bisecting fixing commit since 9b15f7fae677336e04b9e026ff91854e43165455 building syzkaller on 5d7b90f1af2e3bf33992b75e7fcf0bab6bf49bd6 testing commit 9b15f7fae677336e04b9e026ff91854e43165455 with gcc (GCC) 8.4.1 20210217 kernel signature: ca9eb00a938e7eb6dc52de7721e368b7fe6a95e75ff6ea539abb69a3006a3939 run #0: crashed: WARNING in corrupted run #1: crashed: WARNING in corrupted run #2: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #3: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #4: crashed: WARNING in corrupted run #5: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #6: crashed: WARNING in corrupted run #7: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #8: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #9: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #10: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #11: crashed: WARNING in corrupted run #12: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #13: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #14: crashed: WARNING in corrupted run #15: crashed: WARNING in corrupted run #16: crashed: WARNING in corrupted run #17: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #18: crashed: WARNING in corrupted run #19: crashed: WARNING in corrupted testing current HEAD 2965db2e004cf9c92b87c1f559e9812c0ae878c1 testing commit 2965db2e004cf9c92b87c1f559e9812c0ae878c1 with gcc (GCC) 8.4.1 20210217 kernel signature: 8c60f05793371d4bf2eea73210c4ccd8240c1eca04bfcaf6ce3fb9a88c2c0f40 run #0: crashed: WARNING in corrupted run #1: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #2: crashed: WARNING in corrupted run #3: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #4: crashed: WARNING in corrupted run #5: crashed: WARNING in corrupted run #6: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #7: crashed: WARNING in batadv_iv_send_outstanding_bat_ogm_packet run #8: crashed: WARNING in corrupted run #9: crashed: WARNING in corrupted revisions tested: 2, total time: 29m33.046834973s (build: 21m58.141942567s, test: 6m31.709394448s) the crash still happens on HEAD commit msg: Linux 4.19.188 crash: WARNING in corrupted ------------[ cut here ]------------ 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 WARNING: CPU: 1 PID: 6615 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] WARNING: CPU: 1 PID: 6615 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 __should_failslab+0xba/0xf0 mm/failslab.c:32 Modules linked in: should_failslab+0x9/0x20 mm/slab_common.c:1588 CPU: 1 PID: 6615 Comm: kworker/u4:6 Not tainted 4.19.188-syzkaller #0 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 Code: 87 e8 48 6e ea ff 0f 0b e9 a7 5c cd ff 48 c7 c7 80 7c d9 87 e8 35 6e ea ff e9 96 5c cd ff 48 c7 c7 40 79 d9 87 e8 24 6e ea ff <0f> 0b e9 83 5c cd ff 48 c7 c7 40 79 d9 87 e8 11 6e ea ff 0f 0b 4c RSP: 0018:ffff8881d09b7ce0 EFLAGS: 00010282 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 RAX: 0000000000000024 RBX: ffff8881f3dd6408 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b560 RDI: ffffffff8a18b9a0 RBP: ffff8881d09b7d58 R08: ffffed103ed25079 R09: ffffed103ed25078 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881e25c47c0 R13: ffff8881f3dd64a0 R14: ffff8881f3dd63c0 R15: ffff8881d18d8040 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd1aafe6e8 CR3: 000000000846d005 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x830/0x1670 kernel/workqueue.c:2152 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 worker_thread+0x85/0xb60 kernel/workqueue.c:2295 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 kthread+0x347/0x410 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:632 irq event stamp: 1591626 ___sys_sendmsg+0x647/0x950 net/socket.c:2115 hardirqs last enabled at (1591625): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (1591625): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (1591626): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1591604): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (1591604): [] batadv_forw_packet_steal+0x107/0x180 net/batman-adv/send.c:606 softirqs last disabled at (1591602): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (1591602): [] batadv_forw_packet_steal+0x1b/0x180 net/batman-adv/send.c:595 ---[ end trace 243362fa76d4ceef ]--- __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: 0033:0x463fd9 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:00007f7c2bc1e198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f7c2bc1e6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 1 PID: 7285 Comm: syz-executor.1 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node+0x262/0x720 