------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=2001 set at [] futex_wait_setup+0x3c4/0x590 kernel/futex/waitwake.c:694 WARNING: kernel/sched/core.c:9191 at __might_sleep+0x92/0xf0 kernel/sched/core.c:9187, CPU#1: syz.2.9/5744 Modules linked in: CPU: 1 UID: 0 PID: 5744 Comm: syz.2.9 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__might_sleep+0xac/0xf0 kernel/sched/core.c:9187 Code: 00 00 48 89 3c 24 41 89 f5 4c 8d 35 8e ca e6 0f 43 80 3c 3c 00 74 08 48 89 df e8 0f 4c a2 00 48 8b 0b 4c 89 f7 89 ee 48 89 ca <67> 48 0f b9 3a 44 89 ee 48 8b 3c 24 eb b5 44 89 f1 80 e1 07 80 c1 RSP: 0018:ffffc90000a08c08 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88802dae5730 RCX: ffffffff81bb7af4 RDX: ffffffff81bb7af4 RSI: 0000000000002001 RDI: ffffffff917d83c0 RBP: 0000000000002001 R08: 0000000000000100 R09: 1ffffffff22f508f R10: dffffc0000000000 R11: fffffbfff22f5090 R12: 1ffff11005b5cae6 R13: 00000000000011d1 R14: ffffffff917d83c0 R15: dffffc0000000000 FS: 00007fb22e4dd6c0(0000) GS:ffff888123bbb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005567388b6150 CR3: 00000000798a4000 CR4: 00000000003526f0 Call Trace: __cancel_work_sync+0x6d/0x110 kernel/workqueue.c:4561 mmc_free_host+0x19/0x40 drivers/mmc/core/host.c:700 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:plist_check_list+0x3f/0x310 lib/plist.c:46 Code: 00 00 00 fc ff df e8 00 ed e3 f5 48 89 d8 48 c1 e8 03 48 89 44 24 10 42 80 3c 30 00 74 08 48 89 df e8 05 cd 54 f6 48 89 1c 24 <4c> 8b 33 4d 8d 7e 08 4c 89 fd 48 c1 ed 03 48 b8 00 00 00 00 00 fc RSP: 0018:ffffc90004c6f8d0 EFLAGS: 00000246 RAX: 1ffff110056a24d1 RBX: ffff88802b512688 RCX: 0000000000080000 RDX: ffffc900060ea000 RSI: 000000000000024b RDI: 000000000000024c RBP: 0000000000000064 R08: ffff88802dae3e9b R09: 1ffff11005b5c7d3 R10: dffffc0000000000 R11: ffffed1005b5c7d4 R12: ffffc90004c6fab8 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88802b512688 __futex_queue+0xed/0x160 kernel/futex/core.c:872 futex_queue kernel/futex/futex.h:333 [inline] futex_wait_setup+0x424/0x590 kernel/futex/waitwake.c:695 __futex_wait+0x175/0x470 kernel/futex/waitwake.c:717 futex_wait+0x121/0x390 kernel/futex/waitwake.c:750 do_futex+0x3e7/0x4e0 kernel/futex/syscalls.c:133 __do_sys_futex kernel/futex/syscalls.c:210 [inline] __se_sys_futex+0x3a8/0x450 kernel/futex/syscalls.c:191 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb22d59f559 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb22e4dd0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007fb22d825fa8 RCX: 00007fb22d59f559 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb22d825fa8 RBP: 00007fb22d825fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb22d826038 R14: 00007fb22d94f960 R15: 00007fb22d94fa48 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 89 3c 24 mov %rdi,(%rsp) 6: 41 89 f5 mov %esi,%r13d 9: 4c 8d 35 8e ca e6 0f lea 0xfe6ca8e(%rip),%r14 # 0xfe6ca9e 10: 43 80 3c 3c 00 cmpb $0x0,(%r12,%r15,1) 15: 74 08 je 0x1f 17: 48 89 df mov %rbx,%rdi 1a: e8 0f 4c a2 00 call 0xa24c2e 1f: 48 8b 0b mov (%rbx),%rcx 22: 4c 89 f7 mov %r14,%rdi 25: 89 ee mov %ebp,%esi 27: 48 89 ca mov %rcx,%rdx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 44 89 ee mov %r13d,%esi 32: 48 8b 3c 24 mov (%rsp),%rdi 36: eb b5 jmp 0xffffffed 38: 44 89 f1 mov %r14d,%ecx 3b: 80 e1 07 and $0x7,%cl 3e: 80 .byte 0x80 3f: c1 .byte 0xc1