BUG: soft lockup in ieee802154_rcv

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syzbot

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Sep 16, 2021, 7:47:25 PM9/16/21
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Hello,

syzbot found the following issue on:

HEAD commit: b172b44fcb17 Linux 4.19.206
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1351acf3300000
kernel config: https://syzkaller.appspot.com/x/.config?x=b9ba3521ce0be3cd
dashboard link: https://syzkaller.appspot.com/bug?extid=e32dac4b0e075cc77bd9
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e32dac...@syzkaller.appspotmail.com

team0: Device ipvlan1 failed to register rx_handler
orangefs_mount: mount request failed with -4
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:23867]
Modules linked in:
irq event stamp: 2603491
hardirqs last enabled at (2603490): [<ffffffff81003ce4>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (2603491): [<ffffffff81003d00>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (43880): [<ffffffff86766be5>] rcu_read_unlock_bh include/linux/rcupdate.h:717 [inline]
softirqs last enabled at (43880): [<ffffffff86766be5>] __dev_queue_xmit+0x15f5/0x2e00 net/core/dev.c:3865
softirqs last disabled at (43881): [<ffffffff88200daa>] do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
CPU: 1 PID: 23867 Comm: syz-executor.3 Not tainted 4.19.206-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unwind_next_frame+0x159/0x1400 arch/x86/kernel/unwind_orc.c:410
Code: 18 e8 5b ea 17 00 49 8d 46 50 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 33 0f 00 00 <4d> 8b 6e 50 4d 85 ed 74 30 49 8d bd 88 00 00 00 48 b8 00 00 00 00
RSP: 0018:ffff8880ba107730 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff11017420eef RCX: 0000000000000000
RDX: 1ffff11017420f16 RSI: ffff8880ba1076c0 RDI: 0000000000000001
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001
R10: ffff8880ba1078bf R11: 0000000000074071 R12: ffff8880ba1078a8
R13: 0000000000000000 R14: ffff8880ba107860 R15: 00000000000000e8
FS: 00007f51b1c82700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ef26000 CR3: 0000000235246000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
__save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:448 [inline]
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553
kmem_cache_alloc+0x122/0x370 mm/slab.c:3559
skb_clone+0x151/0x3d0 net/core/skbuff.c:1293
ieee802154_dgram_deliver net/ieee802154/socket.c:822 [inline]
ieee802154_rcv+0x5b8/0x6f0 net/ieee802154/socket.c:1099
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954
__netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066
netif_receive_skb_internal+0xf0/0x3f0 net/core/dev.c:5156
ieee802154_deliver_skb net/mac802154/rx.c:37 [inline]
ieee802154_subif_frame net/mac802154/rx.c:110 [inline]
__ieee802154_rx_handle_packet net/mac802154/rx.c:220 [inline]
ieee802154_rx+0x1335/0x1980 net/mac802154/rx.c:292
ieee802154_tasklet_handler+0xd9/0x100 net/mac802154/main.c:43
tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
__do_softirq+0x265/0x980 kernel/softirq.c:292
do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
</IRQ>
do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
do_softirq kernel/softirq.c:328 [inline]
__local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
local_bh_enable include/linux/bottom_half.h:32 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:721 [inline]
__dev_queue_xmit+0x1628/0x2e00 net/core/dev.c:3865
dgram_sendmsg+0x9c5/0xd10 net/ieee802154/socket.c:697
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xc3/0x120 net/socket.c:661
___sys_sendmsg+0x3b3/0x8e0 net/socket.c:2227
__sys_sendmmsg+0x195/0x470 net/socket.c:2322
__do_sys_sendmmsg net/socket.c:2351 [inline]
__se_sys_sendmmsg net/socket.c:2348 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2348
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f51b470b739
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:00007f51b1c82188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f51b480ff80 RCX: 00007f51b470b739
RDX: 0400000000000116 RSI: 0000000020002240 RDI: 0000000000000005
RBP: 00007f51b4765cc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f51b480ff80
R13: 00007ffca577f13f R14: 00007f51b1c82300 R15: 0000000000022000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 578 Comm: kworker/u4:3 Not tainted 4.19.206-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:97
Code: ff 48 89 df e8 11 d3 35 00 e9 ab fe ff ff 4c 89 ef e8 04 d3 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 7c 4c 9f 7e 81 e2
RSP: 0018:ffff8880ba007f38 EFLAGS: 00000006
RAX: ffff8880b46b8340 RBX: ffffffff89e090f8 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff8868d9c0 RDI: ffffffff88b3e0e0
RBP: ffffffff88b3e0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000006
R13: ffffffff8868d9c0 R14: 0000000000000006 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555abf848 CR3: 00000000b2eb8000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
check_preemption_disabled+0x15/0x280 lib/smp_processor_id.c:13
__do_softirq+0x532/0x980 kernel/softirq.c:307
do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
</IRQ>
do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336
do_softirq kernel/softirq.c:328 [inline]
__local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
spin_unlock_bh include/linux/spinlock.h:374 [inline]
batadv_nc_purge_paths+0x22d/0x310 net/batman-adv/network-coding.c:482
batadv_nc_worker+0x6fa/0xd50 net/batman-adv/network-coding.c:731
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e8 5b ea 17 00 callq 0x17ea60
5: 49 8d 46 50 lea 0x50(%r14),%rax
9: 48 89 c2 mov %rax,%rdx
c: 48 89 44 24 08 mov %rax,0x8(%rsp)
11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
18: fc ff df
1b: 48 c1 ea 03 shr $0x3,%rdx
1f: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
23: 0f 85 33 0f 00 00 jne 0xf5c
* 29: 4d 8b 6e 50 mov 0x50(%r14),%r13 <-- trapping instruction
2d: 4d 85 ed test %r13,%r13
30: 74 30 je 0x62
32: 49 8d bd 88 00 00 00 lea 0x88(%r13),%rdi
39: 48 rex.W
3a: b8 00 00 00 00 mov $0x0,%eax


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syzbot

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Jan 14, 2022, 6:47:14 PM1/14/22
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
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