Hello, syzbot found the following issue on: HEAD commit: 08e8a949f684 net: wwan: t7xx: Fix the ACPI memory leak git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=15cc5b2d880000 kernel config: https://syzkaller.appspot.com/x/.config?x=60808f80d41c27e5 dashboard link: https://syzkaller.appspot.com/bug?extid=9204e7399656300bf271 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15569dc5880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1437f803880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/49fbc1a069d4/disk-08e8a949.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0aadd1f9073a/vmlinux-08e8a949.xz kernel image: https://storage.googleapis.com/syzbot-assets/b75d62dbd582/bzImage-08e8a949.xz The issue was bisected to: commit 5f7b51bf09baca8e4f80cbe879536842bafb5f31 Author: Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxx> Date: Wed Jul 28 15:01:15 2021 +0000 netfilter: ipset: Limit the maximal range of consecutive elements to add/delete bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15e630e3880000 final oops: https://syzkaller.appspot.com/x/report.txt?x=17e630e3880000 console output: https://syzkaller.appspot.com/x/log.txt?x=13e630e3880000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9204e7399656300bf271@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 5f7b51bf09ba ("netfilter: ipset: Limit the maximal range of consecutive elements to add/delete") INFO: task syz-executor291:3680 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-00204-g08e8a949f684 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor291 state:D stack:27192 pid:3680 ppid:3668 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 nfnl_lock net/netfilter/nfnetlink.c:97 [inline] nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 nfnetlink_rcv+0x1b0/0x420 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2298c5e0e9 RSP: 002b:00007ffc1c6fdb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f2298c5e0e9 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 00007ffc1c6fd5b0 R11: 0000000000000246 R12: 000000000007689b R13: 00007ffc1c6fdb4c R14: 00007ffc1c6fdb60 R15: 00007ffc1c6fdb50 </TASK> INFO: task syz-executor291:3681 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-00204-g08e8a949f684 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor291 state:D stack:27952 pid:3681 ppid:3662 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 nfnl_lock net/netfilter/nfnetlink.c:97 [inline] nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 nfnetlink_rcv+0x1b0/0x420 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2298c5e0e9 RSP: 002b:00007ffc1c6fdb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f2298c5e0e9 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 00007ffc1c6fd5b0 R11: 0000000000000246 R12: 0000000000076893 R13: 00007ffc1c6fdb4c R14: 00007ffc1c6fdb60 R15: 00007ffc1c6fdb50 </TASK> INFO: task syz-executor291:3682 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-00204-g08e8a949f684 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor291 state:D stack:26400 pid:3682 ppid:3663 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 nfnl_lock net/netfilter/nfnetlink.c:97 [inline] nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 nfnetlink_rcv+0x1b0/0x420 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2298c5e0e9 RSP: 002b:00007ffc1c6fdb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f2298c5e0e9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000076898 R13: 00007ffc1c6fdb4c R14: 00007ffc1c6fdb60 R15: 00007ffc1c6fdb50 </TASK> INFO: task syz-executor291:3684 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-00204-g08e8a949f684 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor291 state:D stack:27000 pid:3684 ppid:3666 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 nfnl_lock net/netfilter/nfnetlink.c:97 [inline] nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 nfnetlink_rcv+0x1b0/0x420 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2298c5e0e9 RSP: 002b:00007ffc1c6fdb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f2298c5e0e9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 000000000007689e R13: 00007ffc1c6fdb4c R14: 00007ffc1c6fdb60 R15: 00007ffc1c6fdb50 </TASK> INFO: task syz-executor291:3685 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-00204-g08e8a949f684 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor291 state:D stack:27952 pid:3685 ppid:3667 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 nfnl_lock net/netfilter/nfnetlink.c:97 [inline] nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 nfnetlink_rcv+0x1b0/0x420 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2298c5e0e9 RSP: 002b:00007ffc1c6fdb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f2298c5e0e9 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 00007ffc1c6fd5b0 R11: 0000000000000246 R12: 0000000000076899 R13: 00007ffc1c6fdb4c R14: 00007ffc1c6fdb60 R15: 00007ffc1c6fdb50 </TASK> Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c58f0f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c58edf0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494 2 locks held by getty/3309: #0: ffff88814afa0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 1 lock held by syz-executor291/3680: #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnl_lock net/netfilter/nfnetlink.c:97 [inline] #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 1 lock held by syz-executor291/3681: #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnl_lock net/netfilter/nfnetlink.c:97 [inline] #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 1 lock held by syz-executor291/3682: #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnl_lock net/netfilter/nfnetlink.c:97 [inline] #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 1 lock held by syz-executor291/3683: 1 lock held by syz-executor291/3684: #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnl_lock net/netfilter/nfnetlink.c:97 [inline] #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 1 lock held by syz-executor291/3685: #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnl_lock net/netfilter/nfnetlink.c:97 [inline] #0: ffffffff91d48cf8 (nfnl_subsys_ipset){+.+.}-{3:3}, at: nfnetlink_rcv_msg+0xaae/0x1430 net/netfilter/nfnetlink.c:294 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc5-syzkaller-00204-g08e8a949f684 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc75/0xfc0 kernel/hung_task.c:377 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3683 Comm: syz-executor291 Not tainted 6.1.0-rc5-syzkaller-00204-g08e8a949f684 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:ip_set_hostmask include/linux/netfilter/ipset/pfxlen.h:28 [inline] RIP: 0010:ip_set_range_to_cidr+0x4c/0x160 net/netfilter/ipset/pfxlen.c:178 Code: 01 00 00 00 53 bb 00 00 00 80 48 83 ec 10 89 74 24 04 48 89 54 24 08 eb 25 e8 70 ed 67 f9 4c 89 e0 48 c1 e8 03 42 0f b6 04 30 <84> c0 74 08 3c 03 0f 8e dd 00 00 00 41 8b 1c 24 49 83 c4 10 e8 4b RSP: 0018:ffffc90003dcf008 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: 00000000fffc0000 RCX: 0000000000000000 RDX: ffff8880783a57c0 RSI: ffffffff88182c10 RDI: 0000000000000001 RBP: 000000000000000f R08: 0000000000000001 R09: 0000000000000020 R10: 000000000000000f R11: 0000000000000000 R12: ffffffff8b638fb0 R13: 000000001aff8de1 R14: dffffc0000000000 R15: 000000001afc0000 FS: 0000555555f42300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555f422c0 CR3: 0000000077d7d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> hash_net4_uadt+0x50c/0x9d0 net/netfilter/ipset/ip_set_hash_net.c:193 call_ad.constprop.0+0x101/0x760 net/netfilter/ipset/ip_set_core.c:1698 ip_set_ad.constprop.0.isra.0+0x4c7/0xac0 net/netfilter/ipset/ip_set_core.c:1787 nfnetlink_rcv_msg+0xbca/0x1430 net/netfilter/nfnetlink.c:301 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 nfnetlink_rcv+0x1b0/0x420 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2298c5e0e9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc1c6fdb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f2298c5e0e9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 000000000007689c R13: 00007ffc1c6fdb4c R14: 00007ffc1c6fdb60 R15: 00007ffc1c6fdb50 </TASK> INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.969 msecs --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
