------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 18797 at kernel/locking/lockdep.c:234 hlock_class kernel/locking/lockdep.c:234 [inline] WARNING: CPU: 0 PID: 18797 at kernel/locking/lockdep.c:234 check_wait_context kernel/locking/lockdep.c:4852 [inline] WARNING: CPU: 0 PID: 18797 at kernel/locking/lockdep.c:234 __lock_acquire+0x564/0x2100 kernel/locking/lockdep.c:5178 Modules linked in: CPU: 0 UID: 0 PID: 18797 Comm: syz.7.2776 Not tainted 6.14.0-rc7-syzkaller-00050-gfc444ada1310 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:hlock_class kernel/locking/lockdep.c:234 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4852 [inline] RIP: 0010:__lock_acquire+0x564/0x2100 kernel/locking/lockdep.c:5178 Code: 00 00 83 3d 61 52 a0 0e 00 75 23 90 48 c7 c7 40 b2 2a 8c 48 c7 c6 40 b5 2a 8c e8 f7 bc e4 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:ffffc90003eff0f0 EFLAGS: 00010046 RAX: d076d52796e63d00 RBX: 0000000000001b20 RCX: 0000000000080000 RDX: dffffc0000000000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: 00000000000c1b20 R08: ffffffff81819e52 R09: fffffbfff1d3a69c R10: dffffc0000000000 R11: fffffbfff1d3a69c R12: ffff8880301b0ad4 R13: 0000000000000005 R14: 1ffff11006036167 R15: ffff8880301b0b38 FS: 00007f5a281276c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2d89ae CR3: 000000005d11a000 CR4: 0000000000350ef0 Call Trace: <TASK> lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 _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:1521 [inline] rq_lock kernel/sched/sched.h:1852 [inline] __schedule+0x357/0x4c90 kernel/sched/core.c:6688 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7087 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:__unix_dgram_recvmsg+0x7b9/0x1320 net/unix/af_unix.c:2469 Code: 8b 44 24 60 42 0f b6 04 30 84 c0 0f 85 d3 07 00 00 44 8b b4 24 20 01 00 00 44 29 f3 48 89 df 4c 89 e6 e8 5a ce 25 f7 4c 39 e3 <73> 0a e8 f0 cb 25 f7 49 89 dc eb 45 48 89 df 4c 89 e6 e8 40 ce 25 RSP: 0018:ffffc90003eff720 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffff8880301b0000 RDX: ffff88804bc5dcf0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003eff8b0 R08: ffffffff8a9c13d6 R09: 1ffffffff28a991f R10: dffffc0000000000 R11: fffffbfff28a9920 R12: 0000000000000000 R13: 1ffff920007dfef4 R14: 0000000000000000 R15: ffff88804bc5dc80 sock_recvmsg_nosec+0x190/0x1d0 net/socket.c:1023 ____sys_recvmsg+0x3cd/0x480 net/socket.c:2791 ___sys_recvmsg net/socket.c:2835 [inline] do_recvmmsg+0x426/0xab0 net/socket.c:2930 __sys_recvmmsg net/socket.c:3004 [inline] __do_sys_recvmmsg net/socket.c:3027 [inline] __se_sys_recvmmsg net/socket.c:3020 [inline] __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3020 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: 0033:0x7f5a2738d169 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:00007f5a28127038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f5a275a6080 RCX: 00007f5a2738d169 RDX: 0000000000010106 RSI: 00004000000000c0 RDI: 0000000000000003 RBP: 00007f5a2740e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5a275a6080 R15: 00007ffcc94661b8 </TASK> ---------------- Code disassembly (best guess): 0: 8b 44 24 60 mov 0x60(%rsp),%eax 4: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax 9: 84 c0 test %al,%al b: 0f 85 d3 07 00 00 jne 0x7e4 11: 44 8b b4 24 20 01 00 mov 0x120(%rsp),%r14d 18: 00 19: 44 29 f3 sub %r14d,%ebx 1c: 48 89 df mov %rbx,%rdi 1f: 4c 89 e6 mov %r12,%rsi 22: e8 5a ce 25 f7 call 0xf725ce81 27: 4c 39 e3 cmp %r12,%rbx * 2a: 73 0a jae 0x36 <-- trapping instruction 2c: e8 f0 cb 25 f7 call 0xf725cc21 31: 49 89 dc mov %rbx,%r12 34: eb 45 jmp 0x7b 36: 48 89 df mov %rbx,%rdi 39: 4c 89 e6 mov %r12,%rsi 3c: e8 .byte 0xe8 3d: 40 ce rex (bad) 3f: 25 .byte 0x25