kernel BUG in sg_init_one

Status: upstream: reported C repro on 2026/08/06 01:45
Reported-by: syzbot+2d58cfd97f0f9de562b6@syzkaller.appspotmail.com
First crash: 1d23h, last: 5h05m
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in sg_init_one -1 syz, C 91 3h07m 2d08h 0/3 upstream: reported C repro on 2026/08/05 16:23
linux-6.6 kernel BUG in sg_init_one -1 syz, C 3 4d03h 10d 0/2 upstream: reported C repro on 2026/07/28 11:30
upstream kernel BUG in sg_init_one mm -1 syz, C 1032 862d 872d 25/29 fixed on 2024/05/22 23:08

Sample crash report:
------------[ cut here ]------------
kernel BUG at include/linux/scatterlist.h:143!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4319 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:sg_set_buf include/linux/scatterlist.h:143 [inline]
RIP: 0010:sg_init_one+0x14a/0x160 lib/scatterlist.c:141
Code: 80 c1 03 38 c1 7c cf e8 f4 4d d8 fd eb c8 44 89 f1 80 e1 07 80 c1 03 38 c1 7c d2 4c 89 f7 e8 dd 4d d8 fd eb c8 e8 b6 2a 93 fd <0f> 0b e8 af 2a 93 fd 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00
RSP: 0018:ffffc90002f0f928 EFLAGS: 00010293
RAX: ffffffff83e5d1fa RBX: ffffc90002f0fc40 RCX: ffff888027433b80
RDX: 0000000000000000 RSI: 0000000080000010 RDI: 0000778000000010
RBP: 0000000000000000 R08: ffffc90002f0fa9f R09: ffffc90002f0fa88
R10: dffffc0000000000 R11: fffff520005e1f54 R12: 1ffff920005e1f50
R13: dffffc0000000000 R14: ffffc90002f0fa80 R15: 0000000000000010
FS:  0000555576a97500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fdd10cd090 CR3: 0000000021214000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 software_key_eds_op+0x4f6/0xb30 crypto/asymmetric_keys/public_key.c:277
 keyctl_pkey_e_d_s+0x208/0x300 security/keys/keyctl_pkey.c:262
 __do_sys_keyctl security/keys/keyctl.c:2009 [inline]
 __se_sys_keyctl+0x6c6/0xa20 security/keys/keyctl.c:1886
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6a98e820d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffba139958 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f6a99109fa0 RCX: 00007f6a98e820d9
RDX: 00002000000007c0 RSI: 0000200000000780 RDI: 0000000000000019
RBP: 00007f6a98f19024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a99109fac R14: 00007f6a99109fa0 R15: 00007f6a99109fa0
 </TASK>
Modules linked in:
---[ end trace 25ada7711fec7263 ]---
RIP: 0010:sg_set_buf include/linux/scatterlist.h:143 [inline]
RIP: 0010:sg_init_one+0x14a/0x160 lib/scatterlist.c:141
Code: 80 c1 03 38 c1 7c cf e8 f4 4d d8 fd eb c8 44 89 f1 80 e1 07 80 c1 03 38 c1 7c d2 4c 89 f7 e8 dd 4d d8 fd eb c8 e8 b6 2a 93 fd <0f> 0b e8 af 2a 93 fd 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00
RSP: 0018:ffffc90002f0f928 EFLAGS: 00010293
RAX: ffffffff83e5d1fa RBX: ffffc90002f0fc40 RCX: ffff888027433b80
RDX: 0000000000000000 RSI: 0000000080000010 RDI: 0000778000000010
RBP: 0000000000000000 R08: ffffc90002f0fa9f R09: ffffc90002f0fa88
R10: dffffc0000000000 R11: fffff520005e1f54 R12: 1ffff920005e1f50
R13: dffffc0000000000 R14: ffffc90002f0fa80 R15: 0000000000000010
FS:  0000555576a97500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fdd1149470 CR3: 0000000021214000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (37):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/06 09:10 linux-5.15.y 6e2fd6534337 cd5b1963 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 19:54 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 19:53 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 19:33 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 19:33 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 18:58 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 18:58 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 18:09 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 18:07 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 17:29 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 17:28 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 15:24 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 15:23 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 15:20 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 15:20 linux-5.15.y aabd761612db e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 05:19 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 05:19 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 05:16 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 05:16 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 05:15 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 05:15 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 04:39 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 04:39 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 02:47 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 02:46 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 02:32 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 02:31 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 02:29 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 02:29 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 01:51 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 01:51 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 00:18 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 00:18 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 00:10 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/07 00:10 linux-5.15.y 9c7634c60784 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/06 01:45 linux-5.15.y 6e2fd6534337 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
2026/08/06 01:45 linux-5.15.y 6e2fd6534337 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in sg_init_one
* Struck through repros no longer work on HEAD.