general protection fault in bch2_prt

ID	Workflow	Correct	Bug	Created	Started	Finished	Revision	Error
67c5318d-5393-468b-b975-6670168fdd67	assessment-security	💥	general protection fault in bch2_prt_vprintf	2026/07/09 01:49	2026/07/09 01:50	2026/07/09 02:14	93f579545ae410f5bccfa141d2e7bf03178f036c	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/5241db11ca1a25793b... truncated to first 200 bytes; open job for full error
dda40300-9ee9-4b11-a386-2265ffc622e9	assessment-security	💥	general protection fault in bch2_prt_vprintf	2026/06/22 03:45	2026/06/22 03:45	2026/06/22 04:11	43bfcdb07c3552e4664e1029672054ac0924d543	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/5241db11ca1a25793b... truncated to first 200 bytes; open job for full error
69c40abc-d02b-4c42-9d9b-b4c7ac8ee5ff	assessment-security	💥	general protection fault in bch2_prt_vprintf	2026/06/14 02:56	2026/06/14 02:56	2026/06/14 03:16	4f06757f683a802254a4c8edbfe67ff801904c5e	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/5241db11ca1a25793b... truncated to first 200 bytes; open job for full error
6c5ba84c-3f71-4c7b-90cd-1ed637725796	assessment-security	💥	general protection fault in bch2_prt_vprintf	2026/06/09 18:49	2026/06/09 18:49	2026/06/09 19:10	c36c07f6c1f2230a36374cbd22235f635e8f9284	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/5241db11ca1a25793b... truncated to first 200 bytes; open job for full error
d8ce0f95-a430-4850-8ee5-500a99d72e3b	assessment-security	💥	general protection fault in bch2_prt_vprintf	2026/06/02 17:28	2026/06/02 17:28	2026/06/02 17:50	62fe15281f5011cd203d8845b8767b10e7443aa5	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/5241db11ca1a25793b... truncated to first 200 bytes; open job for full error
42008a24-25cb-493f-9bae-c6c96892ec38	assessment-security	💥	general protection fault in bch2_prt_vprintf	2026/05/26 05:24	2026/05/26 05:24	2026/05/26 05:52	c69befb30ac10e158cc9d1557b508ee3f0eca1de	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/5241db11ca1a25793b... truncated to first 200 bytes; open job for full error

Title	Replies (including bot)	Last reply
[syzbot] [bcachefs?] general protection fault in bch2_prt_vprintf	0 (2)	2025/07/22 16:18

Title

Replies (including bot)

Last reply

[syzbot] [bcachefs?] general protection fault in bch2_prt_vprintf

0 (2)

2025/07/22 16:18

Created	Duration	User	Repo	Result
2025/06/27 13:42	14m	retest repro	upstream	report log
2025/04/18 02:29	14m	retest repro	upstream	report log
2025/02/25 20:54	24m	retest repro	upstream	OK log
2025/02/25 19:31	25m	retest repro	upstream	OK log
2025/01/05 10:01	57m	retest repro	upstream	report log
2024/12/17 19:12	13m	retest repro	upstream	report log
2024/12/17 19:12	13m	retest repro	upstream	report log

