watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz-executor.0:4547] Modules linked in: CPU: 0 PID: 4547 Comm: syz-executor.0 Tainted: G W 5.15.148-syzkaller-00013-gad06eaf051cd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline] RIP: 0010:pv_hybrid_queued_unfair_trylock kernel/locking/qspinlock_paravirt.h:98 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x248/0xc40 kernel/locking/qspinlock.c:443 Code: 00 00 fc ff df 31 c0 b1 01 f0 41 0f b0 0f 84 c0 0f 84 b6 06 00 00 41 81 fc 00 00 01 00 72 24 41 81 e4 00 ff 00 00 75 1b f3 90 98 44 89 f9 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 ff e8 91 4e 5d RSP: 0018:ffffc900000a6b60 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8881f7037ed4 RCX: ffffffff8154f41f RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888111fe6418 RBP: ffffc900000a6c50 R08: dffffc0000000000 R09: ffffed10223fcc84 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 1ffff110223fcc83 R14: 1ffff1103ee06fd9 R15: ffff888111fe6418 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002023d000 CR3: 000000012a6ba000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178 sock_hash_delete_elem+0xb1/0x2f0 net/core/sock_map.c:937 bpf_prog_bc4ba9860fbb0da4+0x3e/0x11c bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline] bpf_trace_run3+0x11e/0x250 kernel/trace/bpf_trace.c:1921 __bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138 trace_kmem_cache_free include/trace/events/kmem.h:138 [inline] kmem_cache_free+0x2c3/0x2e0 mm/slub.c:3536 jbd2_free_handle include/linux/jbd2.h:1602 [inline] jbd2_journal_stop+0x82c/0xc70 fs/jbd2/transaction.c:1964 __ext4_journal_stop+0x111/0x1c0 fs/ext4/ext4_jbd2.c:127 ext4_writepages+0x2c01/0x4000 fs/ext4/inode.c:2843 do_writepages+0x40e/0x670 mm/page-writeback.c:2366 filemap_fdatawrite_wbc+0x248/0x2a0 mm/filemap.c:404 __filemap_fdatawrite_range mm/filemap.c:437 [inline] __filemap_fdatawrite mm/filemap.c:443 [inline] filemap_flush+0x10c/0x150 mm/filemap.c:470 ext4_alloc_da_blocks+0x77/0x1a0 fs/ext4/inode.c:3152 ext4_release_file+0x84/0x310 fs/ext4/file.c:143 __fput+0x3fe/0x910 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xc48/0x2ca0 kernel/exit.c:878 do_group_exit+0x141/0x310 kernel/exit.c:1000 get_signal+0x7a3/0x1630 kernel/signal.c:2896 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:314 irqentry_exit+0x12/0x40 kernel/entry/common.c:405 exc_general_protection+0x327/0x4b0 arch/x86/kernel/traps.c:562 asm_exc_general_protection+0x27/0x30 arch/x86/include/asm/idtentry.h:562 RIP: 0033:0x7f57058e6eb1 Code: Unable to access opcode bytes at RIP 0x7f57058e6e87. RSP: 002b:0000000020000190 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f5705a14f80 RCX: 00007f57058e6ea9 RDX: 00000000200002c0 RSI: 0000000020000190 RDI: 0000000040000000 RBP: 00007f57059334a4 R08: 00000000200012c0 R09: 00000000200012c0 R10: 0000000020000300 R11: 0000000000000206 R12: 0000000000000000 R13: 000000000000000b R14: 00007f5705a14f80 R15: 00007ffd5769c1f8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4677 Comm: syz-executor.3 Tainted: G W 5.15.148-syzkaller-00013-gad06eaf051cd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline] RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline] RIP: 0010:kvm_wait+0x117/0x180 arch/x86/kernel/kvm.c:912 Code: 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 53 41 0f b6 45 00 44 38 f0 0f 85 63 ff ff ff 66 90 0f 00 2d 8a 03 f3 03 f4 54 ff ff ff fa 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b RSP: 0018:ffffc90000a27360 EFLAGS: 00000046 RAX: 0000000000000003 RBX: 1ffff92000144e70 RCX: ffffffff8154f88f RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888111fe6418 RBP: ffffc90000a27410 R08: dffffc0000000000 R09: ffffed10223fcc84 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888111fe6418 R14: 0000000000000003 R15: 1ffff92000144e74 FS: 00005555566f7480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e724000 CR3: 0000000139795000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178 sock_hash_delete_elem+0xb1/0x2f0 net/core/sock_map.c:937 bpf_prog_bc4ba9860fbb0da4+0x3e/0x68 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run include/linux/filter.h:632 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline] bpf_trace_run3+0x11e/0x250 kernel/trace/bpf_trace.c:1921 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:52 __traceiter_timer_start+0x7f/0xd0 include/trace/events/timer.h:52 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x351/0x4c0 kernel/time/timer.c:592 internal_add_timer kernel/time/timer.c:617 [inline] __mod_timer+0x8d3/0xcf0 kernel/time/timer.c:1068 add_timer+0x68/0x80 kernel/time/timer.c:1150 __queue_delayed_work+0x16d/0x1f0 kernel/workqueue.c:1697 queue_delayed_work_on+0x10f/0x180 kernel/workqueue.c:1722 queue_delayed_work include/linux/workqueue.h:525 [inline] schedule_delayed_work include/linux/workqueue.h:629 [inline] kvfree_call_rcu+0x45b/0x7d0 kernel/rcu/tree.c:3625 sock_hash_free_elem net/core/sock_map.c:898 [inline] sock_hash_delete_from_link net/core/sock_map.c:921 [inline] sock_map_unlink net/core/sock_map.c:1493 [inline] sock_map_remove_links+0x4a3/0x570 net/core/sock_map.c:1505 sock_map_close+0x2ac/0x4c0 net/core/sock_map.c:1546 unix_release+0x82/0xc0 net/unix/af_unix.c:949 __sock_release net/socket.c:649 [inline] sock_close+0xdf/0x270 net/socket.c:1336 __fput+0x3fe/0x910 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:175 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f4d580a4d9a Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffc282e5340 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 000000000000000a RCX: 00007f4d580a4d9a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 RBP: 00007f4d581d5980 R08: 00007f4d58028000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000293 R12: 0000000000083d4a R13: 0000000000083d18 R14: 00007ffc282e5500 R15: 00007f4d5805ccb0