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WARNING in __bch2_fsck_err (2)

Status: upstream: reported C repro on 2024/10/08 03:05
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+a3df02951b3139aec8eb@syzkaller.appspotmail.com
Fix commit: 5612daafb764 bcachefs: Fix fsck warnings from bkey validation
Patched on: [ci-qemu-gce-upstream-auto ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 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-qemu-native-arm64-kvm]
First crash: 18d, last: 18d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] WARNING in __bch2_fsck_err (2) 1 (2) 2024/10/08 03:32
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __bch2_fsck_err bcachefs C 200 20d 67d 28/28 fixed on 2024/10/03 15:25

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6422 at fs/bcachefs/error.c:242 __bch2_fsck_err+0x1bc8/0x278c fs/bcachefs/error.c:242
Modules linked in:
CPU: 1 UID: 0 PID: 6422 Comm: read_btree_node Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __bch2_fsck_err+0x1bc8/0x278c fs/bcachefs/error.c:242
lr : __bch2_fsck_err+0x1bc8/0x278c fs/bcachefs/error.c:242
sp : ffff8000a4326740
x29: ffff8000a4326900 x28: ffff80008b92e200 x27: dfff800000000000
x26: 0000000000000001 x25: 0000000000000055 x24: ffff8000a43267e0
x23: 0000000000000000 x22: ffff8000a4326800 x21: 0000000000000055
x20: ffff0000dcb80000 x19: 0000000000000000 x18: ffff8000a4326200
x17: 000000000000cd00 x16: ffff800080569b84 x15: 0000000000000001
x14: 1ffff00014864cc8 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700014864cc9 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000e3798000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff8000930c3640 x4 : 0000000000000008 x3 : ffff80008b41d320
x2 : 0000000000000001 x1 : 0000000000000008 x0 : 0000000000000001
Call trace:
 __bch2_fsck_err+0x1bc8/0x278c fs/bcachefs/error.c:242
 __bch2_bkey_fsck_err+0x7b0/0xea8 fs/bcachefs/error.c:436
 __bch2_bkey_validate+0x554/0x768
 bset_key_validate fs/bcachefs/btree_io.c:843 [inline]
 validate_bset_keys+0x724/0x1204 fs/bcachefs/btree_io.c:914
 bch2_btree_node_read_done+0x1a64/0x4ab4 fs/bcachefs/btree_io.c:1134
 btree_node_read_work+0x50c/0xe04 fs/bcachefs/btree_io.c:1323
 bch2_btree_node_read+0x1f50/0x280c fs/bcachefs/btree_io.c:1708
 bch2_btree_node_fill+0x8cc/0xfbc fs/bcachefs/btree_cache.c:886
 bch2_btree_node_get_noiter+0x7fc/0xbec fs/bcachefs/btree_cache.c:1155
 found_btree_node_is_readable fs/bcachefs/btree_node_scan.c:85 [inline]
 try_read_btree_node fs/bcachefs/btree_node_scan.c:190 [inline]
 read_btree_nodes_worker+0xdcc/0x1980 fs/bcachefs/btree_node_scan.c:239
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
irq event stamp: 310
hardirqs last  enabled at (309): [<ffff800080a88010>] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234
hardirqs last disabled at (310): [<ffff80008b3363f4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (0): [<ffff8000801d498c>] copy_process+0x11f8/0x3264 kernel/fork.c:2319
softirqs last disabled at (0): [<0000000000000000>] 0x0
---[ end trace 0000000000000000 ]---
invalid bkey u64s 7 type xattr 1073741824:2097412339779176161:U32_MAX len 9568256 ver 0: user.xattr2:xattr2
  size != 0: delete?, fixing

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/04 03:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 5f5673607153 d7906eff .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in __bch2_fsck_err
2024/10/04 03:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 5f5673607153 d7906eff .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in __bch2_fsck_err
2024/10/04 02:53 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 5f5673607153 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in __bch2_fsck_err
* Struck through repros no longer work on HEAD.