mm/slab.c:3647 __alloc_skb+0xa7/0x580 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007fbd7f02c198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fbd7f02c6bc R14: 0000000000000006 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7295 Comm: syz-executor.2 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007fe67ffe1198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fe67ffe16bc R14: 0000000000000006 R15: 0000000000000001 CPU: 0 PID: 7299 Comm: syz-executor.0 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007efe23153198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007efe231536bc R14: 0000000000000006 R15: 0000000000000001 CPU: 1 PID: 7296 Comm: syz-executor.3 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f1e8ae3f198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f1e8ae3f6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 0 PID: 7300 Comm: syz-executor.4 Tainted: G W 4.19.188-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] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2ce/0x760 mm/slab.c:3742 kstrdup+0x2c/0x60 mm/util.c:56 kstrdup_const+0x1f/0x30 mm/util.c:77 __kernfs_new_node+0xb0/0x6f0 fs/kernfs/dir.c:629 kernfs_new_node+0x62/0x110 fs/kernfs/dir.c:693 kernfs_create_link+0xb4/0x230 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd.isra.2+0x7d/0xf0 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x43/0xb0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add+0x9c/0xd0 net/core/dev.c:6948 __netdev_adjacent_dev_insert net/core/dev.c:7003 [inline] __netdev_adjacent_dev_insert+0x46d/0x7b0 net/core/dev.c:6971 __netdev_adjacent_dev_link_lists net/core/dev.c:7080 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7109 [inline] __netdev_upper_dev_link+0x1e8/0x790 net/core/dev.c:7168 netdev_master_upper_dev_link+0x17/0x20 net/core/dev.c:7232 batadv_hardif_enable_interface+0x1f8/0x9e0 net/batman-adv/hard-interface.c:773 batadv_softif_slave_add+0x7f/0xd0 net/batman-adv/soft-interface.c:898 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x171/0x200 net/core/rtnetlink.c:2295 do_setlink+0x941/0x2e10 net/core/rtnetlink.c:2455 rtnl_newlink+0x97f/0x1340 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f7c2bc1e198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f7c2bc1e6bc R14: 0000000000000006 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7297 Comm: syz-executor.1 Tainted: G W 4.19.188-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] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2ce/0x760 mm/slab.c:3742 kstrdup+0x2c/0x60 mm/util.c:56 kstrdup_const+0x1f/0x30 mm/util.c:77 __kernfs_new_node+0xb0/0x6f0 fs/kernfs/dir.c:629 ------------[ cut here ]------------ kernfs_new_node+0x62/0x110 fs/kernfs/dir.c:693 kernfs_create_link+0xb4/0x230 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd.isra.2+0x7d/0xf0 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x43/0xb0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add+0x9c/0xd0 net/core/dev.c:6948 __netdev_adjacent_dev_insert net/core/dev.c:7003 [inline] __netdev_adjacent_dev_insert+0x46d/0x7b0 net/core/dev.c:6971 __netdev_adjacent_dev_link_lists net/core/dev.c:7080 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7109 [inline] __netdev_upper_dev_link+0x1e8/0x790 net/core/dev.c:7168 netdev_master_upper_dev_link+0x17/0x20 net/core/dev.c:7232 WARNING: CPU: 0 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] WARNING: CPU: 0 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 batadv_hardif_enable_interface+0x1f8/0x9e0 net/batman-adv/hard-interface.c:773 Modules linked in: batadv_softif_slave_add+0x7f/0xd0 net/batman-adv/soft-interface.c:898 CPU: 0 PID: 31 Comm: kworker/u4:2 Tainted: G W 4.19.188-syzkaller #0 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x171/0x200 net/core/rtnetlink.c:2295 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 do_setlink+0x941/0x2e10 net/core/rtnetlink.c:2455 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 Code: 87 e8 48 6e ea ff 0f 0b e9 a7 5c cd ff 48 c7 c7 80 7c d9 87 e8 35 6e ea ff e9 96 5c cd ff 48 c7 c7 40 79 d9 87 e8 24 6e ea ff <0f> 0b e9 83 5c cd ff 48 c7 c7 40 79 d9 87 e8 11 6e ea ff 0f 0b 4c RSP: 0018:ffff8881f51ffce0 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f4000608 RCX: 0000000000000000 rtnl_newlink+0x97f/0x1340 net/core/rtnetlink.c:3077 RDX: 0000000000000000 RSI: ffffffff8767b560 RDI: ffffffff8a18b9a0 RBP: ffff8881f51ffd58 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e20cc9c0 R13: ffff8881f40006a0 R14: ffff8881f40005c0 R15: ffff8881e1bfd200 