RBP: 00007fa1e04331d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff24e0554f R14: 00007fa1e0433300 R15: 0000000000022000
======================================================
WARNING: possible circular locking dependency detected
5.10.211 #1 Not tainted
------------------------------------------------------
syz-executor.2/26703 is trying to acquire lock:
ffff888008e30ae8 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}, at: __flush_work+0xdd/0xa90 kernel/workqueue.c:3050

but task is already holding lock:
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
ffff888008e30f40 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xef/0x1240 net/bluetooth/hci_core.c:1734
CPU: 1 PID: 26711 Comm: syz-executor.3 Not tainted 5.10.211 #1

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014

-> #3 (
Call Trace:
&hdev->req_lock){+.+.}-{3:3}
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
:
       __mutex_lock_common kernel/locking/mutex.c:968 [inline]
       __mutex_lock+0x13d/0x10b0 kernel/locking/mutex.c:1109
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
       hci_dev_do_close+0xef/0x1240 net/bluetooth/hci_core.c:1734
       hci_rfkill_set_block+0x166/0x1a0 net/bluetooth/hci_core.c:2223
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15
       rfkill_set_block+0x1fd/0x540 net/rfkill/core.c:341
       rfkill_fop_write+0x253/0x4b0 net/rfkill/core.c:1240
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260
       vfs_write+0x29a/0xa70 fs/read_write.c:603
       ksys_write+0x1f6/0x260 fs/read_write.c:658
       do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
       entry_SYSCALL_64_after_hwframe+0x62/0xc7

-> #2 (
rfkill_global_mutex){+.+.}-{3:3}
 copy_msghdr_from_user net/socket.c:2311 [inline]
 sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409
:
       __mutex_lock_common kernel/locking/mutex.c:968 [inline]
       __mutex_lock+0x13d/0x10b0 kernel/locking/mutex.c:1109
       rfkill_register+0x36/0xa10 net/rfkill/core.c:1016
       hci_register_dev+0x42e/0xc00 net/bluetooth/hci_core.c:3773
       __vhci_create_device+0x2c8/0x5c0 drivers/bluetooth/hci_vhci.c:129
       vhci_create_device drivers/bluetooth/hci_vhci.c:153 [inline]
       vhci_open_timeout+0x38/0x50 drivers/bluetooth/hci_vhci.c:310
       process_one_work+0x9a9/0x14b0 kernel/workqueue.c:2282
       worker_thread+0x61d/0x1310 kernel/workqueue.c:2428
 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428
       kthread+0x38f/0x470 kernel/kthread.c:313
       ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299

-> #1 (
&data->open_mutex){+.+.}-{3:3}
:
       __mutex_lock_common kernel/locking/mutex.c:968 [inline]
       __mutex_lock+0x13d/0x10b0 kernel/locking/mutex.c:1109
       vhci_send_frame+0x63/0xa0 drivers/bluetooth/hci_vhci.c:71
       hci_send_frame+0x1b9/0x320 net/bluetooth/hci_core.c:4060
       hci_sched_acl_pkt net/bluetooth/hci_core.c:4585 [inline]
       hci_sched_acl net/bluetooth/hci_core.c:4670 [inline]
       hci_tx_work+0x10af/0x1660 net/bluetooth/hci_core.c:4741
       process_one_work+0x9a9/0x14b0 kernel/workqueue.c:2282
       worker_thread+0x61d/0x1310 kernel/workqueue.c:2428
       kthread+0x38f/0x470 kernel/kthread.c:313
       ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299

-> #0
 ((work_completion)(&hdev->tx_work)
 __sys_sendmmsg+0x195/0x470 net/socket.c:2518
){+.+.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:2988 [inline]
       check_prevs_add kernel/locking/lockdep.c:3113 [inline]
       validate_chain kernel/locking/lockdep.c:3729 [inline]
       __lock_acquire+0x29e7/0x5b00 kernel/locking/lockdep.c:4955
       lock_acquire kernel/locking/lockdep.c:5566 [inline]
       lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531
       __flush_work+0x105/0xa90 kernel/workqueue.c:3053
       hci_dev_do_close+0x131/0x1240 net/bluetooth/hci_core.c:1745
       hci_rfkill_set_block+0x166/0x1a0 net/bluetooth/hci_core.c:2223
       rfkill_set_block+0x1fd/0x540 net/rfkill/core.c:341
       rfkill_fop_write+0x253/0x4b0 net/rfkill/core.c:1240
       vfs_write+0x29a/0xa70 fs/read_write.c:603
       ksys_write+0x1f6/0x260 fs/read_write.c:658
       do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
       entry_SYSCALL_64_after_hwframe+0x62/0xc7

other info that might help us debug this:

