kernel BUG in indx_clear

Status: upstream: reported C repro on 2026/10/30 14:59
Reported-by: syzbot+62111f51d685826d84df@syzkaller.appspotmail.com
First crash: 13d, last: 9d00h
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 kernel BUG in indx_clear -1 syz, C 233 1h14m 59d 0/2 upstream: reported C repro on 2026/09/14 13:22

Sample crash report:
------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:28!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4415 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__phys_addr+0x151/0x170 arch/x86/mm/physaddr.c:28
Code: 75 ce 99 00 e9 41 ff ff ff e8 cb 6a 48 00 48 c7 c7 00 25 9a 8d 48 89 de 4c 89 f2 e8 b9 bd fe 02 e9 49 ff ff ff e8 af 6a 48 00 <0f> 0b e8 a8 6a 48 00 0f 0b e8 a1 6a 48 00 0f 0b 66 2e 0f 1f 84 00
RSP: 0018:ffffc900015b7970 EFLAGS: 00010293
RAX: ffffffff8139fdf1 RBX: deadc62d00000000 RCX: ffff88802b2c8000
RDX: 0000000000000000 RSI: dead4ead80000000 RDI: deadc62d00000000
RBP: 0000000000000001 R08: ffff88805e70f0e0 R09: ffff88805e70f0d0
R10: dffffc0000000000 R11: ffffed100bce1e1d R12: dffffc0000000000
R13: ffff88805e70f1c8 R14: dead4ead80000000 R15: dffffc0000000000
FS:  00005555756a1500(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4fe03a1796 CR3: 000000005cc38000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 virt_to_folio include/linux/mm.h:913 [inline]
 kfree+0x42/0x1a0 mm/slab_common.c:980
 run_close fs/ntfs3/ntfs_fs.h:938 [inline]
 indx_clear+0x3a/0x80 fs/ntfs3/index.c:910
 ni_clear+0x20d/0x470 fs/ntfs3/frecord.c:123
 evict+0x4b2/0x9d0 fs/inode.c:703
 __dentry_kill+0x412/0x630 fs/dcache.c:611
 shrink_dentry_list+0x396/0x6a0 fs/dcache.c:1206
 shrink_dcache_parent+0xae/0x3f0 fs/dcache.c:-1
 do_one_tree+0x23/0xe0 fs/dcache.c:1689
 shrink_dcache_for_umount+0x65/0x110 fs/dcache.c:1706
 generic_shutdown_super+0x63/0x340 fs/super.c:473
 kill_block_super+0x7c/0xe0 fs/super.c:1481
 deactivate_locked_super+0x93/0xf0 fs/super.c:332
 cleanup_mnt+0x471/0x4f0 fs/namespace.c:1191
 task_work_run+0x1d0/0x260 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213
 __syscall_exit_to_user_mode_work kernel/entry/common.c:295 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:306
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5a0f7a0797
Code: a2 c7 05 5c 9f 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffdbcd7eb58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f5a0f835f63 RCX: 00007f5a0f7a0797
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdbcd7ec10
RBP: 00007ffdbcd7ec10 R08: 00007ffdbcd7fc10 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdbcd7fca0
R13: 00007f5a0f835f63 R14: 0000000000015199 R15: 00007ffdbcd7fce0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__phys_addr+0x151/0x170 arch/x86/mm/physaddr.c:28
Code: 75 ce 99 00 e9 41 ff ff ff e8 cb 6a 48 00 48 c7 c7 00 25 9a 8d 48 89 de 4c 89 f2 e8 b9 bd fe 02 e9 49 ff ff ff e8 af 6a 48 00 <0f> 0b e8 a8 6a 48 00 0f 0b e8 a1 6a 48 00 0f 0b 66 2e 0f 1f 84 00
RSP: 0018:ffffc900015b7970 EFLAGS: 00010293
RAX: ffffffff8139fdf1 RBX: deadc62d00000000 RCX: ffff88802b2c8000
RDX: 0000000000000000 RSI: dead4ead80000000 RDI: deadc62d00000000
RBP: 0000000000000001 R08: ffff88805e70f0e0 R09: ffff88805e70f0d0
R10: dffffc0000000000 R11: ffffed100bce1e1d R12: dffffc0000000000
R13: ffff88805e70f1c8 R14: dead4ead80000000 R15: dffffc0000000000
FS:  00005555756a1500(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4fe03a1796 CR3: 000000005cc38000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (40):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/31 08:00 linux-6.1.y 08889840163e 0ec395f8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/04 12:21 linux-6.1.y 08889840163e 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/04 12:19 linux-6.1.y 08889840163e 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/04 12:19 linux-6.1.y 08889840163e 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/04 12:19 linux-6.1.y 08889840163e 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/03 12:56 linux-6.1.y 08889840163e e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/03 12:56 linux-6.1.y 08889840163e e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/03 12:56 linux-6.1.y 08889840163e e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/03 12:56 linux-6.1.y 08889840163e e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/02 20:21 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/02 11:33 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/02 11:33 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/02 11:33 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/02 11:33 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/01 03:03 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/01 03:03 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/01 03:03 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/01 03:03 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/11/01 03:03 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 20:34 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 20:00 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 19:59 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 14:33 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 14:33 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 14:30 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 11:59 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 10:14 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 10:14 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 10:13 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/31 10:13 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 22:35 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 22:35 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 22:35 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 22:18 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 17:45 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 17:45 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 17:45 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 17:45 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 17:45 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
2026/10/30 14:58 linux-6.1.y 08889840163e b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan kernel BUG in indx_clear
* Struck through repros no longer work on HEAD.