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f988a357740 CR3: 000000000846d001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x830/0x1670 kernel/workqueue.c:2152 worker_thread+0x85/0xb60 kernel/workqueue.c:2295 kthread+0x347/0x410 kernel/kthread.c:259 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 irq event stamp: 1782532 hardirqs last enabled at (1782531): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (1782531): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (1782532): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1782526): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 softirqs last disabled at (1782505): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (1782505): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 ---[ end trace 243362fa76d4cef0 ]--- netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007fbd7f02c198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fbd7f02c6bc R14: 0000000000000006 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7304 Comm: syz-executor.5 Tainted: G W 4.19.188-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] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2ce/0x760 mm/slab.c:3742 kstrdup+0x2c/0x60 mm/util.c:56 kstrdup_const+0x1f/0x30 mm/util.c:77 __kernfs_new_node+0xb0/0x6f0 fs/kernfs/dir.c:629 kernfs_new_node+0x62/0x110 fs/kernfs/dir.c:693 kernfs_create_link+0xb4/0x230 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd.isra.2+0x7d/0xf0 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x43/0xb0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add+0x9c/0xd0 net/core/dev.c:6948 __netdev_adjacent_dev_insert net/core/dev.c:7003 [inline] __netdev_adjacent_dev_insert+0x46d/0x7b0 net/core/dev.c:6971 __netdev_adjacent_dev_link_lists net/core/dev.c:7080 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7109 [inline] __netdev_upper_dev_link+0x1e8/0x790 net/core/dev.c:7168 netdev_master_upper_dev_link+0x17/0x20 net/core/dev.c:7232 batadv_hardif_enable_interface+0x1f8/0x9e0 net/batman-adv/hard-interface.c:773 batadv_softif_slave_add+0x7f/0xd0 net/batman-adv/soft-interface.c:898 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x171/0x200 net/core/rtnetlink.c:2295 do_setlink+0x941/0x2e10 net/core/rtnetlink.c:2455 rtnl_newlink+0x97f/0x1340 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f20bfcbb198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bfa8 R13: 00007f20bfcbb6bc R14: 0000000000000005 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7306 Comm: syz-executor.2 Tainted: G W 4.19.188-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] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2ce/0x760 mm/slab.c:3742 kstrdup+0x2c/0x60 mm/util.c:56 kstrdup_const+0x1f/0x30 mm/util.c:77 __kernfs_new_node+0xb0/0x6f0 fs/kernfs/dir.c:629 kernfs_new_node+0x62/0x110 fs/kernfs/dir.c:693 kernfs_create_link+0xb4/0x230 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd.isra.2+0x7d/0xf0 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x43/0xb0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add+0x9c/0xd0 net/core/dev.c:6948 __netdev_adjacent_dev_insert net/core/dev.c:7003 [inline] __netdev_adjacent_dev_insert+0x46d/0x7b0 net/core/dev.c:6971 __netdev_adjacent_dev_link_lists net/core/dev.c:7080 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7109 [inline] __netdev_upper_dev_link+0x1e8/0x790 net/core/dev.c:7168 netdev_master_upper_dev_link+0x17/0x20 net/core/dev.c:7232 batadv_hardif_enable_interface+0x1f8/0x9e0 net/batman-adv/hard-interface.c:773 batadv_softif_slave_add+0x7f/0xd0 net/batman-adv/soft-interface.c:898 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x171/0x200 net/core/rtnetlink.c:2295 do_setlink+0x941/0x2e10 net/core/rtnetlink.c:2455 rtnl_newlink+0x97f/0x1340 net/core/rtnetlink.c:3077 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] WARNING: CPU: 0 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 Modules linked in: CPU: 0 PID: 31 Comm: kworker/u4:2 Tainted: G W 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 Code: 87 e8 48 6e ea ff 0f 0b e9 a7 5c cd ff 48 c7 c7 80 7c d9 87 e8 35 6e ea ff e9 96 5c cd ff 48 c7 c7 40 79 d9 87 e8 24 6e ea ff <0f> 0b e9 83 5c cd ff 48 c7 c7 40 79 d9 87 e8 11 6e ea ff 0f 0b 4c RSP: 0018:ffff8881f51ffce0 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881f4014b88 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b560 RDI: ffffffff8a18b9a0 RBP: ffff8881f51ffd58 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881e2e44440 R13: ffff8881f4014c20 R14: ffff8881f4014b40 R15: ffff8881e6abbb00 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f20bfcdbf88 CR3: 