syzkaller login: [ 2.624247][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 23.881114][ T466] cgroup: Unknown subsys name 'net'
[ 23.882973][ T466] cgroup: Unknown subsys name 'net_prio'
[ 23.885228][ T466] cgroup: Unknown subsys name 'devices'
[ 23.886718][ T466] cgroup: Unknown subsys name 'blkio'
[ 23.974858][ T466] cgroup: Unknown subsys name 'hugetlb'
[ 23.980504][ T466] cgroup: Unknown subsys name 'rlimit'
[ 24.120990][ T466] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 24.935360][ T469] syz-executor.0 (469) used greatest stack depth: 12040 bytes left
Warning: Permanently added '10.128.0.112' (ED25519) to the list of known hosts.
2024/03/01 11:03:23 ignoring optional flag "sandboxArg"="0"
2024/03/01 11:03:23 parsed 1 programs
2024/03/01 11:03:23 executed programs: 0
[ 42.244304][ T1046] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 43.314440][ T1527] ------------[ cut here ]------------
[ 43.319910][ T1527] unexpected event refcount: 2; ptr=ffff88810b5d1a68
[ 43.327221][ T1527] WARNING: CPU: 1 PID: 1527 at kernel/events/core.c:5165 free_event+0x31/0x40
[ 43.336062][ T1527] Modules linked in:
[ 43.339934][ T1527] CPU: 1 PID: 1527 Comm: syz-executor.0 Not tainted 5.15.149-syzkaller #0
[ 43.348603][ T1527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 43.358953][ T1527] RIP: 0010:free_event+0x31/0x40
[ 43.363962][ T1527] Code: f0 48 0f b1 97 28 02 00 00 48 83 f8 01 75 05 e9 05 fd ff ff 48 8b b7 28 02 00 00 48 89 fa 48 c7 c7 50 01 31 82 e8 aa a9 83 00 <0f> 0b c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 56 41 55 49 c7 c5
[ 43.384282][ T1527] RSP: 0018:ffffc9000165fcb8 EFLAGS: 00010286
[ 43.390333][ T1527] RAX: 0000000000000000 RBX: dead000000000122 RCX: 00000000ffffdfff
[ 43.398315][ T1527] RDX: 00000000ffffffea RSI: 00000000ffffdfff RDI: 0000000000000001
[ 43.406379][ T1527] RBP: ffff88810b5d1a68 R08: ffffffff827745e8 R09: 0000000000000003
[ 43.414345][ T1527] R10: 00000000ffffe000 R11: 3fffffffffffffff R12: ffff88810b5d0fd8
[ 43.422561][ T1527] R13: ffff8881009eed54 R14: ffffc9000165fa00 R15: dead000000000100
[ 43.430540][ T1527] FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
[ 43.439551][ T1527] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 43.446492][ T1527] CR2: 00007fff80ce8ec8 CR3: 0000000002621000 CR4: 00000000003506e0
[ 43.454722][ T1527] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 43.462939][ T1527] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 43.471363][ T1527] Call Trace:
[ 43.474647][ T1527]
[ 43.477653][ T1527] ? __warn+0x7b/0xf0
[ 43.481683][ T1527] ? free_event+0x31/0x40
[ 43.486195][ T1527] ? report_bug+0x9a/0xc0
[ 43.490508][ T1527] ? handle_bug+0x3c/0x60
[ 43.494938][ T1527] ? exc_invalid_op+0x14/0x70
[ 43.499593][ T1527] ? asm_exc_invalid_op+0x16/0x20
[ 43.504612][ T1527] ? free_event+0x31/0x40
[ 43.509180][ T1527] ? free_event+0x31/0x40
[ 43.513489][ T1527] perf_event_release_kernel+0x25f/0x2f0
[ 43.519224][ T1527] perf_release+0xc/0x10
[ 43.525977][ T1527] __fput+0x83/0x250
[ 43.529941][ T1527] task_work_run+0x54/0x80
[ 43.534555][ T1527] do_exit+0x38d/0xae0
[ 43.538702][ T1527] do_group_exit+0x34/0xb0
[ 43.543094][ T1527] get_signal+0xca/0xac0
[ 43.547323][ T1527] arch_do_signal_or_restart+0xf8/0x710
[ 43.552938][ T1527] exit_to_user_mode_prepare+0x116/0x190
[ 43.558674][ T1527] syscall_exit_to_user_mode+0x12/0x30
[ 43.564137][ T1527] ret_from_fork+0x15/0x30
[ 43.568533][ T1527] RIP: 0033:0x7fdfb34dbce9
[ 43.573448][ T1527] Code: Unable to access opcode bytes at RIP 0x7fdfb34dbcbf.