Created

Duration

User

Patch

Repo

Result

2025/06/27 13:42

14m

retest repro

upstream

report log

2025/04/18 02:29

14m

retest repro

upstream

report log

2025/02/25 20:54

24m

retest repro

upstream

OK log

2025/02/25 19:31

25m

retest repro

upstream

OK log

2025/01/05 10:01

57m

retest repro

upstream

report log

2024/12/17 19:12

13m

retest repro

upstream

report log

2024/12/17 19:12

13m

retest repro

upstream

report log

bi_fields_set=0 bi_dir=4096 bi_dir_offset=2695648408715017799 bi_subvol=0 bi_parent_subvol=0 bi_nocow=0, fixing Oops: general protection fault, probably for non-canonical address 0xec6408ae4eae6c2e: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: maybe wild-memory-access in range [0x6320657275736170-0x6320657275736177] CPU: 0 UID: 0 PID: 5828 Comm: syz-executor420 Not tainted 6.13.0-rc1-syzkaller-00005-gceb8bf2ceaa7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:string_nocheck lib/vsprintf.c:646 [inline] RIP: 0010:string+0x1a5/0x2b0 lib/vsprintf.c:728 Code: 85 c0 0f 84 db 00 00 00 4c 89 7c 24 08 49 89 c7 49 ff cf 31 db 49 8d 3c 1c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 5d 4c 8d 6c 1d 00 41 0f b6 2c 1c 31 ff 89 ee RSP: 0018:ffffc90003d26570 EFLAGS: 00010206 RAX: 0c640cae4eae6c2e RBX: 0000000000000000 RCX: dffffc0000000000 RDX: ffff88802ffabc00 RSI: ffffffffffffffff RDI: 6320657275736172 RBP: 0000000000000020 R08: ffffffff8bc3c8b7 R09: ffffffff8bc38f54 R10: 0000000000000012 R11: ffff88802ffabc00 R12: 6320657275736172 R13: 0000000000000000 R14: 0000000000000020 R15: fffffffffffffffe FS: 000055558715a380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562d64415048 CR3: 000000007ac96000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> vsnprintf+0x1101/0x1da0 lib/vsprintf.c:2848 bch2_prt_vprintf+0x1a2/0x700 fs/bcachefs/printbuf.c:166 __bch2_fsck_err+0x2c2/0x1570 fs/bcachefs/error.c:266 check_dirent_inode_dirent+0xf3b/0x1a30 fs/bcachefs/fsck.c:2214 check_dirent_target+0x117/0xf70 fs/bcachefs/fsck.c:2244 check_dirent fs/bcachefs/fsck.c:2518 [inline] bch2_check_dirents+0x12e9/0x2570 fs/bcachefs/fsck.c:2552 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:191 bch2_run_recovery_passes+0x3a7/0x880 fs/bcachefs/recovery_passes.c:244 bch2_fs_recovery+0x25cc/0x39d0 fs/bcachefs/recovery.c:861 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1037 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f935bd4d8fa Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcad1bf668 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffcad1bf680 RCX: 00007f935bd4d8fa RDX: 00000000200058c0 RSI: 0000000020000000 RDI: 00007ffcad1bf680 RBP: 0000000000000004 R08: 00007ffcad1bf6c0 R09: 00000000000059aa R10: 0000000000010040 R11: 0000000000000282 R12: 0000000000010040 R13: 00007ffcad1bf6c0 R14: 0000000000000003 R15: 0000000001000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:string_nocheck lib/vsprintf.c:646 [inline] RIP: 0010:string+0x1a5/0x2b0 lib/vsprintf.c:728 Code: 85 c0 0f 84 db 00 00 00 4c 89 7c 24 08 49 89 c7 49 ff cf 31 db 49 8d 3c 1c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 5d 4c 8d 6c 1d 00 41 0f b6 2c 1c 31 ff 89 ee RSP: 0018:ffffc90003d26570 EFLAGS: 00010206 RAX: 0c640cae4eae6c2e RBX: 0000000000000000 RCX: dffffc0000000000 RDX: ffff88802ffabc00 RSI: ffffffffffffffff RDI: 6320657275736172 RBP: 0000000000000020 R08: ffffffff8bc3c8b7 R09: ffffffff8bc38f54 R10: 0000000000000012 R11: ffff88802ffabc00 R12: 6320657275736172 R13: 0000000000000000 R14: 0000000000000020 R15: fffffffffffffffe FS: 000055558715a380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562d64416018 CR3: 000000007ac96000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 85 c0 test %eax,%eax 2: 0f 84 db 00 00 00 je 0xe3 8: 4c 89 7c 24 08 mov %r15,0x8(%rsp) d: 49 89 c7 mov %rax,%r15 10: 49 ff cf dec %r15 13: 31 db xor %ebx,%ebx 15: 49 8d 3c 1c lea (%r12,%rbx,1),%rdi 19: 48 89 f8 mov %rdi,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 75 5d jne 0x8f 32: 4c 8d 6c 1d 00 lea 0x0(%rbp,%rbx,1),%r13 37: 41 0f b6 2c 1c movzbl (%r12,%rbx,1),%ebp 3c: 31 ff xor %edi,%edi 3e: 89 ee mov %ebp,%esi

Crashes (4):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Assets (help?)	Manager	Title
2024/12/03 19:00	upstream	ceb8bf2ceaa7	578925bc	.config	strace log	report	syz / log	C	[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-upstream-fs	general protection fault in bch2_prt_vprintf
2024/11/29 07:19	upstream	65ae975e97d5	5df23865	.config	console log	report	syz / log	C	[disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro]	ci-snapshot-upstream-root	general protection fault in bch2_prt_vprintf
2024/11/29 06:43	upstream	65ae975e97d5	5df23865	.config	console log	report	syz / log	C	[disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro]	ci-snapshot-upstream-root	general protection fault in bch2_prt_vprintf
2024/11/29 06:07	upstream	65ae975e97d5	5df23865	.config	console log	report			[disk image (non-bootable)] [vmlinux] [kernel image]	ci-snapshot-upstream-root	general protection fault in bch2_prt_vprintf

Crashes (4):

Assets (help?)