syzbot


BUG: soft lockup in rtnl_newlink

Status: auto-obsoleted due to no activity on 2024/10/21 17:39
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+d59c6760c4736fc4d45e@syzkaller.appspotmail.com
First crash: 640d, last: 148d
Fix bisection: the issue occurs on the latest tested release (bisect log)
Crash: BUG: unable to handle kernel paging request in __alloc_skb (log)
Repro: C syz .config
  
Bug presence (2)
Date Name Commit Repro Result
2023/05/08 linux-5.15.y (ToT) 8a7f2a5c5aa1 C [report] INFO: rcu detected stall in rtnl_newlink
2023/05/07 upstream (ToT) ac9a78681b92 C Didn't crash
Similar bugs (11)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: rcu detected stall in rtnl_newlink (2) 3 179d 270d 0/3 auto-obsoleted due to no activity on 2024/09/20 22:26
upstream INFO: rcu detected stall in rtnl_newlink (4) fs batman C error 9 207d 283d 25/28 fixed on 2024/05/22 23:36
upstream INFO: rcu detected stall in rtnl_newlink (3) batman C error done 3 471d 521d 0/28 auto-obsoleted due to no activity on 2023/12/03 18:15
android-5-15 BUG: soft lockup in rtnl_newlink 7 124d 234d 0/2 auto-obsoleted due to no activity on 2024/11/04 06:23
android-6-1 BUG: soft lockup in rtnl_newlink 2 139d 149d 0/2 auto-obsoleted due to no activity on 2024/10/20 23:12
linux-4.14 BUG: soft lockup in rtnl_newlink 1 1047d 1047d 0/1 auto-closed as invalid on 2022/05/26 06:33
upstream INFO: rcu detected stall in rtnl_newlink batman C done inconclusive 201 796d 1598d 0/28 auto-obsoleted due to no activity on 2023/02/01 16:38
linux-6.1 INFO: rcu detected stall in rtnl_newlink 1 426d 426d 0/3 auto-obsoleted due to no activity on 2024/01/17 21:04
linux-5.15 INFO: rcu detected stall in rtnl_newlink origin:upstream syz 1 36d 36d 0/3 upstream: reported syz repro on 2024/11/02 18:01
linux-4.19 INFO: rcu detected stall in rtnl_newlink C error 7 726d 1599d 0/1 upstream: reported C repro on 2020/07/24 01:06
upstream INFO: rcu detected stall in rtnl_newlink (2) net 1 665d 665d 0/28 auto-obsoleted due to no activity on 2023/05/13 18:46
Last patch testing requests (3)
Created Duration User Patch Repo Result
2024/10/06 15:21 18m retest repro linux-5.15.y OK log
2024/10/06 15:21 22m retest repro linux-5.15.y OK log
2024/10/06 15:21 17m retest repro linux-5.15.y OK log
Fix bisection attempts (4)
Created Duration User Patch Repo Result
2023/10/18 20:56 4h14m fix candidate upstream OK (2) job log
2023/07/11 23:08 3h02m bisect fix linux-5.15.y OK (0) job log log
2023/06/07 00:49 32m bisect fix linux-5.15.y OK (0) job log log
2023/04/25 08:50 41m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:11175]
Modules linked in:
irq event stamp: 20298323
hardirqs last  enabled at (20298322): [<ffff8000081b5d1c>] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:388
hardirqs last disabled at (20298323): [<ffff80001197b990>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (4046): [<ffff80000fdf9770>] pneigh_ifdown_and_unlock net/core/neighbour.c:807 [inline]
softirqs last  enabled at (4046): [<ffff80000fdf9770>] __neigh_ifdown+0x198/0x370 net/core/neighbour.c:392
softirqs last disabled at (4070): [<ffff8000117cd6b4>] spin_lock_bh include/linux/spinlock.h:368 [inline]
softirqs last disabled at (4070): [<ffff8000117cd6b4>] batadv_tt_local_resize_to_mtu+0x60/0x150 net/batman-adv/translation-table.c:3949
CPU: 0 PID: 11175 Comm: syz-executor.3 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : should_resched arch/arm64/include/asm/preempt.h:78 [inline]
pc : __local_bh_enable_ip+0x238/0x470 kernel/softirq.c:390
lr : __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:388
sp : ffff8000201a6330
x29: ffff8000201a6340 x28: 0000000000000100 x27: ffff0000e64c0818
x26: ffff0000cb885a90 x25: ffff0000e67fc708 x24: 0000000000000001
x23: 1fffe00019671369 x22: dfff800000000000 x21: ffff8000117cda08
x20: 0000000000000202 x19: ffff0000cb389b48 x18: 0000000000000202
x17: 0000000000000002 x16: ffff8000082eb194 x15: 00000000ffffffff
x14: 1ffff0000292206a x13: dfff800000000000 x12: 0000000000040000
x11: 000000000003ffff x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008046860
x2 : 0000000000000002 x1 : ffff800011acad00 x0 : ffff80019ff93000
Call trace:
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline]
 __local_bh_enable_ip+0x238/0x470 kernel/softirq.c:388
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
 _raw_spin_unlock_bh+0xf8/0x180 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:408 [inline]
 batadv_tt_local_purge+0x264/0x2e8 net/batman-adv/translation-table.c:1356
 batadv_tt_local_resize_to_mtu+0x9c/0x150 net/batman-adv/translation-table.c:3956
 batadv_hard_if_event+0x41c/0xe10
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
 call_netdevice_notifiers_mtu+0x16c/0x208 net/core/dev.c:2067
 dev_set_mtu_ext+0x3c4/0x540 net/core/dev.c:8955
 do_setlink+0x7d8/0x3164 net/core/rtnetlink.c:2704
 __rtnl_newlink net/core/rtnetlink.c:3429 [inline]
 rtnl_newlink+0x12fc/0x1af4 net/core/rtnetlink.c:3549
 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5629
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2505
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5647
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1924
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x584/0x870 net/socket.c:2431
 ___sys_sendmsg+0x214/0x294 net/socket.c:2485
 __sys_sendmsg net/socket.c:2514 [inline]
 __do_sys_sendmsg net/socket.c:2523 [inline]
 __se_sys_sendmsg net/socket.c:2521 [inline]
 __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2521
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Crashes (65):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/03/28 07:20 linux-5.15.y 9465fef4ae35 120789fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2024/03/19 03:37 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2024/01/29 13:02 linux-5.15.y 6139f2a02fe0 991a98f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2024/01/26 01:26 linux-5.15.y 6139f2a02fe0 cc4a4020 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2024/01/03 21:01 linux-5.15.y d93fa2c78854 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2023/12/12 19:32 linux-5.15.y 8a1d809b0545 ebcad15c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2023/11/09 05:17 linux-5.15.y 80529b4968a8 4862372a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2023/10/07 09:49 linux-5.15.y 1edcec18cfb7 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2023/03/21 16:17 linux-5.15.y 8020ae3c051d 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2023/03/09 19:16 linux-5.15.y d9b4a0c83a2d f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: soft lockup in rtnl_newlink