000000000846d002 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778 process_one_work+0x830/0x1670 kernel/workqueue.c:2152 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 worker_thread+0x85/0xb60 kernel/workqueue.c:2295 kthread+0x347/0x410 kernel/kthread.c:259 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 irq event stamp: 2062308 hardirqs last enabled at (2062307): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (2062307): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (2062308): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2062304): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 softirqs last disabled at (2062285): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2062285): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 ---[ end trace 243362fa76d4cef1 ]--- 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: 0033:0x463fd9 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:00007fe67ffe1198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fe67ffe16bc R14: 0000000000000006 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7311 Comm: syz-executor.3 Tainted: G W 4.19.188-syzkaller #0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 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 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 should_failslab+0x9/0x20 mm/slab_common.c:1588 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 ------------[ cut here ]------------ netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 WARNING: CPU: 0 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] WARNING: CPU: 0 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 Modules linked in: rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 CPU: 0 PID: 31 Comm: kworker/u4:2 Tainted: G W 4.19.188-syzkaller #0 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 Code: 87 e8 48 6e ea ff 0f 0b e9 a7 5c cd ff 48 c7 c7 80 7c d9 87 e8 35 6e ea ff e9 96 5c cd ff 48 c7 c7 40 79 d9 87 e8 24 6e ea ff <0f> 0b e9 83 5c cd ff 48 c7 c7 40 79 d9 87 e8 11 6e ea ff 0f 0b 4c RSP: 0018:ffff8881f51ffce0 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881dfa07a88 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b560 RDI: ffffffff8a18b9a0 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 RBP: ffff8881f51ffd58 R08: ffffed103ed05079 R09: ffffed103ed05078 R10: ffffed103ed05078 R11: ffff8881f68283c7 R12: ffff8881ed7c4c40 R13: ffff8881dfa07b20 R14: ffff8881dfa07a40 R15: ffff8881e0b91240 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:632 CR2: 00007fa065023000 CR3: 000000000846d002 CR4: 00000000001606f0 ___sys_sendmsg+0x647/0x950 net/socket.c:2115 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x830/0x1670 kernel/workqueue.c:2152 __sys_sendmsg+0xd9/0x180 net/socket.c:2153 worker_thread+0x85/0xb60 kernel/workqueue.c:2295 kthread+0x347/0x410 kernel/kthread.c:259 __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 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 RIP: 0033:0x463fd9 irq event stamp: 2131020 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 hardirqs last enabled at (2131019): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (2131019): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 RSP: 002b:00007f1e8ae3f198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e hardirqs last disabled at (2131020): [] trace_hardirqs_off_thunk+0x1a/0x1c RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 softirqs last enabled at (2131016): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 softirqs last disabled at (2130997): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2130997): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 ---[ end trace 243362fa76d4cef2 ]--- R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f1e8ae3f6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 0 PID: 7327 Comm: syz-executor.5 Tainted: G W 4.19.188-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 ------------[ cut here ]------------ 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 WARNING: CPU: 1 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] WARNING: CPU: 1 PID: 31 at net/batman-adv/bat_iv_ogm.c:597 batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 should_failslab+0x9/0x20 mm/slab_common.c:1588 Modules linked in: slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 CPU: 1 PID: 31 Comm: kworker/u4:2 Tainted: G W 4.19.188-syzkaller #0 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:597 [inline] RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet.cold.25+0x30/0x37 net/batman-adv/bat_iv_ogm.c:1857 Code: 87 e8 48 6e ea ff 