syzbot


UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid (2)

Status: upstream: reported C repro on 2024/06/10 05:39
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+e5292b50f1957164a4b6@syzkaller.appspotmail.com
First crash: 12d, last: 1h49m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid (2) 0 (1) 2024/06/10 05:39
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid bcachefs C 45 15d 41d 26/27 fixed on 2024/06/05 13:52

Sample crash report:
bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=ro,metadata_checksum=none,data_checksum=xxhash,compression=zstd,nojournal_transaction_names,read_only
bcachefs (loop0): recovering from clean shutdown, journal seq 10
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in fs/bcachefs/bkey.c:664:22
shift exponent 64 is too large for 64-bit type 'unsigned long long'
CPU: 0 PID: 6246 Comm: syz-executor702 Tainted: G        W          6.10.0-rc2-syzkaller-g8867bbd4a056 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 dump_stack+0x1c/0x28 lib/dump_stack.c:123
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c lib/ubsan.c:468
 bch2_bkey_format_invalid+0x6a0/0x6e0 fs/bcachefs/bkey.c:664
 validate_bset+0x10ec/0x1d24 fs/bcachefs/btree_io.c:822
 bch2_btree_node_read_done+0x16f0/0x4ac8 fs/bcachefs/btree_io.c:1140
 btree_node_read_work+0x50c/0xe04 fs/bcachefs/btree_io.c:1345
 bch2_btree_node_read+0x1f4c/0x2818 fs/bcachefs/btree_io.c:1730
 __bch2_btree_root_read fs/bcachefs/btree_io.c:1769 [inline]
 bch2_btree_root_read+0x2a8/0x534 fs/bcachefs/btree_io.c:1793
 read_btree_roots+0x21c/0x730 fs/bcachefs/recovery.c:475
 bch2_fs_recovery+0x31c4/0x5488 fs/bcachefs/recovery.c:803
 bch2_fs_start+0x30c/0x53c fs/bcachefs/super.c:1031
 bch2_fs_open+0x8b4/0xb64 fs/bcachefs/super.c:2123
 bch2_mount+0x4fc/0xe18 fs/bcachefs/fs.c:1917
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662
 vfs_get_tree+0x90/0x288 fs/super.c:1780
 do_new_mount+0x278/0x900 fs/namespace.c:3352
 path_mount+0x590/0xe04 fs/namespace.c:3679
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount fs/namespace.c:3875 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
---[ end trace ]---
bcachefs (loop0): inconsistency detected - emergency read only at journal seq 10
bcachefs (loop0): flagging btree alloc lost data
error reading btree root alloc l=0: btree_node_read_error, shutting down
bcachefs (loop0): bch2_fs_recovery(): error fsck_errors_not_fixed
bcachefs (loop0): bch2_fs_start(): error starting filesystem fsck_errors_not_fixed
bcachefs (loop0): shutting down
bcachefs (loop0): shutdown complete

Crashes (32):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/06 09:38 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 121701b6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/17 01:33 upstream 2ccbdf43d5e7 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/14 07:53 upstream 2ccbdf43d5e7 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/12 20:26 upstream cea2a26553ac f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/10 18:16 upstream 83a7eefedc9b 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/10 18:03 upstream 83a7eefedc9b 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:34 upstream 71d7b52cc33b 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:33 upstream 71d7b52cc33b 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:33 upstream 71d7b52cc33b 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:28 upstream 2df0193e62cf 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:28 upstream 2df0193e62cf 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/18 09:13 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/17 20:39 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/17 15:48 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/16 02:58 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:35 upstream 71d7b52cc33b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/18 00:39 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/17 16:49 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/17 13:13 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/16 09:05 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/15 07:42 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/14 15:45 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/11 23:43 upstream 83a7eefedc9b c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/17 08:29 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ac2193b4b460 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/14 14:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci ac2193b4b460 a9616ff5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/10 08:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/09 17:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/08 11:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/07 10:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 09:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:29 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
2024/06/06 05:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid
* Struck through repros no longer work on HEAD.