syzbot


BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!

Status: upstream: reported C repro on 2023/03/28 22:33
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+bab7a1cdf22616e99208@syzkaller.appspotmail.com
First crash: 784d, last: 1d05h
Fix bisection: failed (error log, bisect log)
  
Bug presence (1)
Date Name Commit Repro Result
2023/07/20 upstream (ToT) 57f1f9dd3abe C [report] BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (6) btrfs C 2 271d 272d 0/28 closed as invalid on 2024/08/30 15:02
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (3) btrfs C 7 581d 581d 0/28 closed as invalid on 2023/10/17 19:49
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (5) btrfs C 931 280d 310d 27/28 fixed on 2024/08/14 19:57
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (4) btrfs C 8 575d 576d 0/28 closed as invalid on 2023/10/23 13:15
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (7) btrfs C 1273 11h44m 248d 0/28 upstream: reported C repro on 2024/09/14 09:10
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! C done error 25236 1827d 2267d 15/28 fixed on 2020/12/09 20:00
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (2) kernel C 2688 587d 1543d 23/28 fixed on 2023/10/12 12:47
linux-5.15 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! origin:upstream missing-backport C error 2 9d13h 645d 0/3 upstream: reported C repro on 2023/08/14 00:36

Sample crash report:
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 PID: 7481 Comm: syz-executor345 Not tainted 6.1.61-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3771 [inline]
 validate_chain kernel/locking/lockdep.c:3792 [inline]
 __lock_acquire+0x1b8c/0x764c kernel/locking/lockdep.c:5048
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5661
 fs_reclaim_acquire+0xbc/0x12c mm/page_alloc.c:4687
 might_alloc include/linux/sched/mm.h:271 [inline]
 prepare_alloc_pages+0x138/0x560 mm/page_alloc.c:5316
 __alloc_pages+0x150/0x730 mm/page_alloc.c:5534
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0xbc/0x21c mm/slab_common.c:1096
 kmalloc_large+0x2c/0xc8 mm/slab_common.c:1113
 kmalloc include/linux/slab.h:546 [inline]
 kzalloc include/linux/slab.h:689 [inline]
 lb_init+0x5c/0x3ac drivers/net/team/team_mode_loadbalance.c:614
 __team_change_mode+0x284/0x4a0 drivers/net/team/team.c:578
 team_change_mode drivers/net/team/team.c:612 [inline]
 team_mode_option_set+0x324/0x390 drivers/net/team/team.c:1388
 team_option_set drivers/net/team/team.c:374 [inline]
 team_nl_cmd_options_set+0x7e0/0xdec drivers/net/team/team.c:2682
 genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
 genl_rcv_msg+0x948/0xc2c 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:716 [inline]
 __sock_sendmsg net/socket.c:728 [inline]
 ____sys_sendmsg+0x558/0x844 net/socket.c:2499
 ___sys_sendmsg net/socket.c:2553 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2582
 __do_sys_sendmsg net/socket.c:2591 [inline]
 __se_sys_sendmsg net/socket.c:2589 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2589
 __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
team2470: Mode changed to "loadbalance"

Crashes (110):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/07 09:00 linux-6.1.y 4a61839152cc 83211397 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2023/07/17 08:28 linux-6.1.y 61fd484b2cf6 35d9ecc5 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/05/19 18:44 linux-6.1.y 325285d9fc86 b84f0537 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/05/18 15:40 linux-6.1.y 325285d9fc86 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/05/10 02:38 linux-6.1.y 02b72ccb5f9d 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/05/03 00:50 linux-6.1.y b6736e03756f b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/25 23:46 linux-6.1.y 535ec20c5027 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/18 01:31 linux-6.1.y 420102835862 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/16 20:57 linux-6.1.y 420102835862 a95239b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/13 18:48 linux-6.1.y 420102835862 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/10 05:43 linux-6.1.y 3dfebb87d7eb 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/10 04:23 linux-6.1.y 3dfebb87d7eb 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/09 17:28 linux-6.1.y 3dfebb87d7eb 47d015b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/04/01 11:14 linux-6.1.y 8e60a714ba3b 36d76a97 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/03/29 12:36 linux-6.1.y 8e60a714ba3b cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/03/25 08:13 linux-6.1.y 344a09659766 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/03/21 09:31 linux-6.1.y 344a09659766 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/03/20 02:40 linux-6.1.y 344a09659766 e20d7b13 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/03/20 00:43 linux-6.1.y 344a09659766 e20d7b13 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/03/05 01:24 linux-6.1.y 3a8358583626 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/02/24 06:17 linux-6.1.y 3a8358583626 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/02/21 01:14 linux-6.1.y 0cbb5f65e52f 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/02/11 23:44 linux-6.1.y 0cbb5f65e52f f2baddf5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/02/08 15:36 linux-6.1.y 0cbb5f65e52f ef44b750 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/02/03 09:01 linux-6.1.y 0cbb5f65e52f 568559e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/28 18:58 linux-6.1.y 75cefdf153f5 f5427d7c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/28 06:35 linux-6.1.y 75cefdf153f5 18070896 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/24 05:14 linux-6.1.y 75cefdf153f5 521b0ce3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/22 01:26 linux-6.1.y f4f677285b38 da72ac06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/17 09:38 linux-6.1.y c63962be84ef f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/13 20:10 linux-6.1.y c63962be84ef 249ceea9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/09 21:05 linux-6.1.y c63962be84ef 9220929f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2025/01/03 22:54 linux-6.1.y 7dc732d24ff7 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/26 03:40 linux-6.1.y 29f02ec58a94 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/12 20:41 linux-6.1.y e4d90d63d385 530e80f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/10 06:39 linux-6.1.y e4d90d63d385 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/07 00:22 linux-6.1.y e4d90d63d385 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/06 12:04 linux-6.1.y e4d90d63d385 946d28f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/03 06:33 linux-6.1.y e4d90d63d385 578925bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/03 00:19 linux-6.1.y e4d90d63d385 b499ea68 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/02 19:12 linux-6.1.y e4d90d63d385 b499ea68 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/12/02 17:29 linux-6.1.y e4d90d63d385 b499ea68 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/28 01:23 linux-6.1.y e4d90d63d385 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/27 23:53 linux-6.1.y e4d90d63d385 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/27 10:12 linux-6.1.y e4d90d63d385 52b38cc1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/26 02:24 linux-6.1.y e4d90d63d385 11dbc254 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/24 04:20 linux-6.1.y e4d90d63d385 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/23 08:10 linux-6.1.y e4d90d63d385 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/23 03:37 linux-6.1.y e4d90d63d385 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2024/11/21 17:12 linux-6.1.y b67dc5c9ade9 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
2023/03/28 22:33 linux-6.1.y e3a87a10f259 fc067f05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
* Struck through repros no longer work on HEAD.