0f 0b e9 a7 5c cd ff 48 c7 c7 80 7c d9 87 e8 35 6e ea ff e9 96 5c cd ff 48 c7 c7 40 79 d9 87 e8 24 6e ea ff <0f> 0b e9 83 5c cd ff 48 c7 c7 40 79 d9 87 e8 11 6e ea ff 0f 0b 4c alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 RSP: 0018:ffff8881f51ffce0 EFLAGS: 00010282 RAX: 0000000000000024 RBX: ffff8881ecb55cc8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8767b560 RDI: ffffffff8a18b9a0 RBP: ffff8881f51ffd58 R08: ffffed103ed25079 R09: ffffed103ed25078 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 R10: ffffed103ed25078 R11: ffff8881f69283c7 R12: ffff8881e5d359c0 R13: ffff8881ecb55d60 R14: ffff8881ecb55c80 R15: ffff8881d0de1b40 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005622586f30e0 CR3: 000000000846d004 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 Call Trace: process_one_work+0x830/0x1670 kernel/workqueue.c:2152 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 worker_thread+0x85/0xb60 kernel/workqueue.c:2295 kthread+0x347/0x410 kernel/kthread.c:259 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:632 ___sys_sendmsg+0x647/0x950 net/socket.c:2115 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 irq event stamp: 2150590 hardirqs last enabled at (2150589): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (2150589): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (2150590): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2150566): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (2150566): [] batadv_forw_packet_steal+0x107/0x180 net/batman-adv/send.c:606 softirqs last disabled at (2150564): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (2150564): [] batadv_forw_packet_steal+0x1b/0x180 net/batman-adv/send.c:595 ---[ end trace 243362fa76d4cef3 ]--- FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 __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: 0033:0x463fd9 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:00007f20bfcdc198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f20bfcdc6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 1 PID: 7330 Comm: syz-executor.2 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007fe67ffe1198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fe67ffe16bc R14: 0000000000000005 R15: 0000000000000001 CPU: 0 PID: 7318 Comm: syz-executor.4 Tainted: G W 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f7c2bc1e198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f7c2bc1e6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 1 PID: 7337 Comm: syz-executor.3 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f1e8ae3f198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f1e8ae3f6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 0 PID: 7316 Comm: syz-executor.0 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007efe23153198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007efe231536bc R14: 0000000000000006 R15: 0000000000000001 CPU: 1 PID: 7324 Comm: syz-executor.1 Tainted: G W 4.19.188-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 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 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: 0033:0x463fd9 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 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 RSP: 002b:00007fbd7f02c198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fbd7f02c6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 0 PID: 7354 Comm: syz-executor.3 Tainted: G W 4.19.188-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] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2ce/0x760 mm/slab.c:3742 kstrdup+0x2c/0x60 mm/util.c:56 kstrdup_const+0x1f/0x30 mm/util.c:77 __kernfs_new_node+0xb0/0x6f0 fs/kernfs/dir.c:629 kernfs_new_node+0x62/0x110 fs/kernfs/dir.c:693 kernfs_create_link+0xb4/0x230 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd.isra.2+0x7d/0xf0 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x43/0xb0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add+0x9c/0xd0 net/core/dev.c:6948 __netdev_adjacent_dev_insert net/core/dev.c:7003 [inline] __netdev_adjacent_dev_insert+0x46d/0x7b0 net/core/dev.c:6971 __netdev_adjacent_dev_link_lists net/core/dev.c:7080 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7109 [inline] __netdev_upper_dev_link+0x1e8/0x790 net/core/dev.c:7168 netdev_master_upper_dev_link+0x17/0x20 net/core/dev.c:7232 batadv_hardif_enable_interface+0x1f8/0x9e0 net/batman-adv/hard-interface.c:773 batadv_softif_slave_add+0x7f/0xd0 net/batman-adv/soft-interface.c:898 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x171/0x200 net/core/rtnetlink.c:2295 