bisecting fixing commit since 4fccc2503536a564a4ba31a1d50439854201659f
building syzkaller on 2c36e7a75f8689b3da20e1a81a2ee5391f3af6e5
testing commit 4fccc2503536a564a4ba31a1d50439854201659f with gcc (GCC) 8.4.1 20210217
kernel signature: 9685f9bd115aa645613ce1706c04918d10f9a91de19859ab44722b86f6c2dbcc
all runs: crashed: KASAN: use-after-free Read in qfq_search_class
testing current HEAD eb575cd5d7f60241d016fdd13a9e86d962093c9b
testing commit eb575cd5d7f60241d016fdd13a9e86d962093c9b with gcc (GCC) 8.4.1 20210217
kernel signature: 413ff1b1da1f435376bc5e82e2a2e946b9d5cf9c33eae6670cdd7ac23756fb5c
all runs: crashed: KASAN: use-after-free Read in qfq_search_class
revisions tested: 2, total time: 30m40.112175988s (build: 17m17.321785367s, test: 13m1.615593119s)
the crash still happens on HEAD
commit msg: Linux 4.19.195
crash: KASAN: use-after-free Read in qfq_search_class
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007ffa3d3a56bc R14: 0000000000000009 R15: 0000000000000001
==================================================================
BUG: KASAN: use-after-free in qdisc_class_find include/net/sch_generic.h:528 [inline]
BUG: KASAN: use-after-free in qfq_find_class net/sched/sch_qfq.c:214 [inline]
BUG: KASAN: use-after-free in qfq_search_class+0x181/0x1f0 net/sched/sch_qfq.c:565
Read of size 4 at addr ffff8881dd7386c0 by task syz-executor.0/14127

CPU: 1 PID: 14127 Comm: syz-executor.0 Not tainted 4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold.9+0x242/0x2fe mm/kasan/report.c:396
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
 qdisc_class_find include/net/sch_generic.h:528 [inline]
 qfq_find_class net/sched/sch_qfq.c:214 [inline]
 qfq_search_class+0x181/0x1f0 net/sched/sch_qfq.c:565
 tc_ctl_tclass+0x63a/0xba0 net/sched/sch_api.c:1957
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdfa74b6198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fdfa74b66bc R14: 00000000ffffffff R15: 0000000000000003

Allocated by task 14129:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc mm/kasan/kasan.c:553 [inline]
 kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:531
 kmem_cache_alloc_trace+0x152/0x740 mm/slab.c:3625
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0x613/0x14e0 net/sched/sch_qfq.c:476
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 14129:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcf/0x220 mm/slab.c:3822
 qfq_change_class+0xd44/0x14e0 net/sched/sch_qfq.c:530
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8881dd7386c0
 which belongs to the cache kmalloc-128 of size 128
The buggy address is located 0 bytes inside of
 128-byte region [ffff8881dd7386c0, ffff8881dd738740)
The buggy address belongs to the page:
page:ffffea000775ce00 count:1 mapcount:0 mapping:ffff8881f6400640 index:0x0
flags: 0x17ffe0000000100(slab)
raw: 017ffe0000000100 ffffea00077533c8 ffffea0007760308 ffff8881f6400640
raw: 0000000000000000 ffff8881dd738000 0000000100000015 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881dd738580: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
 ffff8881dd738600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881dd738680: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
                                           ^
 ffff8881dd738700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff8881dd738780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
==================================================================
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14138 Comm: syz-executor.5 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1e6626198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fb1e66266bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14146 Comm: syz-executor.1 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fadde209198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fadde2096bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14168 Comm: syz-executor.2 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4121973198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007f41219736bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14170 Comm: syz-executor.3 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5b884b9198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007f5b884b96bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14176 Comm: syz-executor.4 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffa3d3a5198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007ffa3d3a56bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14184 Comm: syz-executor.0 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdfa74b6198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fdfa74b66bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14192 Comm: syz-executor.5 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1e6626198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fb1e66266bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14204 Comm: syz-executor.1 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fadde209198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fadde2096bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14210 Comm: syz-executor.2 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4121973198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007f41219736bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14214 Comm: syz-executor.3 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5b884fb198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00
R13: 00007f5b884fb6bc R14: 0000000000000009 R15: 0000000000000001
nla_parse: 1 callbacks suppressed
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14232 Comm: syz-executor.4 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffa3d3a5198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007ffa3d3a56bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14240 Comm: syz-executor.0 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdfa74b6198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fdfa74b66bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14248 Comm: syz-executor.5 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1e6626198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fb1e66266bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14261 Comm: syz-executor.1 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fadde209198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fadde2096bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14262 Comm: syz-executor.2 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4121973198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007f41219736bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14272 Comm: syz-executor.3 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5b884b9198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007f5b884b96bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14282 Comm: syz-executor.4 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffa3d3a5198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007ffa3d3a56bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14300 Comm: syz-executor.0 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdfa74b6198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fdfa74b66bc R14: 0000000000000009 R15: 0000000000000001
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14304 Comm: syz-executor.5 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node_trace+0x665/0x730 mm/slab.c:3666
 __do_kmalloc_node mm/slab.c:3688 [inline]
 __kmalloc_node+0x3c/0x70 mm/slab.c:3696
 kmalloc_node include/linux/slab.h:557 [inline]
 kzalloc_node include/linux/slab.h:720 [inline]
 qdisc_alloc+0xb1/0x9a0 net/sched/sch_generic.c:837
 qdisc_create_dflt+0x5e/0x1a0 net/sched/sch_generic.c:911
 qfq_change_class+0x6ae/0x14e0 net/sched/sch_qfq.c:483
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1e6626198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fb1e66266bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14306 Comm: syz-executor.1 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fadde209198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fadde2096bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 14316 Comm: syz-executor.2 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4121973198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007f41219736bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14326 Comm: syz-executor.3 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5b884b9198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007f5b884b96bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14340 Comm: syz-executor.4 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffa3d3a5198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007ffa3d3a56bc R14: 0000000000000009 R15: 0000000000000001
nla_parse: 3 callbacks suppressed
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14351 Comm: syz-executor.5 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1588
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x2cb/0x740 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 qfq_change_class+0xad9/0x14e0 net/sched/sch_qfq.c:511
 tc_ctl_tclass+0x3e9/0xba0 net/sched/sch_api.c:1993
 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2457
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x463d89
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1e6626198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000000009fa RCX: 0000000000463d89
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000008
RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053c040
R13: 00007fb1e66266bc R14: 0000000000000009 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 14352 Comm: syz-executor.0 Tainted: G    B             4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149