watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.0:8335] Modules linked in: irq event stamp: 155584 hardirqs last enabled at (155583): [] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (155584): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (124886): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last enabled at (124886): [] irq_exit+0x227/0x230 kernel/softirq.c:413 softirqs last disabled at (124831): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (124831): [] irq_exit+0x227/0x230 kernel/softirq.c:413 CPU: 0 PID: 8335 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:free_thread_stack+0x177/0x590 kernel/fork.c:284 Code: 80 3c 28 00 74 08 48 89 df e8 25 a0 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 a0 69 00 <49> 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 RSP: 0018:ffffc90001e37bd0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81487433 RBX: ffff8880a7eac288 RCX: ffff88808dbc2380 RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00029f2900 RBP: ffffc90001e37c08 R08: dffffc0000000000 R09: fffffbfff120248a R10: fffffbfff120248a R11: 0000000000000000 R12: ffff8880a7eac320 R13: dffffc0000000000 R14: 1ffff11014fd5864 R15: ffff888098e51828 FS: 0000000000e74940(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0bccd40000 CR3: 000000007f9bb000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: release_task_stack kernel/fork.c:440 [inline] put_task_stack+0xa3/0x130 kernel/fork.c:451 finish_task_switch+0x3f1/0x550 kernel/sched/core.c:3256 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x9a8/0xcc0 kernel/sched/core.c:4081 schedule+0x181/0x210 kernel/sched/core.c:4155 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x1d0/0x6c0 kernel/time/hrtimer.c:1874 hrtimer_nanosleep+0x3a6/0x5b0 kernel/time/hrtimer.c:1927 __do_sys_nanosleep kernel/time/hrtimer.c:1961 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1948 [inline] __x64_sys_nanosleep+0x186/0x1d0 kernel/time/hrtimer.c:1948 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458b20 Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d 11 fe 61 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 ea 46 00 00 RSP: 002b:00007fffbd2816e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 000000000000f4d2 RCX: 0000000000458b20 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fffbd2816f0 RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000e74940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 00007fffbd281740 R14: 000000000000f4bc R15: 00007fffbd281750 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8357 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:35 [inline] RIP: 0010:memcg_kmem_enabled include/linux/memcontrol.h:1389 [inline] RIP: 0010:memcg_kmem_uncharge include/linux/memcontrol.h:1401 [inline] RIP: 0010:free_thread_stack+0x11f/0x590 kernel/fork.c:284 Code: 3e e8 e5 96 ee ff 48 c1 e8 06 48 83 e0 c0 48 bf 00 00 00 00 00 ea ff ff 48 01 c7 be 03 00 00 00 e8 f6 9e 60 00 e9 5d 04 00 00 dc 2a 2e 00 48 89 df 31 f6 e8 a2 a1 6e 00 43 80 3c 2e 00 74 08 RSP: 0018:ffffc900021d7848 EFLAGS: 00000246 RAX: 1ffff11012469311 RBX: ffffea00025a65c0 RCX: 0000000000040000 RDX: ffffc90001e79000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc900021d7880 R08: dffffc0000000000 R09: fffffbfff1287a8d R10: fffffbfff1287a8d R11: 0000000000000000 R12: ffff888092349920 R13: dffffc0000000000 R14: 1ffff11012469324 R15: ffff888098485628 FS: 00007fc138f87700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 00000000a3424000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: release_task_stack kernel/fork.c:440 [inline] put_task_stack+0xa3/0x130 kernel/fork.c:451 finish_task_switch+0x3f1/0x550 kernel/sched/core.c:3256 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x9a8/0xcc0 kernel/sched/core.c:4081 schedule+0x181/0x210 kernel/sched/core.c:4155 freezable_schedule include/linux/freezer.h:172 [inline] futex_wait_queue_me+0x2a3/0x4b0 kernel/futex.c:2704 futex_wait+0x252/0x770 kernel/futex.c:2810 do_futex+0x437/0x3d60 kernel/futex.c:3881 __do_sys_futex kernel/futex.c:3942 [inline] __se_sys_futex+0x28c/0x360 kernel/futex.c:3910 __x64_sys_futex+0xe5/0x100 kernel/futex.c:3910 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a679 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc138f86cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c R13: 00007fffbd2814df R14: 00007fc138f879c0 R15: 000000000075bf2c