do_setlink+0x941/0x2e10 net/core/rtnetlink.c:2455 rtnl_newlink+0x97f/0x1340 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f1e8ae3f198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f1e8ae3f6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 1 PID: 7346 Comm: syz-executor.0 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007efe23153198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007efe231536bc R14: 0000000000000006 R15: 0000000000000001 CPU: 0 PID: 7350 Comm: syz-executor.5 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f20bfcdc198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f20bfcdc6bc R14: 0000000000000006 R15: 0000000000000001 CPU: 1 PID: 7355 Comm: syz-executor.2 Tainted: G W 4.19.188-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_node mm/slab.c:3304 [inline] kmem_cache_alloc_node_trace+0x265/0x730 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3703 __kmalloc_reserve.isra.41+0x2c/0xc0 net/core/skbuff.c:137 __alloc_skb+0xd7/0x580 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x217/0xa70 net/netlink/af_netlink.c:2389 netlink_rcv_skb+0x2a8/0x3d0 net/netlink/af_netlink.c:2461 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007fe67ffe1198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007fe67ffe16bc R14: 0000000000000006 R15: 0000000000000001 CPU: 0 PID: 7357 Comm: syz-executor.4 Tainted: G W 4.19.188-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] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2ce/0x760 mm/slab.c:3742 kstrdup+0x2c/0x60 mm/util.c:56 kstrdup_const+0x1f/0x30 mm/util.c:77 __kernfs_new_node+0xb0/0x6f0 fs/kernfs/dir.c:629 kernfs_new_node+0x62/0x110 fs/kernfs/dir.c:693 kernfs_create_link+0xb4/0x230 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd.isra.2+0x7d/0xf0 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x43/0xb0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add+0x9c/0xd0 net/core/dev.c:6948 __netdev_adjacent_dev_insert net/core/dev.c:7003 [inline] __netdev_adjacent_dev_insert+0x46d/0x7b0 net/core/dev.c:6971 __netdev_adjacent_dev_link_lists net/core/dev.c:7080 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7109 [inline] __netdev_upper_dev_link+0x1e8/0x790 net/core/dev.c:7168 netdev_master_upper_dev_link+0x17/0x20 net/core/dev.c:7232 batadv_hardif_enable_interface+0x1f8/0x9e0 net/batman-adv/hard-interface.c:773 batadv_softif_slave_add+0x7f/0xd0 net/batman-adv/soft-interface.c:898 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x171/0x200 net/core/rtnetlink.c:2295 do_setlink+0x941/0x2e10 net/core/rtnetlink.c:2455 rtnl_newlink+0x97f/0x1340 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909 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: 0033:0x463fd9 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:00007f7c2bc1e198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000009cb RCX: 0000000000463fd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000000002e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000053bf00 R13: 00007f7c2bc1e6bc R14: 0000000000000006 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7365 Comm: syz-executor.0 Tainted: G W 4.19.188-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] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2ce/0x760 mm/slab.c:3742 kstrdup+0x2c/0x60 mm/util.c:56 kstrdup_const+0x1f/0x30 mm/util.c:77 __kernfs_new_node+0xb0/0x6f0 fs/kernfs/dir.c:629 kernfs_new_node+0x62/0x110 fs/kernfs/dir.c:693 kernfs_create_link+0xb4/0x230 fs/kernfs/symlink.c:40 sysfs_do_create_link_sd.isra.2+0x7d/0xf0 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x43/0xb0 fs/sysfs/symlink.c:91 netdev_adjacent_sysfs_add+0x9c/0xd0 net/core/dev.c:6948 __netdev_adjacent_dev_insert net/core/dev.c:7003 [inline] __netdev_adjacent_dev_insert+0x46d/0x7b0 net/core/dev.c:6971 __netdev_adjacent_dev_link_lists net/core/dev.c:7080 [inline] __netdev_adjacent_dev_link_neighbour net/core/dev.c:7109 [inline] __netdev_upper_dev_link+0x1e8/0x790 net/core/dev.c:7168 netdev_master_upper_dev_link+0x17/0x20 net/core/dev.c:7232 batadv_hardif_enable_interface+0x1f8/0x9e0 net/batman-adv/hard-interface.c:773 batadv_softif_slave_add+0x7f/0xd0 net/batman-adv/soft-interface.c:898 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x171/0x200 net/core/rtnetlink.c:2295 do_setlink+0x941/0x2e10 net/core/rtnetlink.c:2455 rtnl_newlink+0x97f/0x1340 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x13e/0x3d0 net/netlink/af_netlink.c:2455 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4796 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x764/0xc60 net/netlink/af_netlink.c:1909