syzbot

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DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 1 PID: 6037 at kernel/locking/lockdep.c:232 hlock_class kernel/locking/lockdep.c:232 [inline]
WARNING: CPU: 1 PID: 6037 at kernel/locking/lockdep.c:232 check_wait_context kernel/locking/lockdep.c:4850 [inline]
WARNING: CPU: 1 PID: 6037 at kernel/locking/lockdep.c:232 __lock_acquire+0x564/0x2100 kernel/locking/lockdep.c:5176
Modules linked in:
CPU: 1 UID: 0 PID: 6037 Comm: syz.4.18 Not tainted 6.12.0-syzkaller-01782-gbf9aa14fc523 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:232 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4850 [inline]
RIP: 0010:__lock_acquire+0x564/0x2100 kernel/locking/lockdep.c:5176
Code: 00 00 83 3d 91 5f ad 0e 00 75 23 90 48 c7 c7 40 ce 0a 8c 48 c7 c6 40 d1 0a 8c e8 27 61 e5 ff 48 ba 00 00 00 00 00 fc ff df 90 <0f> 0b 90 90 90 31 db 48 81 c3 c4 00 00 00 48 89 d8 48 c1 e8 03 0f
RSP: 0018:ffffc900044172f0 EFLAGS: 00010046
RAX: b48dc8977d551c00 RBX: 0000000000000f98 RCX: 0000000000080000
RDX: dffffc0000000000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 00000000000c0f98 R08: ffffffff8155e432 R09: fffffbfff1cfa88c
R10: dffffc0000000000 R11: fffffbfff1cfa88c R12: ffff8880257da8c4
R13: 0000000000000000 R14: 1ffff11004afb520 R15: ffff8880257da900
FS:  00007fc58a9686c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3140eff8 CR3: 00000000321ce000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
 raw_spin_rq_lock kernel/sched/sched.h:1514 [inline]
 rq_lock kernel/sched/sched.h:1813 [inline]
 __schedule+0x35a/0x4c30 kernel/sched/core.c:6680
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:srso_alias_return_thunk+0x0/0xfbef5 arch/x86/lib/retpoline.S:181
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8d 64 24 08 c3 cc <e8> f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 0018:ffffc90004417938 EFLAGS: 00000256
RAX: ffffc90004417d01 RBX: 0000000000000010 RCX: ffffffff898c097a
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc90004417d50
RBP: ffffc90004417d50 R08: ffffc90004417d5f R09: 1ffff92000882fab
R10: dffffc0000000000 R11: fffff52000882fac R12: 1ffff92000882f3b
R13: ffffc900044179c0 R14: 0000000000000000 R15: 1ffff92000882f00
 __asan_memset+0x23/0x50 mm/kasan/shadow.c:84
 __copy_msghdr net/socket.c:2499 [inline]
 copy_msghdr_from_user+0x4ca/0x680 net/socket.c:2514
 recvmsg_copy_msghdr net/socket.c:2767 [inline]
 ___sys_recvmsg net/socket.c:2839 [inline]
 do_recvmmsg+0x3bd/0xab0 net/socket.c:2938
 __sys_recvmmsg net/socket.c:3012 [inline]
 __do_sys_recvmmsg net/socket.c:3035 [inline]
 __se_sys_recvmmsg net/socket.c:3028 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3028
 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: 0033:0x7fc589b7e819
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:00007fc58a968038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fc589d36080 RCX: 00007fc589b7e819
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000009
RBP: 00007fc589bf175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc589d36080 R15: 00007ffe8f6e9488
 </TASK>
----------------
Code disassembly (best guess):
   0:	cc                   	int3
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
  16:	cc                   	int3
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	cc                   	int3
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	cc                   	int3
  21:	cc                   	int3
  22:	cc                   	int3
  23:	48 8d 64 24 08       	lea    0x8(%rsp),%rsp
  28:	c3                   	ret
  29:	cc                   	int3
* 2a:	e8 f4 ff ff ff       	call   0x23 <-- trapping instruction
  2f:	0f 0b                	ud2
  31:	cc                   	int3
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3