Chain exists of:
  (work_completion)(&hdev->tx_work)
 --> rfkill_global_mutex
 __do_sys_sendmmsg net/socket.c:2547 [inline]
 __se_sys_sendmmsg net/socket.c:2544 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544
 --> &hdev->req_lock


 Possible unsafe locking scenario:

 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
       CPU0                    CPU1
       ----                    ----
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
  lock(&hdev->req_lock
RIP: 0033:0x7f934106bb19
);
                               lock(
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
rfkill_global_mutex);
RSP: 002b:00007f933e5e1188 EFLAGS: 00000246
                               lock(&hdev->req_lock
 ORIG_RAX: 0000000000000133
);
  lock(
RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19
(work_completion)(&hdev->tx_work));
RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003

 *** DEADLOCK ***

2 locks held by syz-executor.2/26703:
RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000
 #0: ffffffff8561a828
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000
 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0xff/0x4b0 net/rfkill/core.c:1232
 #1: ffff888008e30f40 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xef/0x1240 net/bluetooth/hci_core.c:1734
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0

stack backtrace:
CPU: 0 PID: 26703 Comm: syz-executor.2 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 check_noncircular+0x263/0x2e0 kernel/locking/lockdep.c:2123
 check_prev_add kernel/locking/lockdep.c:2988 [inline]
 check_prevs_add kernel/locking/lockdep.c:3113 [inline]
 validate_chain kernel/locking/lockdep.c:3729 [inline]
 __lock_acquire+0x29e7/0x5b00 kernel/locking/lockdep.c:4955
 lock_acquire kernel/locking/lockdep.c:5566 [inline]
 lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531
 __flush_work+0x105/0xa90 kernel/workqueue.c:3053
 hci_dev_do_close+0x131/0x1240 net/bluetooth/hci_core.c:1745
 hci_rfkill_set_block+0x166/0x1a0 net/bluetooth/hci_core.c:2223
 rfkill_set_block+0x1fd/0x540 net/rfkill/core.c:341
 rfkill_fop_write+0x253/0x4b0 net/rfkill/core.c:1240
 vfs_write+0x29a/0xa70 fs/read_write.c:603
 ksys_write+0x1f6/0x260 fs/read_write.c:658
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f884d21eb19
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:00007f884a794188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f884d331f60 RCX: 00007f884d21eb19
RDX: 0000000000000008 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f884d278f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffddcc9707f R14: 00007f884a794300 R15: 0000000000022000
CPU: 1 PID: 26712 Comm: syz-executor.7 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260
 copy_msghdr_from_user net/socket.c:2311 [inline]
 sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409
 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428
 __sys_sendmmsg+0x195/0x470 net/socket.c:2518
 __do_sys_sendmmsg net/socket.c:2547 [inline]
 __se_sys_sendmmsg net/socket.c:2544 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f4475f67b19
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:00007f44734dd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f447607af60 RCX: 00007f4475f67b19
RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003
RBP: 00007f44734dd1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
R13: 00007ffea941b45f R14: 00007f44734dd300 R15: 0000000000022000
CPU: 0 PID: 26719 Comm: syz-executor.4 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x20 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 kmem_cache_alloc_node+0x55/0x330 mm/slub.c:2932
 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:198
 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963
 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286
 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387
 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382
 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349
 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422
 skb_gso_segment include/linux/netdevice.h:4768 [inline]
 validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670
 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174
 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538
 neigh_output include/net/neighbour.h:509 [inline]
 ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237
 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315
 __ip_finish_output net/ipv4/ip_output.c:303 [inline]
 ip_finish_output net/ipv4/ip_output.c:325 [inline]
 NF_HOOK_COND include/linux/netfilter.h:285 [inline]
 ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439
 dst_output include/net/dst.h:436 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590
 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965
 udp_push_pending_frames net/ipv4/udp.c:993 [inline]
 udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284
 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374
 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654
 sock_sendmsg_nosec net/socket.c:651 [inline]
 __sock_sendmsg+0xf2/0x190 net/socket.c:663
 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f570b8a2b19
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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005
RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 26731 Comm: syz-executor.4 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x20 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 slab_alloc mm/slub.c:2904 [inline]
 kmem_cache_alloc+0x5b/0x310 mm/slub.c:2909
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
 slab_post_alloc_hook mm/slab.h:534 [inline]
 slab_alloc_node mm/slub.c:2896 [inline]
 kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932
 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:198
 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963
 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286
 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387
 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382
 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349
 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422
 skb_gso_segment include/linux/netdevice.h:4768 [inline]
 validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670
 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174
 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538
 neigh_output include/net/neighbour.h:509 [inline]
 ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237
 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315
 __ip_finish_output net/ipv4/ip_output.c:303 [inline]
 ip_finish_output net/ipv4/ip_output.c:325 [inline]
 NF_HOOK_COND include/linux/netfilter.h:285 [inline]
 ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439
 dst_output include/net/dst.h:436 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590
 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965
 udp_push_pending_frames net/ipv4/udp.c:993 [inline]
 udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284
 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374
 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654
 sock_sendmsg_nosec net/socket.c:651 [inline]
 __sock_sendmsg+0xf2/0x190 net/socket.c:663
 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f570b8a2b19
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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005
RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 26748 Comm: syz-executor.3 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260
 copy_msghdr_from_user net/socket.c:2311 [inline]
 sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409
 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428
 __sys_sendmmsg+0x195/0x470 net/socket.c:2518
 __do_sys_sendmmsg net/socket.c:2547 [inline]
 __se_sys_sendmmsg net/socket.c:2544 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f934106bb19
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:00007f933e5e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19
RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003
RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 26863 Comm: syz-executor.4 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x20 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 __kmalloc_node_track_caller+0x74/0x3b0 mm/slub.c:4496
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:210
 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963
 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286
 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387
 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382
 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349
 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422
 skb_gso_segment include/linux/netdevice.h:4768 [inline]
 validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670
 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174
 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538
 neigh_output include/net/neighbour.h:509 [inline]
 ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237
 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315
 __ip_finish_output net/ipv4/ip_output.c:303 [inline]
 ip_finish_output net/ipv4/ip_output.c:325 [inline]
 NF_HOOK_COND include/linux/netfilter.h:285 [inline]
 ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439
 dst_output include/net/dst.h:436 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590
 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965
 udp_push_pending_frames net/ipv4/udp.c:993 [inline]
 udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284
 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654
 sock_sendmsg_nosec net/socket.c:651 [inline]
 __sock_sendmsg+0xf2/0x190 net/socket.c:663
 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f570b8a2b19
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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005
RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000
CPU: 1 PID: 26874 Comm: syz-executor.7 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
 copy_msghdr_from_user net/socket.c:2311 [inline]
 sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409
 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428
 __sys_sendmmsg+0x195/0x470 net/socket.c:2518
 __do_sys_sendmmsg net/socket.c:2547 [inline]
 __se_sys_sendmmsg net/socket.c:2544 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f4475f67b19
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:00007f44734dd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f447607af60 RCX: 00007f4475f67b19
RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003
RBP: 00007f44734dd1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffea941b45f R14: 00007f44734dd300 R15: 0000000000022000
CPU: 0 PID: 26875 Comm: syz-executor.3 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 copy_msghdr_from_user net/socket.c:2311 [inline]
 sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409
 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428
 __sys_sendmmsg+0x195/0x470 net/socket.c:2518
 __do_sys_sendmmsg net/socket.c:2547 [inline]
 __se_sys_sendmmsg net/socket.c:2544 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f934106bb19
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:00007f933e5e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19
RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003
RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000
CPU: 1 PID: 26867 Comm: syz-executor.6 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x20 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 __kmalloc_node_track_caller+0x74/0x3b0 mm/slub.c:4496
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:210
 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963
 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286
 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387
 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382
 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349
 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422
 skb_gso_segment include/linux/netdevice.h:4768 [inline]
 validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670
 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174
 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538
 neigh_output include/net/neighbour.h:509 [inline]
 ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237
