Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 5398 Comm: syz.3.22 Not tainted 6.11.0-rc4-next-20240822-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:rb_erase+0x61f/0xe70 lib/rbtree.c:445
Code: 00 49 8d 5f 10 48 89 d8 48 c1 e8 03 48 89 44 24 18 42 80 3c 28 00 74 08 48 89 df e8 1b c8 44 f6 4c 8b 23 4d 89 e6 49 c1 ee 03 <43> 80 3c 2e 00 74 08 4c 89 e7 e8 02 c8 44 f6 41 f6 04 24 01 48 89
RSP: 0018:ffffc90000007620 EFLAGS: 00010046
RAX: 1ffff11003d907da RBX: ffff88801ec83ed0 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b913f860 RDI: ffff88802a1ca0c8
RBP: ffff88801ec83ec8 R08: ffff88802a1ca237 R09: 1ffff11005439446
R10: dffffc0000000000 R11: ffffed1005439447 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801ec83ec0
FS: 00007f56aa4ca6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2d0179 CR3: 000000001f0f2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
sched_core_dequeue kernel/sched/core.c:283 [inline]
dequeue_task+0x34d/0x550 kernel/sched/core.c:2031
detach_task kernel/sched/fair.c:9368 [inline]
detach_tasks kernel/sched/fair.c:9504 [inline]
sched_balance_rq+0x5d5b/0x8590 kernel/sched/fair.c:11648
sched_balance_domains+0x565/0xa90 kernel/sched/fair.c:12069
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:64 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x3a/0x290 mm/kasan/generic.c:189
Code: f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02 00 00 48 89 fd 48 c1 ed 2f 81 fd fe ff 01 00 0f 86 43 02 00 00 48 89 fb <48> c1 eb 03 49 ba 00 00 00 00 00 fc ff df 4e 8d 1c 13 49 ff c8 4d
RSP: 0018:ffffc90004717590 EFLAGS: 00000202
RAX: 1ffff920008e2e01 RBX: ffff888012b8ec08 RCX: ffffffff8a5a89ea
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888012b8ec08
RBP: 000000000001ffff R08: ffff888012b8ec10 R09: 1ffff11002571d81
R10: dffffc0000000000 R11: ffffed1002571d82 R12: 1ffff920008e2ec0
R13: ffffc900047177c0 R14: ffff888012b8ec08 R15: dffffc0000000000
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
scm_has_secdata include/net/scm.h:124 [inline]
__scm_recv_common include/net/scm.h:178 [inline]
scm_recv_unix+0x7da/0xad0 include/net/scm.h:214
__unix_dgram_recvmsg+0xcdd/0x12f0 net/unix/af_unix.c:2517
sock_recvmsg_nosec+0x18e/0x1d0 net/socket.c:1046
____sys_recvmsg+0x3c0/0x470 net/socket.c:2814
___sys_recvmsg net/socket.c:2858 [inline]
do_recvmmsg+0x464/0xad0 net/socket.c:2952
__sys_recvmmsg net/socket.c:3031 [inline]
__do_sys_recvmmsg net/socket.c:3054 [inline]
__se_sys_recvmmsg net/socket.c:3047 [inline]
__x64_sys_recvmmsg+0x199/0x250 net/socket.c:3047
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: 0033:0x7f56a9779e79
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:00007f56aa4ca038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f56a9916058 RCX: 00007f56a9779e79
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f56a97e7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f56a9916058 R15: 00007fff65783b38
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:rb_erase+0x61f/0xe70 lib/rbtree.c:445
Code: 00 49 8d 5f 10 48 89 d8 48 c1 e8 03 48 89 44 24 18 42 80 3c 28 00 74 08 48 89 df e8 1b c8 44 f6 4c 8b 23 4d 89 e6 49 c1 ee 03 <43> 80 3c 2e 00 74 08 4c 89 e7 e8 02 c8 44 f6 41 f6 04 24 01 48 89
RSP: 0018:ffffc90000007620 EFLAGS: 00010046
RAX: 1ffff11003d907da RBX: ffff88801ec83ed0 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b913f860 RDI: ffff88802a1ca0c8
RBP: ffff88801ec83ec8 R08: ffff88802a1ca237 R09: 1ffff11005439446
R10: dffffc0000000000 R11: ffffed1005439447 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801ec83ec0
FS: 00007f56aa4ca6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2d0179 CR3: 000000001f0f2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 49 8d add %cl,-0x73(%rcx)
3: 5f pop %rdi
4: 10 48 89 adc %cl,-0x77(%rax)
7: d8 48 c1 fmuls -0x3f(%rax)
a: e8 03 48 89 44 call 0x44894812
f: 24 18 and $0x18,%al
11: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
16: 74 08 je 0x20
18: 48 89 df mov %rbx,%rdi
1b: e8 1b c8 44 f6 call 0xf644c83b
20: 4c 8b 23 mov (%rbx),%r12
23: 4d 89 e6 mov %r12,%r14
26: 49 c1 ee 03 shr $0x3,%r14
* 2a: 43 80 3c 2e 00 cmpb $0x0,(%r14,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 e7 mov %r12,%rdi
34: e8 02 c8 44 f6 call 0xf644c83b
39: 41 f6 04 24 01 testb $0x1,(%r12)
3e: 48 rex.W
3f: 89 .byte 0x89