs.c:768
RIP: 0010:set_task_ioprio+0x2de/0x6a0 block/blk-ioc.c:289
proc_fail_nth_read+0x194/0x220 fs/proc/base.c:1426
Code: 4c 8b ab 50 11 00 00 4d 85 ed 0f 84 9b 01 00 00 e8 97 c6 4d ff 49 8d 7d 0c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 63
RSP: 0018:ffff888042fe7e90 EFLAGS: 00010213
vfs_read+0x1b6/0x5f0 fs/read_write.c:479
RAX: dffffc0000000000 RBX: ffff88800f2a0000 RCX: ffffc90007e0a000
ksys_read+0x12d/0x250 fs/read_write.c:619
RDX: 0000000000000001 RSI: ffffffff81f56989 RDI: 000000000000000c
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff86a06817
R10: fffffbfff0d40d02 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88800f2a0888 R15: ffff88800f2a1150
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
FS: 00007fa2b4ff9700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f6f0fff469c
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
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:00007f6f0d5b7170 EFLAGS: 00000246
CR2: 00007fa2b7b97018 CR3: 000000004676a000 CR4: 0000000000350ee0
ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f6f0fff469c
RDX: 000000000000000f RSI: 00007f6f0d5b71e0 RDI: 0000000000000005
note: syz-executor.4[15608] exited with preempt_count 1
RBP: 00007f6f0d5b71d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffc1569bc6f R14: 00007f6f0d5b7300 R15: 0000000000022000
BUG: sleeping function called from invalid context at include/linux/percpu-rwsem.h:49
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 15608, name: syz-executor.4
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 1 PID: 15608 Comm: syz-executor.4 Tainted: G D 5.16.0-rc5-next-20211217 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106
__might_resched.cold+0x222/0x26b kernel/sched/core.c:9583
percpu_down_read include/linux/percpu-rwsem.h:49 [inline]
cgroup_threadgroup_change_begin include/linux/cgroup-defs.h:722 [inline]
exit_signals+0x21/0x8e0 kernel/signal.c:2950
do_exit+0x618/0x2960 kernel/exit.c:788
rewind_stack_do_exit+0x17/0x17 arch/x86/entry/entry_64.S:1439
RIP: 0033:0x7fa2b7a83b19
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:00007fa2b4ff9188 EFLAGS: 00000246 ORIG_RAX: 00000000000000fb
RAX: ffffffffffffffda RBX: 00007fa2b7b96f60 RCX: 00007fa2b7a83b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fa2b7addf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3ef1e42f R14: 00007fa2b4ff9300 R15: 0000000000022000
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
loop7: detected capacity change from 0 to 264192
----------------
Code disassembly (best guess):
0: 4c 8b ab 50 11 00 00 mov 0x1150(%rbx),%r13
7: 4d 85 ed test %r13,%r13
a: 0f 84 9b 01 00 00 je 0x1ab
10: e8 97 c6 4d ff callq 0xff4dc6ac
15: 49 8d 7d 0c lea 0xc(%r13),%rdi
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction
2e: 48 89 f8 mov %rdi,%rax
31: 83 e0 07 and $0x7,%eax
34: 83 c0 01 add $0x1,%eax
37: 38 d0 cmp %dl,%al
39: 7c 08 jl 0x43
3b: 84 d2 test %dl,%dl
3d: 0f .byte 0xf
3e: 85 .byte 0x85
3f: 63 .byte 0x63