------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=1 set at [] do_wait+0x227/0xce0 kernel/exit.c:1503 WARNING: CPU: 0 PID: 3599 at kernel/sched/core.c:9656 __might_sleep+0x105/0x150 kernel/sched/core.c:9656 Modules linked in: CPU: 0 PID: 3599 Comm: syz-executor.5 Tainted: G W 5.17.0-syzkaller-10753-gbddac7c1e02b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__might_sleep+0x105/0x150 kernel/sched/core.c:9656 Code: 70 02 00 48 8d bb f0 16 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 75 34 48 8b 93 f0 16 00 00 48 c7 c7 00 f1 cb 89 e8 55 c7 c8 07 <0f> 0b e9 75 ff ff ff e8 5f 4b 73 00 e9 26 ff ff ff 89 34 24 e8 62 RSP: 0018:ffffc90000007d68 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880241d3a00 RCX: 0000000000000000 RDX: ffff8880241d3a00 RSI: ffffffff81602018 RDI: fffff52000000f9f RBP: ffffffff8a248b00 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815fc9de R11: 0000000000000000 R12: 00000000000002fe R13: 0000000000000000 R14: ffffffff8a248f00 R15: 0000000000000000 FS: 000055555571c400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c927000 CR3: 000000005e941000 CR4: 0000000000350ef0 Call Trace: blk_release_queue+0x1f/0x320 block/blk-sysfs.c:766 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 blkg_free.part.0+0x112/0x1f0 block/blk-cgroup.c:86 blkg_free block/blk-cgroup.c:78 [inline] __blkg_release+0x105/0x160 block/blk-cgroup.c:102 rcu_do_batch kernel/rcu/tree.c:2535 [inline] rcu_core+0x7b1/0x1880 kernel/rcu/tree.c:2786 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:wait_consider_task+0x99/0x3c50 kernel/exit.c:1291 Code: 28 00 00 00 48 89 84 24 f0 00 00 00 31 c0 e8 3e 03 32 00 49 8d 8f 5c 05 00 00 48 89 c8 48 89 4c 24 10 48 c1 e8 03 0f b6 14 28 <48> 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c2 1a 00 00 45 RSP: 0018:ffffc9000422fb60 EFLAGS: 00000213 RAX: 1ffff1100f0d90ab RBX: 0000000000000000 RCX: ffff8880786c855c RDX: 0000000000000000 RSI: ffffffff81470492 RDI: ffffc9000422fd18 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8ba0a083 R10: ffffffff81474736 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880241d3a00 R14: 0000000000000000 R15: ffff8880786c8000 do_wait_thread kernel/exit.c:1400 [inline] do_wait+0x6ca/0xce0 kernel/exit.c:1517 kernel_wait4+0x14c/0x260 kernel/exit.c:1680 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1708 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ff262a874e7 Code: 89 7c 24 10 48 89 4c 24 18 e8 35 50 02 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 65 50 02 00 8b 44 RSP: 002b:00007ffdda5fb880 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 0000000000002d39 RCX: 00007ff262a874e7 RDX: 0000000040000001 RSI: 00007ffdda5fb90c RDI: 00000000ffffffff RBP: 00007ffdda5fb90c R08: 0000000000000000 R09: 00007ffdda734080 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 00000000000efd6c R14: 0000000000000000 R15: 00007ffdda5fb970 ---------------- Code disassembly (best guess): 0: 28 00 sub %al,(%rax) 2: 00 00 add %al,(%rax) 4: 48 89 84 24 f0 00 00 mov %rax,0xf0(%rsp) b: 00 c: 31 c0 xor %eax,%eax e: e8 3e 03 32 00 callq 0x320351 13: 49 8d 8f 5c 05 00 00 lea 0x55c(%r15),%rcx 1a: 48 89 c8 mov %rcx,%rax 1d: 48 89 4c 24 10 mov %rcx,0x10(%rsp) 22: 48 c1 e8 03 shr $0x3,%rax 26: 0f b6 14 28 movzbl (%rax,%rbp,1),%edx * 2a: 48 89 c8 mov %rcx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 08 jl 0x3f 37: 84 d2 test %dl,%dl 39: 0f 85 c2 1a 00 00 jne 0x1b01 3f: 45 rex.RB