BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 PID: 21724 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 add_chain_cache kernel/locking/lockdep.c:2259 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:2371 [inline] validate_chain kernel/locking/lockdep.c:2391 [inline] __lock_acquire.cold+0x420/0x57e kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152 lock_hrtimer_base kernel/time/hrtimer.c:174 [inline] hrtimer_start_range_ns+0xe6/0xd60 kernel/time/hrtimer.c:1180 perf_swevent_start_hrtimer kernel/events/core.c:9276 [inline] cpu_clock_event_start kernel/events/core.c:9346 [inline] cpu_clock_event_add+0xbd/0xe0 kernel/events/core.c:9358 event_sched_in+0x414/0xdb0 kernel/events/core.c:2288 group_sched_in+0xbe/0x370 kernel/events/core.c:2324 flexible_sched_in+0x5e3/0x9f0 kernel/events/core.c:3330 visit_groups_merge.isra.0+0x2f3/0x550 kernel/events/core.c:3278 ctx_flexible_sched_in kernel/events/core.c:3367 [inline] ctx_sched_in+0x2f0/0x790 kernel/events/core.c:3412 perf_event_sched_in+0x69/0xa0 kernel/events/core.c:2433 perf_event_context_sched_in kernel/events/core.c:3452 [inline] __perf_event_task_sched_in+0x6a7/0x9b0 kernel/events/core.c:3491 perf_event_task_sched_in include/linux/perf_event.h:1115 [inline] finish_task_switch+0x437/0x760 kernel/sched/core.c:2676 context_switch kernel/sched/core.c:2831 [inline] __schedule+0x88f/0x2040 kernel/sched/core.c:3517 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:3641 ___preempt_schedule+0x16/0x18 __local_bh_enable_ip+0x21a/0x270 kernel/softirq.c:196 sctp_for_each_endpoint+0x115/0x1b0 net/sctp/socket.c:5031 sctp_diag_dump+0x2d8/0x3e0 net/sctp/diag.c:505 __inet_diag_dump net/ipv4/inet_diag.c:1058 [inline] inet_diag_dump+0x181/0x2f0 net/ipv4/inet_diag.c:1074 netlink_dump+0x3cf/0xc10 net/netlink/af_netlink.c:2242 __netlink_dump_start+0x4e9/0x6f0 net/netlink/af_netlink.c:2338 netlink_dump_start include/linux/netlink.h:213 [inline] inet_diag_handler_cmd+0x242/0x510 net/ipv4/inet_diag.c:1179 __sock_diag_cmd net/core/sock_diag.c:232 [inline] sock_diag_rcv_msg+0x2fe/0x3e0 net/core/sock_diag.c:263 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 sock_diag_rcv+0x26/0x40 net/core/sock_diag.c:274 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 sock_write_iter+0x287/0x3c0 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] do_iter_readv_writev+0x668/0x790 fs/read_write.c:681 do_iter_write+0x182/0x5d0 fs/read_write.c:960 vfs_writev+0x153/0x2e0 fs/read_write.c:1005 do_writev+0x136/0x330 fs/read_write.c:1040 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7ffa1da400f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffa15b91168 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007ffa1db60050 RCX: 00007ffa1da400f9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 000000000000000c RBP: 00007ffa1da9bae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff78aad8cf R14: 00007ffa15b91300 R15: 0000000000022000 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.4'. IPVS: ftp: loaded support on port[0] = 21 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. base_sock_release(0000000015fad595) sk=00000000be2b7d32 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000d7b1697b [p=00000000f57a7976 fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b1857991 n=00000000885161b9 FS-Cache: O-key=[16] '02000000000000000200010073680000' FS-Cache: N-cookie c=0000000087d4bc68 [p=00000000f57a7976 fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b1857991 n=00000000c6031545 FS-Cache: N-key=[16] '02000000000000000200010073680000' base_sock_release(0000000086a83e5f) sk=00000000e21a4e6f base_sock_release(00000000e1fbe90a) sk=0000000015306fd4 dccp_close: ABORT with 100 bytes unread kauditd_printk_skb: 4 callbacks suppressed audit: type=1804 audit(1678106865.281:1282): pid=21980 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir4005104233/syzkaller.6Z3iHO/1147/.log" dev="sda1" ino=14201 res=1 audit: type=1804 audit(1678106865.661:1283): pid=22044 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir4005104233/syzkaller.6Z3iHO/1148/.log" dev="sda1" ino=15398 res=1 audit: type=1804 audit(1678106866.071:1284): pid=22073 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir4005104233/syzkaller.6Z3iHO/1149/.log" dev="sda1" ino=15474 res=1 overlayfs: unrecognized mount option "u¿èncÄ£¯qW¥‹©6k/1£[a" or missing value overlayfs: unrecognized mount option "u¿èncÄ£¯qW¥‹©6k/1£[a" or missing value wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) audit: type=1804 audit(1678106869.692:1285): pid=22333 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir291579787/syzkaller.AZr4Xr/1118/bus" dev="sda1" ino=14208 res=1 audit: type=1804 audit(1678106869.742:1286): pid=22343 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir291579787/syzkaller.AZr4Xr/1118/bus" dev="sda1" ino=14208 res=1 audit: type=1804 audit(1678106871.782:1287): pid=22426 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir291579787/syzkaller.AZr4Xr/1119/bus" dev="sda1" ino=14188 res=1 audit: type=1804 audit(1678106871.852:1288): pid=22451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir291579787/syzkaller.AZr4Xr/1119/bus" dev="sda1" ino=14188 res=1 audit: type=1804 audit(1678106872.242:1289): pid=22467 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir291579787/syzkaller.AZr4Xr/1120/bus" dev="sda1" ino=15982 res=1 audit: type=1804 audit(1678106872.272:1290): pid=22467 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir291579787/syzkaller.AZr4Xr/1120/bus" dev="sda1" ino=15982 res=1 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'. overlayfs: unrecognized mount option "workdi/file1" or missing value IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 overlayfs: unrecognized mount option "workdi/file1" or missing value ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 sctp: [Deprecated]: syz-executor.0 (pid 22772) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22782) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead IPVS: ftp: loaded support on port[0] = 21 sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor.0 (pid 22807) Use of int in maxseg socket option. Use struct sctp_assoc_value instead IPVS: ftp: loaded support on port[0] = 21