------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=1 set at [] do_nanosleep+0x167/0x690 kernel/time/hrtimer.c:2049 WARNING: CPU: 1 PID: 3643 at kernel/sched/core.c:9656 __might_sleep+0x105/0x150 kernel/sched/core.c:9656 Modules linked in: CPU: 1 PID: 3643 Comm: syz-executor.0 Tainted: G W 5.17.0-syzkaller-11406-gf82da161ea75 #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 df cb 89 e8 96 47 c8 07 <0f> 0b e9 75 ff ff ff e8 9f 2a 73 00 e9 26 ff ff ff 89 34 24 e8 a2 RSP: 0018:ffffc900001e0d68 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888018c50000 RCX: 0000000000000000 RDX: ffff888018c50000 RSI: ffffffff815fce18 RDI: fffff5200003c19f RBP: ffffffff8a247980 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815f77ee R11: 0000000000000000 R12: 00000000000002fe R13: 0000000000000000 R14: ffffffff8a247d80 R15: 0000000000000000 FS: 0000555555c53400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f99ec8cfd58 CR3: 00000000727a2000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:645 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 9a a4 fc f7 48 89 ef e8 e2 23 fd f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 a3 3c f0 f7 65 8b 05 3c b4 a1 76 85 c0 74 0a 5b 5d c3 e8 30 28 RSP: 0018:ffffc90003c7fc78 EFLAGS: 00000206 RAX: 0000000000000046 RBX: 0000000000000200 RCX: 1ffffffff1b6ce35 RDX: 0000000000000000 RSI: ffffffff817ee411 RDI: 0000000000000001 RBP: ffff8880b9d2a600 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817ee3f8 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffc90003c7fdd8 R15: ffff888018c50000 hrtimer_start_expires include/linux/hrtimer.h:432 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1965 [inline] do_nanosleep+0x1e8/0x690 kernel/time/hrtimer.c:2041 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1227 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline] __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1245 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ff0c96add71 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f RSP: 002b:00007ff0c9ccfd10 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 000000000000014d RCX: 00007ff0c96add71 RDX: 00007ff0c9ccfd50 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ff0c9ccfddc R08: 0000000000000000 R09: 00007ffe8b252080 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 0000000000031cdf R14: 0000000000000005 R15: 00007ff0c9ccfe40 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 24 10 and $0x10,%al 2: e8 9a a4 fc f7 callq 0xf7fca4a1 7: 48 89 ef mov %rbp,%rdi a: e8 e2 23 fd f7 callq 0xf7fd23f1 f: 81 e3 00 02 00 00 and $0x200,%ebx 15: 75 25 jne 0x3c 17: 9c pushfq 18: 58 pop %rax 19: f6 c4 02 test $0x2,%ah 1c: 75 2d jne 0x4b 1e: 48 85 db test %rbx,%rbx 21: 74 01 je 0x24 23: fb sti 24: bf 01 00 00 00 mov $0x1,%edi * 29: e8 a3 3c f0 f7 callq 0xf7f03cd1 <-- trapping instruction 2e: 65 8b 05 3c b4 a1 76 mov %gs:0x76a1b43c(%rip),%eax # 0x76a1b471 35: 85 c0 test %eax,%eax 37: 74 0a je 0x43 39: 5b pop %rbx 3a: 5d pop %rbp 3b: c3 retq 3c: e8 .byte 0xe8 3d: 30 28 xor %ch,(%rax)