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UBSAN: shift-out-of-bounds in ocfs2_fill_super

Status: upstream: reported C repro on 2024/09/30 21:30
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+c6104ecfe56e0fd6b616@syzkaller.appspotmail.com
First crash: 90d, last: 4d09h
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2024/11/16 linux-5.15.y (ToT) d98fd109f827 C [report] UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/10/01 upstream (ToT) e32cde8d2bd7 C [report] UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/16 upstream (ToT) e8bdb3c8be08 C Didn't crash
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream UBSAN: shift-out-of-bounds in ocfs2_fill_super ocfs2 C 199 69d 137d 28/28 fixed on 2024/10/22 11:56
upstream UBSAN: shift-out-of-bounds in ocfs2_fill_super (2) ocfs2 C 81 44d 64d 28/28 fixed on 2024/12/16 09:50
linux-6.1 UBSAN: shift-out-of-bounds in ocfs2_fill_super origin:upstream C 19 1d05h 64d 0/3 upstream: reported C repro on 2024/10/27 03:28
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/10/15 00:49 0m retest repro linux-5.15.y error
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2024/11/19 13:11 1m fix candidate upstream error job log
2024/10/31 17:37 1m bisect fix linux-5.15.y error job log

Sample crash report:
         option from the mount to silence this warning.
=======================================================
================================================================================
UBSAN: shift-out-of-bounds in fs/ocfs2/super.c:2342:10
shift exponent 4278976521 is too large for 32-bit type 'int'
CPU: 1 PID: 4021 Comm: syz-executor465 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __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
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_shift_out_of_bounds+0x2f8/0x378 lib/ubsan.c:321
 ocfs2_verify_volume fs/ocfs2/super.c:2342 [inline]
 ocfs2_sb_probe fs/ocfs2/super.c:793 [inline]
 ocfs2_fill_super+0xe60/0x498c fs/ocfs2/super.c:989
 mount_bdev+0x274/0x370 fs/super.c:1398
 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1528
 do_new_mount+0x278/0x8fc fs/namespace.c:3005
 path_mount+0x594/0x101c fs/namespace.c:3335
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount fs/namespace.c:3533 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3533
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
================================================================================
================================================================================
UBSAN: shift-out-of-bounds in fs/ocfs2/super.c:2038:24
shift exponent 15990789 is too large for 32-bit type 'int'
CPU: 1 PID: 4021 Comm: syz-executor465 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __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
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_shift_out_of_bounds+0x2f8/0x378 lib/ubsan.c:321
 ocfs2_initialize_super fs/ocfs2/super.c:2038 [inline]
 ocfs2_fill_super+0x4194/0x498c fs/ocfs2/super.c:995
 mount_bdev+0x274/0x370 fs/super.c:1398
 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1528
 do_new_mount+0x278/0x8fc fs/namespace.c:3005
 path_mount+0x594/0x101c fs/namespace.c:3335
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount fs/namespace.c:3533 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3533
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
================================================================================
(syz-executor465,4021,1):ocfs2_init_global_system_inodes:462 ERROR: status = -22
(syz-executor465,4021,1):ocfs2_init_global_system_inodes:464 ERROR: Unable to load system inode 2, possibly corrupt fs?
(syz-executor465,4021,1):ocfs2_init_global_system_inodes:473 ERROR: status = -22
(syz-executor465,4021,1):ocfs2_initialize_super:2278 ERROR: status = -22
(syz-executor465,4021,1):ocfs2_fill_super:1177 ERROR: status = -22

Crashes (26):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/30 23:14 linux-5.15.y 3a5928702e71 bbd4e0a4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/12/26 05:25 linux-5.15.y 91786f140358 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/12/26 05:25 linux-5.15.y 91786f140358 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/12/07 12:45 linux-5.15.y 0a51d2d4527b 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/12/07 12:45 linux-5.15.y 0a51d2d4527b 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/26 23:19 linux-5.15.y 0a51d2d4527b e9a9a9f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/26 23:16 linux-5.15.y 0a51d2d4527b e9a9a9f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/25 15:33 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/10 23:49 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/10 23:48 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/09 23:23 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/09 23:21 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/09/30 22:00 linux-5.15.y 3a5928702e71 bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/09/30 21:59 linux-5.15.y 3a5928702e71 bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/12/07 16:07 linux-5.15.y 0a51d2d4527b 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/30 17:59 linux-5.15.y 0a51d2d4527b 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/30 17:50 linux-5.15.y 0a51d2d4527b 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/26 20:25 linux-5.15.y 0a51d2d4527b e9a9a9f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/26 20:25 linux-5.15.y 0a51d2d4527b e9a9a9f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/21 16:24 linux-5.15.y 0a51d2d4527b 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/21 16:24 linux-5.15.y 0a51d2d4527b 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/10 22:55 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/10 22:55 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/09 19:08 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/11/09 19:08 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
2024/09/30 21:30 linux-5.15.y 3a5928702e71 bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 UBSAN: shift-out-of-bounds in ocfs2_fill_super
* Struck through repros no longer work on HEAD.