2024/07/13 17:39 linux-5.15.y f45bea23c39c eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/07/07 06:02 linux-5.15.y f45bea23c39c 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/06/21 17:51 linux-5.15.y 4878aadf2d15 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/04/14 01:52 linux-5.15.y fa3df276cd36 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/04/08 11:16 linux-5.15.y 9465fef4ae35 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/03/31 06:01 linux-5.15.y 9465fef4ae35 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/02/27 22:37 linux-5.15.y 458ce51d0356 d367cbe5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/02/23 11:30 linux-5.15.y 458ce51d0356 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/02/14 08:42 linux-5.15.y 6139f2a02fe0 d902085f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/02/13 15:52 linux-5.15.y 6139f2a02fe0 e66542d7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/02/01 16:58 linux-5.15.y 6139f2a02fe0 81024119 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/02/01 14:10 linux-5.15.y 6139f2a02fe0 81024119 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/01/10 03:07 linux-5.15.y 26c690eff0a5 b438bd66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/01/05 23:40 linux-5.15.y 26c690eff0a5 d0304e9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/22 21:16 linux-5.15.y 1d146b1875fc fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/22 19:23 linux-5.15.y 1d146b1875fc fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/21 13:24 linux-5.15.y 1d146b1875fc 4f9530a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/20 18:41 linux-5.15.y 1d146b1875fc de21eb89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/19 14:31 linux-5.15.y d0fc081c6241 3ad490ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/18 22:41 linux-5.15.y d0fc081c6241 924661f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/13 19:52 linux-5.15.y d0fc081c6241 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/08 05:01 linux-5.15.y 9b91d36ba301 28b24332 .config console log report info ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/07 12:24 linux-5.15.y 9b91d36ba301 0a02ce36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/12/05 23:37 linux-5.15.y 9b91d36ba301 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/11/30 05:43 linux-5.15.y a78d278e01b1 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/11/30 01:13 linux-5.15.y a78d278e01b1 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/11/23 21:37 linux-5.15.y 2a910f4af54d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/11/10 15:00 linux-5.15.y 80529b4968a8 45e9b83e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/11/08 07:28 linux-5.15.y 12952a23a5da 83211397 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/11/03 22:34 linux-5.15.y 12952a23a5da 500bfdc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/11/03 01:58 linux-5.15.y 12952a23a5da c4ac074c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/30 11:33 linux-5.15.y 12952a23a5da 3c418d72 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/26 16:10 linux-5.15.y 12952a23a5da 23afc60f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/23 13:16 linux-5.15.y 00c03985402e 989a3687 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/13 21:53 linux-5.15.y 02e21884dcf2 f757a323 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/10 22:43 linux-5.15.y 02e21884dcf2 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/06 21:58 linux-5.15.y 1edcec18cfb7 ea12a918 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/06 18:34 linux-5.15.y 1edcec18cfb7 ea12a918 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/10/05 20:56 linux-5.15.y b911329317b4 db17ad9f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/09/29 16:59 linux-5.15.y b911329317b4 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/09/27 21:34 linux-5.15.y b911329317b4 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/09/08 19:03 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/09/02 09:43 linux-5.15.y 8f790700c974 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/08/31 22:55 linux-5.15.y 9e43368a3393 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/08/30 18:36 linux-5.15.y 9e43368a3393 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/26 08:48 linux-5.15.y 115472395b0a fbf0499a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/19 11:19 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/11 05:20 linux-5.15.y abddfcf701a5 5205ef30 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2024/05/23 05:36 linux-5.15.y 83655231580b 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 INFO: rcu detected stall in rtnl_newlink
2023/08/10 16:54 linux-5.15.y c275eaaaa342 da3c3ef8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/12 20:13 linux-5.15.y bbf9f29bac04 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/12 17:49 linux-5.15.y bbf9f29bac04 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/11 22:01 linux-5.15.y d214f240b0f6 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/10 13:41 linux-5.15.y abddfcf701a5 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
2023/03/10 09:03 linux-5.15.y d9b4a0c83a2d 5205ef30 .config console log report info ci2-linux-5-15-kasan INFO: rcu detected stall in rtnl_newlink
* Struck through repros no longer work on HEAD.