[ 43.581040][ T1527] RSP: 002b:00007fdfb305e078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
[ 43.590144][ T1527] RAX: 0000000000000000 RBX: 00007fdfb35faf80 RCX: 00007fdfb34dbce9
[ 43.598893][ T1527] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000200
[ 43.606862][ T1527] RBP: 00007fdfb352847a R08: 0000000000000000 R09: 0000000000000000
[ 43.614989][ T1527] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
[ 43.623364][ T1527] R13: 0000000000000006 R14: 00007fdfb35faf80 R15: 00007fff80cea458
[ 43.631698][ T1527]
[ 43.634803][ T1527] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 43.642093][ T1527] CPU: 1 PID: 1527 Comm: syz-executor.0 Not tainted 5.15.149-syzkaller #0
[ 43.650684][ T1527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 43.660981][ T1527] Call Trace:
[ 43.664363][ T1527]
[ 43.667389][ T1527] dump_stack_lvl+0x41/0x5e
[ 43.672057][ T1527] panic+0xfb/0x2ae
[ 43.675912][ T1527] check_panic_on_warn.cold+0xf/0x1e
[ 43.681284][ T1527] __warn+0x87/0xf0
[ 43.685169][ T1527] ? free_event+0x31/0x40
[ 43.689565][ T1527] report_bug+0x9a/0xc0
[ 43.693708][ T1527] handle_bug+0x3c/0x60
[ 43.697844][ T1527] exc_invalid_op+0x14/0x70
[ 43.702319][ T1527] asm_exc_invalid_op+0x16/0x20
[ 43.707237][ T1527] RIP: 0010:free_event+0x31/0x40
[ 43.712456][ T1527] Code: f0 48 0f b1 97 28 02 00 00 48 83 f8 01 75 05 e9 05 fd ff ff 48 8b b7 28 02 00 00 48 89 fa 48 c7 c7 50 01 31 82 e8 aa a9 83 00 <0f> 0b c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 56 41 55 49 c7 c5
[ 43.733273][ T1527] RSP: 0018:ffffc9000165fcb8 EFLAGS: 00010286
[ 43.739319][ T1527] RAX: 0000000000000000 RBX: dead000000000122 RCX: 00000000ffffdfff
[ 43.747531][ T1527] RDX: 00000000ffffffea RSI: 00000000ffffdfff RDI: 0000000000000001
[ 43.755566][ T1527] RBP: ffff88810b5d1a68 R08: ffffffff827745e8 R09: 0000000000000003
[ 43.763786][ T1527] R10: 00000000ffffe000 R11: 3fffffffffffffff R12: ffff88810b5d0fd8
[ 43.771837][ T1527] R13: ffff8881009eed54 R14: ffffc9000165fa00 R15: dead000000000100
[ 43.780543][ T1527] ? free_event+0x31/0x40
[ 43.785295][ T1527] perf_event_release_kernel+0x25f/0x2f0
[ 43.791007][ T1527] perf_release+0xc/0x10
[ 43.795751][ T1527] __fput+0x83/0x250
[ 43.799723][ T1527] task_work_run+0x54/0x80
[ 43.804133][ T1527] do_exit+0x38d/0xae0
[ 43.808426][ T1527] do_group_exit+0x34/0xb0
[ 43.813119][ T1527] get_signal+0xca/0xac0
[ 43.817473][ T1527] arch_do_signal_or_restart+0xf8/0x710
[ 43.824068][ C0] hrtimer: interrupt took 16515 ns
[ 43.824080][ T1527] exit_to_user_mode_prepare+0x116/0x190
[ 43.836173][ T1527] syscall_exit_to_user_mode+0x12/0x30
[ 43.841622][ T1527] ret_from_fork+0x15/0x30
[ 43.846116][ T1527] RIP: 0033:0x7fdfb34dbce9
[ 43.850523][ T1527] Code: Unable to access opcode bytes at RIP 0x7fdfb34dbcbf.
[ 43.858176][ T1527] RSP: 002b:00007fdfb305e078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
[ 43.866831][ T1527] RAX: 0000000000000000 RBX: 00007fdfb35faf80 RCX: 00007fdfb34dbce9
[ 43.874871][ T1527] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000200
[ 43.882825][ T1527] RBP: 00007fdfb352847a R08: 0000000000000000 R09: 0000000000000000
[ 43.890898][ T1527] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
[ 43.898862][ T1527] R13: 0000000000000006 R14: 00007fdfb35faf80 R15: 00007fff80cea458
[ 43.906945][ T1527]
[ 43.910231][ T1527] Kernel Offset: disabled
[ 43.914913][ T1527] Rebooting in 86400 seconds..