 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315
 __ip_finish_output net/ipv4/ip_output.c:303 [inline]
 ip_finish_output net/ipv4/ip_output.c:325 [inline]
 NF_HOOK_COND include/linux/netfilter.h:285 [inline]
 ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439
 dst_output include/net/dst.h:436 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590
 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965
 udp_push_pending_frames net/ipv4/udp.c:993 [inline]
 udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284
 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374
 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654
 sock_sendmsg_nosec net/socket.c:651 [inline]
 __sock_sendmsg+0xf2/0x190 net/socket.c:663
 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7fa1e2ebdb19
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:00007fa1e0433188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa1e2fd0f60 RCX: 00007fa1e2ebdb19
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005
RBP: 00007fa1e04331d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff24e0554f R14: 00007fa1e0433300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26883 Comm: syz-executor.4 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x20 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 slab_alloc mm/slub.c:2904 [inline]
 kmem_cache_alloc+0x5b/0x310 mm/slub.c:2909
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
 slab_post_alloc_hook mm/slab.h:534 [inline]
 slab_alloc_node mm/slub.c:2896 [inline]
 __kmalloc_node_track_caller+0x1a6/0x3b0 mm/slub.c:4496
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:210
 skb_segment+0x9d8/0x3aa0 net/core/skbuff.c:3963
 __udp_gso_segment+0x11c6/0x1830 net/ipv4/udp_offload.c:286
 udp4_ufo_fragment+0x528/0x720 net/ipv4/udp_offload.c:387
 inet_gso_segment+0x4fb/0x11a0 net/ipv4/af_inet.c:1382
 skb_mac_gso_segment+0x273/0x570 net/core/dev.c:3349
 __skb_gso_segment+0x32d/0x6d0 net/core/dev.c:3422
 skb_gso_segment include/linux/netdevice.h:4768 [inline]
 validate_xmit_skb.constprop.0+0x4fe/0xda0 net/core/dev.c:3670
 __dev_queue_xmit+0x87b/0x2710 net/core/dev.c:4174
 neigh_connected_output+0x382/0x4d0 net/core/neighbour.c:1538
 neigh_output include/net/neighbour.h:509 [inline]
 ip_finish_output2+0x6f1/0x21f0 net/ipv4/ip_output.c:237
 __ip_finish_output.part.0+0x5f3/0xb50 net/ipv4/ip_output.c:315
 __ip_finish_output net/ipv4/ip_output.c:303 [inline]
 ip_finish_output net/ipv4/ip_output.c:325 [inline]
 NF_HOOK_COND include/linux/netfilter.h:285 [inline]
 ip_output+0x2f7/0x600 net/ipv4/ip_output.c:439
 dst_output include/net/dst.h:436 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0xdd/0x260 net/ipv4/ip_output.c:1590
 udp_send_skb+0x6da/0x11d0 net/ipv4/udp.c:965
 udp_push_pending_frames net/ipv4/udp.c:993 [inline]
 udp_sendmsg+0x139a/0x2170 net/ipv4/udp.c:1284
 udpv6_sendmsg+0x1bed/0x2af0 net/ipv6/udp.c:1374
 inet6_sendmsg+0x105/0x140 net/ipv6/af_inet6.c:654
 sock_sendmsg_nosec net/socket.c:651 [inline]
 __sock_sendmsg+0xf2/0x190 net/socket.c:663
 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f570b8a2b19
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:00007f5708e18188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f570b9b5f60 RCX: 00007f570b8a2b19
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005
RBP: 00007f5708e181d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe4ad8036f R14: 00007f5708e18300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26896 Comm: syz-executor.3 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260
 copy_msghdr_from_user net/socket.c:2311 [inline]
 sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409
 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428
 __sys_sendmmsg+0x195/0x470 net/socket.c:2518
 __do_sys_sendmmsg net/socket.c:2547 [inline]
 __se_sys_sendmmsg net/socket.c:2544 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f934106bb19
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:00007f933e5e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f934117ef60 RCX: 00007f934106bb19
RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003
RBP: 00007f933e5e11d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffd72bbe2f R14: 00007f933e5e1300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26901 Comm: syz-executor.7 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:15
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2260
 copy_msghdr_from_user net/socket.c:2311 [inline]
 sendmsg_copy_msghdr+0xa1/0x160 net/socket.c:2409
 ___sys_sendmsg+0xc6/0x170 net/socket.c:2428
 __sys_sendmmsg+0x195/0x470 net/socket.c:2518
 __do_sys_sendmmsg net/socket.c:2547 [inline]
 __se_sys_sendmmsg net/socket.c:2544 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2544
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7f4475f67b19
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:00007f44734dd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f447607af60 RCX: 00007f4475f67b19
RDX: 000000007ffff000 RSI: 0000000020004d00 RDI: 0000000000000003
RBP: 00007f44734dd1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffea941b45f R14: 00007f44734dd300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26916 Comm: syz-executor.6 Not tainted 5.10.211 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x20 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 slab_alloc mm/slub.c:2904 [inline]
 kmem_cache_alloc+0x5b/0x310 mm/slub.c:2909
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
   9:	00 00 00
   c:	0f 1f 40 00          	nopl   0x0(%rax)
  10:	48 89 f8             	mov    %rdi,%rax
  13:	48 89 f7             	mov    %rsi,%rdi
  16:	48 89 d6             	mov    %rdx,%rsi
  19:	48 89 ca             	mov    %rcx,%rdx
  1c:	4d 89 c2             	mov    %r8,%r10
  1f:	4d 89 c8             	mov    %r9,%r8
  22:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  27:	0f 05                	syscall
* 29:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  2f:	73 01                	jae    0x32
  31:	c3                   	retq
  32:	48 c7 c1 bc ff ff ff 	mov    $0xffffffffffffffbc,%rcx
  39:	f7 d8                	neg    %eax
  3b:	64 89 01             	mov    %eax,%fs:(%rcx)
  3e:	48                   	rex.W