syzbot


INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit

Status: upstream: reported syz repro on 2023/03/26 10:35
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+1fc0d49addd928872d8d@syzkaller.appspotmail.com
First crash: 456d, last: 1h20m
Fix bisection: failed (error log, bisect log)
  
Bug presence (2)
Date Name Commit Repro Result
2023/05/21 linux-6.1.y (ToT) fa74641fb6b9 C [report] INFO: rcu detected stall in corrupted
2023/05/21 upstream (ToT) 0dd2a6fb1e34 C Didn't crash
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit net syz 7 480d 497d 22/27 fixed on 2023/06/08 14:41
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/09/05 16:40 1h59m fix candidate upstream job log (0)
2023/04/25 10:36 24m bisect fix linux-6.1.y error job log (0)

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4364
	(detected by 1, t=10502 jiffies, g=5005, q=1186 ncpus=2)
task:syz-executor.3  state:R  running task     stack:0     pid:4364  ppid:1      flags:0x0000000d
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 sched_show_task+0x438/0x570 kernel/sched/core.c:8942
 rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:261 [inline]
 print_other_cpu_stall+0x1ab8/0x22e0 kernel/rcu/tree_stall.h:606
 check_cpu_stall kernel/rcu/tree_stall.h:778 [inline]
 rcu_pending kernel/rcu/tree.c:3890 [inline]
 rcu_sched_clock_irq+0x195c/0x1c54 kernel/rcu/tree.c:2393
 update_process_times+0x15c/0x1f4 kernel/time/timer.c:1869
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x340/0x4f8 kernel/time/tick-sched.c:1501
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x484/0xdc0 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x2c0/0xb64 kernel/time/hrtimer.c:1812
 timer_handler drivers/clocksource/arm_arch_timer.c:655 [inline]
 arch_timer_handler_virt+0x74/0x88 drivers/clocksource/arm_arch_timer.c:666
 handle_percpu_devid_irq+0x174/0x354 kernel/irq/chip.c:930
 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
 handle_irq_desc kernel/irq/irqdesc.c:651 [inline]
 generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:707
 __gic_handle_irq drivers/irqchip/irq-gic-v3.c:737 [inline]
 __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:788 [inline]
 gic_handle_irq+0x70/0x1e4 drivers/irqchip/irq-gic-v3.c:832
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:893
 do_interrupt_handler+0xd4/0x138 arch/arm64/kernel/entry-common.c:274
 __el1_irq arch/arm64/kernel/entry-common.c:471 [inline]
 el1_interrupt+0x34/0x68 arch/arm64/kernel/entry-common.c:486
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 lock_release+0x528/0xa50 kernel/locking/lockdep.c:5685
 rcu_lock_release+0x2c/0x38 include/linux/rcupdate.h:355
 xa_get_mark+0x4d4/0x550
 devlinks_xa_find_get+0x124/0x2dc net/devlink/leftover.c:308
 devlinks_xa_find_get_first net/devlink/leftover.c:328 [inline]
 devlink_nl_cmd_port_get_dumpit+0x108/0x504 net/devlink/leftover.c:1556
 netlink_dump+0x46c/0xa78 net/netlink/af_netlink.c:2231
 __netlink_dump_start+0x484/0x698 net/netlink/af_netlink.c:2335
 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:714 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:830 [inline]
 genl_rcv_msg+0x7b4/0xc2c net/netlink/genetlink.c:850
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508
 genl_rcv+0x38/0x50 net/netlink/genetlink.c:861
 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline]
 netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1352
 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1874
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x3b8/0x508 net/socket.c:2148
 __do_sys_sendto net/socket.c:2160 [inline]
 __se_sys_sendto net/socket.c:2156 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2156
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Crashes (109):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/20 21:34 linux-6.1.y eb44d83053d6 dac2aa43 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/08 04:22 linux-6.1.y 88690811da69 82c05ab8 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/02 15:28 linux-6.1.y 88690811da69 3113787f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/02 03:14 linux-6.1.y 88690811da69 3113787f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/01 20:21 linux-6.1.y 88690811da69 3113787f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/18 17:09 linux-6.1.y 4078fa637fcd c0f1611a .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/17 23:26 linux-6.1.y 4078fa637fcd a12e99e7 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/04/01 19:38 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/03/23 10:08 linux-6.1.y d7543167affd 0ea90952 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/03/07 10:57 linux-6.1.y 61adba85cc40 f39a7eed .