memory leak in cfserl

memory leak in cfserl_create
Status: upstream: reported C repro on 2019/06/05 18:42
Reported-by: syzbot+7ec324747ce876a29db6@syzkaller.appspotmail.com
Fix commit: b53558a950a8 net: caif: fix memory leak in caif_device_notify
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-arm32]
First crash: 785d, last: 615d
Patch testing requests:
Created	Duration	User	Patch	Repo	Result
2021/06/03 08:47	16m	paskripkin@gmail.com		https://github.com/pskrgag/linux.git cfserl_create_memleak	OK
Sample crash report:
BUG: memory leak
unreferenced object 0xffff88811a462e80 (size 128):
  comm "syz-executor288", pid 7010, jiffies 4294942180 (age 17.300s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347b00 (size 128):
  comm "syz-executor288", pid 7042, jiffies 4294942186 (age 17.240s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347a80 (size 128):
  comm "syz-executor288", pid 7045, jiffies 4294942189 (age 17.210s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88811a462e80 (size 128):
  comm "syz-executor288", pid 7010, jiffies 4294942180 (age 18.270s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347b00 (size 128):
  comm "syz-executor288", pid 7042, jiffies 4294942186 (age 18.210s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347a80 (size 128):
  comm "syz-executor288", pid 7045, jiffies 4294942189 (age 18.180s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88811a462e80 (size 128):
  comm "syz-executor288", pid 7010, jiffies 4294942180 (age 19.180s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347b00 (size 128):
  comm "syz-executor288", pid 7042, jiffies 4294942186 (age 19.120s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347a80 (size 128):
  comm "syz-executor288", pid 7045, jiffies 4294942189 (age 19.090s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88811a462e80 (size 128):
  comm "syz-executor288", pid 7010, jiffies 4294942180 (age 19.230s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347b00 (size 128):
  comm "syz-executor288", pid 7042, jiffies 4294942186 (age 19.170s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347a80 (size 128):
  comm "syz-executor288", pid 7045, jiffies 4294942189 (age 19.140s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88811a462e80 (size 128):
  comm "syz-executor288", pid 7010, jiffies 4294942180 (age 20.140s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347b00 (size 128):
  comm "syz-executor288", pid 7042, jiffies 4294942186 (age 20.080s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888123347a80 (size 128):
  comm "syz-executor288", pid 7045, jiffies 4294942189 (age 20.050s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002714e67e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000002714e67e>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000002714e67e>] slab_alloc mm/slab.c:3319 [inline]
    [<000000002714e67e>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000915bf8cb>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000915bf8cb>] kzalloc include/linux/slab.h:690 [inline]
    [<00000000915bf8cb>] cfserl_create+0x24/0x76 net/caif/cfserl.c:36
    [<000000004db1f2cb>] caif_device_notify+0x347/0x3bc net/caif/caif_dev.c:388
    [<0000000086dc5891>] notifier_call_chain+0x66/0xb0 kernel/notifier.c:95
    [<0000000045fb8e33>] __raw_notifier_call_chain kernel/notifier.c:396 [inline]
    [<0000000045fb8e33>] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
    [<0000000037d7356c>] call_netdevice_notifiers_info+0x33/0x70 net/core/dev.c:1668
    [<00000000ec0b1f01>] call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
    [<00000000ec0b1f01>] call_netdevice_notifiers net/core/dev.c:1694 [inline]
    [<00000000ec0b1f01>] register_netdevice+0x445/0x610 net/core/dev.c:9115
    [<00000000602c08ce>] ldisc_open+0x1de/0x330 drivers/net/caif/caif_serial.c:353
    [<00000000ad3145e8>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469
    [<000000000ea67349>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596
    [<00000000a060b2b9>] tiocsetd drivers/tty/tty_io.c:2334 [inline]
    [<00000000a060b2b9>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2594
    [<0000000048a547e9>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<0000000048a547e9>] file_ioctl fs/ioctl.c:509 [inline]
    [<0000000048a547e9>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<00000000bfaa585f>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713
    [<000000005dc25c36>] __do_sys_ioctl fs/ioctl.c:720 [inline]
    [<000000005dc25c36>] __se_sys_ioctl fs/ioctl.c:718 [inline]
    [<000000005dc25c36>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718
    [<00000000bada9ee6>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<000000000d7aaebb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

executing program
executing program
executing program
Crashes (13):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro
ci-upstream-gce-leak	2019/11/20 18:55	upstream	c74386d50fba	f4b7ed07	.config	log	report	syz	C
ci-upstream-gce-leak	2019/09/23 10:30	upstream	619e17cf75dd	d96e88f3	.config	log	report	syz	C
ci-upstream-gce-leak	2019/09/17 09:42	upstream	cef7298262e9	51ca0454	.config	log	report	syz	C
ci-upstream-gce-leak	2019/11/21 23:17	upstream	c74386d50fba	8098ea0f	.config	log	report	syz
ci-upstream-gce-leak	2019/11/19 11:17	upstream	af42d3466bdc	5bc70212	.config	log	report	syz
ci-upstream-gce-leak	2019/11/11 10:12	upstream	9805a68371ce	dc438b91	.config	log	report	syz
ci-upstream-gce-leak	2019/11/10 20:43	upstream	00aff6836241	dc438b91	.config	log	report	syz
ci-upstream-gce-leak	2019/10/31 12:38	upstream	e472c64aa4fa	a41ca8fa	.config	log	report	syz
ci-upstream-gce-leak	2019/10/21 05:33	upstream	4fe34d61a3a9	8c88c9c1	.config	log	report	syz
ci-upstream-gce-leak	2019/10/20 08:22	upstream	531e93d11470	8c88c9c1	.config	log	report	syz
ci-upstream-gce-leak	2019/08/25 19:19	upstream	e67095fd2f72	d21c5d9d	.config	log	report	syz
ci-upstream-gce-leak	2019/08/07 06:51	upstream	f4eb1423e433	cdde7486	.config	log	report	syz
ci-upstream-gce-leak	2019/06/05 07:12	upstream	788a024921c4	bfb4a51e	.config	log	report	syz