syzbot

 sign-in | mailing list | source | docs
🐞 Open [1670]
≡ Subsystems
🐞 Fixed [6088]
🐞 Invalid [15133]
⬇ Missing Backports [160]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

kernel BUG in bch2_btree_pos_to_text (2)

Status: upstream: reported C repro on 2024/11/22 18:44
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+1f202d4da221ec6ebf8e@syzkaller.appspotmail.com
Fix commit: abf23afa36eb bcachefs: Fix btree node scan when unknown btree IDs are present
Patched on: [ci-qemu-gce-upstream-auto ci-qemu-native-arm64-kvm ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-snapshot-upstream-root ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-badwrites-root ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce-386-root ci-upstream-kmsan-gce-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-arm32]
First crash: 111d, last: 50d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] kernel BUG in bch2_btree_pos_to_text (2) 0 (2) 2024/11/25 03:59
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in bch2_btree_pos_to_text bcachefs C 8 121d 170d 28/28 fixed on 2024/11/12 23:31

Sample crash report:
invalid bkey u64s 5 type set 18446462598867058688:34:0 len 3072 ver 0
  size != 0: delete?, fixing
------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_cache.h:131!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5321 Comm: read_btree_node Not tainted 6.12.0-syzkaller-00971-g158f238aa69d #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:bch2_btree_id_root fs/bcachefs/btree_cache.h:131 [inline]
RIP: 0010:bch2_btree_pos_to_text+0x1ee/0x1f0 fs/bcachefs/btree_cache.c:1403
Code: 00 00 fc ff df e9 70 ff ff ff 89 d9 80 e1 07 38 c1 0f 8c 7a ff ff ff 48 89 df e8 fd 89 e9 fd e9 6d ff ff ff e8 c3 a1 7f fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc9000d14f448 EFLAGS: 00010293
RAX: ffffffff8415501d RBX: 000000000000001e RCX: ffff888000c04880
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff84154f0a R09: 0000000000000000
R10: ffffc9000d14f5e0 R11: fffff52001a29ec1 R12: ffff888040420800
R13: ffff888044700000 R14: ffff888044700000 R15: ffffc9000d14f5e0
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562b097d2fd0 CR3: 0000000011e62000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btree_node_read_work+0x486/0x1260 fs/bcachefs/btree_io.c:1308
 bch2_btree_node_read+0x2433/0x2a10
 bch2_btree_node_fill+0xc75/0x12f0 fs/bcachefs/btree_cache.c:991
 bch2_btree_node_get_noiter+0x9d5/0xf70 fs/bcachefs/btree_cache.c:1260
 found_btree_node_is_readable fs/bcachefs/btree_node_scan.c:85 [inline]
 try_read_btree_node fs/bcachefs/btree_node_scan.c:193 [inline]
 read_btree_nodes_worker+0x13c5/0x2220 fs/bcachefs/btree_node_scan.c:242
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_btree_id_root fs/bcachefs/btree_cache.h:131 [inline]
RIP: 0010:bch2_btree_pos_to_text+0x1ee/0x1f0 fs/bcachefs/btree_cache.c:1403
Code: 00 00 fc ff df e9 70 ff ff ff 89 d9 80 e1 07 38 c1 0f 8c 7a ff ff ff 48 89 df e8 fd 89 e9 fd e9 6d ff ff ff e8 c3 a1 7f fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc9000d14f448 EFLAGS: 00010293
RAX: ffffffff8415501d RBX: 000000000000001e RCX: ffff888000c04880
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff84154f0a R09: 0000000000000000
R10: ffffc9000d14f5e0 R11: fffff52001a29ec1 R12: ffff888040420800
R13: ffff888044700000 R14: ffff888044700000 R15: ffffc9000d14f5e0
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b6646f3018 CR3: 0000000011e62000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (51):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/20 04:25 upstream 158f238aa69d 7d02db5a .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/06 04:52 upstream 5076001689e4 29f61fce .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in bch2_btree_pos_to_text
2025/01/19 09:55 upstream fda5e3f28400 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/19 04:33 upstream fda5e3f28400 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/18 22:46 upstream 595523945be0 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/18 18:42 upstream 595523945be0 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/15 10:18 upstream c3812b15000c 7315a7cf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/14 14:39 upstream c45323b7560e 0dce2409 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/13 16:55 upstream 5bc55a333a2f 249ceea9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/10 02:24 upstream 643e2e259c2b 67d7ec0a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/07 17:02 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/06 04:51 upstream 9244696b34f2 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/05 10:46 upstream ab75170520d4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/05 07:04 upstream ab75170520d4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/04 12:33 upstream 63676eefb7a0 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/03 17:14 upstream 0bc21e701a6f 96d578a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/03 01:28 upstream 0bc21e701a6f d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/30 04:32 upstream 4099a71718b0 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/29 02:05 upstream 059dd502b263 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/26 19:32 upstream 9b2ffa6148b1 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/26 07:45 upstream 9b2ffa6148b1 444551c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/24 06:30 upstream f07044dd0df0 444551c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/23 17:13 upstream 4bbf9020becb 444551c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/22 06:53 upstream 48f506ad0b68 d7f584ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/21 04:37 upstream e9b8ffafd20a d7f584ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/20 13:12 upstream 8faabc041a00 49cfeac8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/19 23:37 upstream baaa2567a712 c87fa8a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/19 07:23 upstream eabcdba3ad40 1432fc84 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/15 16:35 upstream 2d8308bf5b67 7cbfbb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/15 10:34 upstream 2d8308bf5b67 7cbfbb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/15 08:38 upstream 2d8308bf5b67 7cbfbb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/14 08:44 upstream 4800575d8c0b 7cbfbb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/13 22:29 upstream f932fb9b4074 7d3b55db .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/13 07:40 upstream 150b567e0d57 3547e30f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/10 19:05 upstream 7cb1b4663150 cfc402b4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/09 23:33 upstream 7cb1b4663150 deb72877 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/09 08:54 upstream 62b5a46999c7 9ac0fdc6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/08 22:36 upstream 62b5a46999c7 9ac0fdc6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/08 14:50 upstream 7503345ac5f5 9ac0fdc6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/04 17:00 upstream feffde684ac2 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/04 10:14 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/12/01 07:52 upstream d8b78066f4c9 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/30 15:46 upstream 2ba9f676d0a2 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/26 15:59 upstream 7eef7e306d3c e9a9a9f2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/25 18:33 upstream 9f16d5e6f220 36dfdd05 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/25 08:07 upstream 9f16d5e6f220 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/24 23:40 upstream 9f16d5e6f220 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/22 17:24 upstream 28eb75e178d3 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/20 09:03 upstream bf9aa14fc523 7d02db5a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2024/11/20 03:35 upstream 158f238aa69d 7d02db5a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_btree_pos_to_text
2025/01/07 19:51 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 573067a5a685 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in bch2_btree_pos_to_text
* Struck through repros no longer work on HEAD.