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2023/05/08 07:56 linux-6.1.y ca48fc16c493 90c93c40 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2023/03/26 10:35 linux-6.1.y e3a87a10f259 fbf0499a .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/05 09:10 linux-6.1.y 88690811da69 e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/24 20:43 linux-6.1.y eb44d83053d6 215eef4a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/20 16:28 linux-6.1.y eb44d83053d6 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/19 05:39 linux-6.1.y eb44d83053d6 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/17 21:00 linux-6.1.y eb44d83053d6 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/17 17:55 linux-6.1.y eb44d83053d6 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/17 08:13 linux-6.1.y eb44d83053d6 88722c0f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/16 21:21 linux-6.1.y eb44d83053d6 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/16 18:01 linux-6.1.y eb44d83053d6 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/15 13:08 linux-6.1.y ae9f2a70d69e f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/13 13:57 linux-6.1.y ae9f2a70d69e a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/13 01:21 linux-6.1.y ae9f2a70d69e f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/11 23:25 linux-6.1.y 88690811da69 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/11 11:45 linux-6.1.y 88690811da69 b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/10 15:00 linux-6.1.y 88690811da69 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/10 04:55 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/08 14:20 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/07 15:36 linux-6.1.y 88690811da69 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/05 12:35 linux-6.1.y 88690811da69 e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/05 07:04 linux-6.1.y 88690811da69 e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/05 05:44 linux-6.1.y 88690811da69 e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/04 05:39 linux-6.1.y 88690811da69 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/06/03 17:47 linux-6.1.y 88690811da69 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/31 10:05 linux-6.1.y 88690811da69 0c378259 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/29 02:15 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/28 20:00 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/28 16:28 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/28 03:30 linux-6.1.y 88690811da69 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/28 00:31 linux-6.1.y 88690811da69 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/27 19:29 linux-6.1.y 88690811da69 761766e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/24 11:01 linux-6.1.y 4078fa637fcd 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/23 23:43 linux-6.1.y 4078fa637fcd 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/23 22:07 linux-6.1.y 4078fa637fcd 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/22 12:11 linux-6.1.y 4078fa637fcd 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/21 11:13 linux-6.1.y 4078fa637fcd 4c0d3ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/19 10:57 linux-6.1.y 4078fa637fcd c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/18 22:57 linux-6.1.y 4078fa637fcd c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/18 02:37 linux-6.1.y 4078fa637fcd c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/18 00:45 linux-6.1.y 4078fa637fcd c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/17 04:14 linux-6.1.y 909ba1f1b414 c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/15 10:26 linux-6.1.y 909ba1f1b414 94b087b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/14 14:53 linux-6.1.y 909ba1f1b414 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/14 04:31 linux-6.1.y 909ba1f1b414 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/10 02:37 linux-6.1.y 909ba1f1b414 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/08 01:12 linux-6.1.y 909ba1f1b414 4cf3f9b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/07 15:01 linux-6.1.y 909ba1f1b414 cb2dcc0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/06 20:17 linux-6.1.y 909ba1f1b414 d884b519 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/03 03:58 linux-6.1.y 909ba1f1b414 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/02 16:48 linux-6.1.y 909ba1f1b414 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
2024/05/02 07:22 linux-6.1.y dcbc050cb0d3 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 INFO: rcu detected stall in devlink_nl_cmd_port_get_dumpit
* Struck through repros no longer work on HEAD.