general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 5716 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:ffff88803fd17e90 EFLAGS: 00010213
RAX: dffffc0000000000 RBX: ffff88800b681ac0 RCX: ffffc90005bfd000
RDX: 0000000000000001 RSI: ffffffff81f56989 RDI: 000000000000000c
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff86a06817
R10: fffffbfff0d40d02 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88800b682348 R15: ffff88800b682c10
FS: 00007f33e5d07700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000019fdc000 CR4: 0000000000350ef0
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: 0033:0x7f33e8791b19
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:00007f33e5d07188 EFLAGS: 00000246 ORIG_RAX: 00000000000000fb
RAX: ffffffffffffffda RBX: 00007f33e88a4f60 RCX: 00007f33e8791b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f33e87ebf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0addd9bf R14: 00007f33e5d07300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
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:ffff88803fd17e90 EFLAGS: 00010213
RAX: dffffc0000000000 RBX: ffff88800b681ac0 RCX: ffffc90005bfd000
RDX: 0000000000000001 RSI: ffffffff81f56989 RDI: 000000000000000c
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff86a06817
R10: fffffbfff0d40d02 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88800b682348 R15: ffff88800b682c10
FS: 00007f33e5d07700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000019fdc000 CR4: 0000000000350ef0
note: syz-executor.4[5716] exited with preempt_count 1
BUG: sleeping function called from invalid context at include/linux/percpu-rwsem.h:49
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5716, name: syz-executor.4
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 0 PID: 5716 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: 0033:0x7f33e8791b19
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:00007f33e5d07188 EFLAGS: 00000246 ORIG_RAX: 00000000000000fb
RAX: ffffffffffffffda RBX: 00007f33e88a4f60 RCX: 00007f33e8791b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f33e87ebf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0addd9bf R14: 00007f33e5d07300 R15: 0000000000022000
------------[ cut here ]------------
Voluntary context switch within RCU read-side critical section!
WARNING: CPU: 0 PID: 5716 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0xef4/0x1a80 kernel/rcu/tree_plugin.h:318
Modules linked in:
CPU: 0 PID: 5716 Comm: syz-executor.4 Tainted: G D W 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:rcu_note_context_switch+0xef4/0x1a80 kernel/rcu/tree_plugin.h:318
Code: 01 e8 73 7d c7 02 49 c7 c1 4c 00 8c 85 4c 8b 44 24 08 e9 df fc ff ff 48 c7 c7 40 24 68 84 c6 05 ab f8 58 04 01 e8 b6 37 c7 02 <0f> 0b e9 06 f2 ff ff 4c 89 cf e8 cd a6 43 00 e9 87 f1 ff ff e8 c3
RSP: 0018:ffff88803fd17b18 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff88806ce38800 RCX: 0000000000000000
RDX: ffff888040f51ac0 RSI: ffffffff812b2f98 RDI: ffffed1007fa2f55
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff812ac99c R11: 0000000000000000 R12: ffff888040f51ac0
R13: ffff888040f51ac0 R14: ffff888040f51ac0 R15: ffff888040f51ac0
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffb8 CR3: 0000000019fdc000 CR4: 0000000000350ef0
Call Trace:
__schedule+0x1bb/0x2160 kernel/sched/core.c:6193
schedule+0xd2/0x260 kernel/sched/core.c:6369
rwsem_down_read_slowpath+0x4f1/0xa10 kernel/locking/rwsem.c:1032
__down_read_common kernel/locking/rwsem.c:1214 [inline]
__down_read kernel/locking/rwsem.c:1223 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0xa02/0x2960 kernel/exit.c:819
rewind_stack_do_exit+0x17/0x17 arch/x86/entry/entry_64.S:1439
RIP: 0033:0x7f33e8791b19
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:00007f33e5d07188 EFLAGS: 00000246 ORIG_RAX: 00000000000000fb
RAX: ffffffffffffffda RBX: 00007f33e88a4f60 RCX: 00007f33e8791b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f33e87ebf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0addd9bf R14: 00007f33e5d07300 R15: 0000000000022000
irq event stamp: 4991
hardirqs last enabled at (4991): [] cond_local_irq_enable.isra.0+0xe/0x10 arch/x86/kernel/traps.c:79
hardirqs last disabled at (4990): [] exc_general_protection+0x27/0x2f0 arch/x86/kernel/traps.c:562
softirqs last enabled at (4862): [] fpu_clone+0x312/0xa20 arch/x86/kernel/fpu/core.c:524
softirqs last disabled at (4860): [] fpu_clone+0x281/0xa20 arch/x86/kernel/fpu/core.c:498
---[ end trace 0000000000000000 ]---
----------------
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