AI Trajectory

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only replaces `seq_buf_puts` with `seq_buf_putc` for printing a single newline character in various partition parsers. This is a minor optimization/cleanup that does not functionally alter the execution flow or logic of the kernel.",
  "WorthFuzzing": false
}

null

{
  "PatchDiff": "commit dd6e225275fc561b57f389bbe7eee60e38ac5f48\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Mon Jun 29 07:47:06 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/block/partitions/acorn.c b/block/partitions/acorn.c\nindex 067d6a27a3bdf3..c4825051744818 100644\n--- a/block/partitions/acorn.c\n+++ b/block/partitions/acorn.c\n@@ -290,7 +290,7 @@ int adfspart_check_ADFS(struct parsed_partitions *state)\n \t\t\tbreak;\n \t\t}\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \treturn 1;\n }\n #endif\n@@ -397,7 +397,7 @@ int adfspart_check_ICS(struct parsed_partitions *state)\n \t}\n \n \tput_dev_sector(sect);\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \treturn 1;\n }\n #endif\n@@ -468,7 +468,7 @@ int adfspart_check_POWERTEC(struct parsed_partitions *state)\n \t}\n \n \tput_dev_sector(sect);\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \treturn 1;\n }\n #endif\n@@ -539,7 +539,7 @@ int adfspart_check_EESOX(struct parsed_partitions *state)\n \n \t\tsize = get_capacity(state-\u003edisk);\n \t\tput_partition(state, slot++, start, size - start);\n-\t\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\t\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \t}\n \n \treturn i ? 1 : 0;\ndiff --git a/block/partitions/amiga.c b/block/partitions/amiga.c\nindex 8325046a14eb95..a272f64450ecc8 100644\n--- a/block/partitions/amiga.c\n+++ b/block/partitions/amiga.c\n@@ -194,7 +194,7 @@ int amiga_partition(struct parsed_partitions *state)\n \t\t}\n \t\tres = 1;\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \n rdb_done:\n \treturn res;\ndiff --git a/block/partitions/atari.c b/block/partitions/atari.c\nindex 2438d1448f382c..58863c1a272385 100644\n--- a/block/partitions/atari.c\n+++ b/block/partitions/atari.c\n@@ -150,7 +150,7 @@ int atari_partition(struct parsed_partitions *state)\n #endif\n \tput_dev_sector(sect);\n \n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \n \treturn 1;\n }\ndiff --git a/block/partitions/cmdline.c b/block/partitions/cmdline.c\nindex 4fd52ed154b4e8..50075eccaade44 100644\n--- a/block/partitions/cmdline.c\n+++ b/block/partitions/cmdline.c\n@@ -377,7 +377,7 @@ int cmdline_partition(struct parsed_partitions *state)\n \tcmdline_parts_set(parts, disk_size, state);\n \tcmdline_parts_verifier(1, state);\n \n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \n \treturn 1;\n }\ndiff --git a/block/partitions/efi.c b/block/partitions/efi.c\nindex 9865d59093fac0..650b91efc832af 100644\n--- a/block/partitions/efi.c\n+++ b/block/partitions/efi.c\n@@ -751,6 +751,6 @@ int efi_partition(struct parsed_partitions *state)\n \t}\n \tkfree(ptes);\n \tkfree(gpt);\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \treturn 1;\n }\ndiff --git a/block/partitions/ibm.c b/block/partitions/ibm.c\nindex 54047e722a9d94..a57de3b192fc21 100644\n--- a/block/partitions/ibm.c\n+++ b/block/partitions/ibm.c\n@@ -217,7 +217,7 @@ static int find_vol1_partitions(struct parsed_partitions *state,\n \t\tblk++;\n \t\tdata = read_part_sector(state, blk * secperblk, \u0026sect);\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \n \tif (!data)\n \t\treturn -1;\n@@ -254,7 +254,7 @@ static int find_lnx1_partitions(struct parsed_partitions *state,\n \t\tsize = nr_sectors;\n \t\tif (size != geo_size) {\n \t\t\tif (!info) {\n-\t\t\t\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\t\t\t\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \t\t\t\treturn 1;\n \t\t\t}\n \t\t\tif (!strcmp(info-\u003etype, \"ECKD\"))\n@@ -266,7 +266,7 @@ static int find_lnx1_partitions(struct parsed_partitions *state,\n \t/* first and only partition starts in the first block after the label */\n \toffset = labelsect + secperblk;\n \tput_partition(state, 1, offset, size - offset);\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \treturn 1;\n }\n \n@@ -307,7 +307,7 @@ static int find_cms1_partitions(struct parsed_partitions *state,\n \t}\n \n \tput_partition(state, 1, offset, size-offset);\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \treturn 1;\n }\n \n@@ -388,7 +388,7 @@ int ibm_partition(struct parsed_partitions *state)\n \t\t\tsize = nr_sectors;\n \t\t\toffset = (info-\u003elabel_block + 1) * (blocksize \u003e\u003e 9);\n \t\t\tput_partition(state, 1, offset, size-offset);\n-\t\t\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\t\t\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \t\t}\n \t} else\n \t\tres = 0;\ndiff --git a/block/partitions/karma.c b/block/partitions/karma.c\nindex a4e3c505017767..b0ab84169538e9 100644\n--- a/block/partitions/karma.c\n+++ b/block/partitions/karma.c\n@@ -53,7 +53,7 @@ int karma_partition(struct parsed_partitions *state)\n \t\t}\n \t\tslot++;\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \tput_dev_sector(sect);\n \treturn 1;\n }\ndiff --git a/block/partitions/ldm.c b/block/partitions/ldm.c\nindex c0bdcae58a3ee0..d1bbc9fb09f939 100644\n--- a/block/partitions/ldm.c\n+++ b/block/partitions/ldm.c\n@@ -597,7 +597,7 @@ static bool ldm_create_data_partitions (struct parsed_partitions *pp,\n \t\tpart_num++;\n \t}\n \n-\tseq_buf_puts(\u0026pp-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026pp-\u003epp_buf, '\\n');\n \treturn true;\n }\n \ndiff --git a/block/partitions/mac.c b/block/partitions/mac.c\nindex df03ca428e1574..bb570b5a6eaab2 100644\n--- a/block/partitions/mac.c\n+++ b/block/partitions/mac.c\n@@ -152,6 +152,6 @@ int mac_partition(struct parsed_partitions *state)\n #endif\n \n \tput_dev_sector(sect);\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \treturn 1;\n }\ndiff --git a/block/partitions/msdos.c b/block/partitions/msdos.c\nindex 200ea53ea6a2c8..4a96541f53515e 100644\n--- a/block/partitions/msdos.c\n+++ b/block/partitions/msdos.c\n@@ -608,7 +608,7 @@ int msdos_partition(struct parsed_partitions *state)\n \t\t\tfb = (struct fat_boot_sector *) data;\n \t\t\tif (slot == 1 \u0026\u0026 fb-\u003ereserved \u0026\u0026 fb-\u003efats\n \t\t\t\t\u0026\u0026 fat_valid_media(fb-\u003emedia)) {\n-\t\t\t\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\t\t\t\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \t\t\t\tput_dev_sector(sect);\n \t\t\t\treturn 1;\n \t\t\t} else {\n@@ -672,7 +672,7 @@ int msdos_partition(struct parsed_partitions *state)\n \t\t\tseq_buf_puts(\u0026state-\u003epp_buf, \"[EZD]\");\n \t}\n \n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \n \t/* second pass - output for each on a separate line */\n \tp = (struct msdos_partition *) (0x1be + data);\ndiff --git a/block/partitions/of.c b/block/partitions/of.c\nindex 53664ea06b6540..7803e6f4ecdd98 100644\n--- a/block/partitions/of.c\n+++ b/block/partitions/of.c\n@@ -104,7 +104,7 @@ int of_partition(struct parsed_partitions *state)\n \t\tslot++;\n \t}\n \n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \n \tof_node_put(partitions_np);\n \treturn 1;\ndiff --git a/block/partitions/osf.c b/block/partitions/osf.c\nindex 2a692584dba91a..6f83d4759a5d4b 100644\n--- a/block/partitions/osf.c\n+++ b/block/partitions/osf.c\n@@ -81,7 +81,7 @@ int osf_partition(struct parsed_partitions *state)\n \t\t\t\tle32_to_cpu(partition-\u003ep_size));\n \t\tslot++;\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \tput_dev_sector(sect);\n \treturn 1;\n }\ndiff --git a/block/partitions/sgi.c b/block/partitions/sgi.c\nindex 2383ca63cd6645..f743e358341758 100644\n--- a/block/partitions/sgi.c\n+++ b/block/partitions/sgi.c\n@@ -79,7 +79,7 @@ int sgi_partition(struct parsed_partitions *state)\n \t\t}\n \t\tslot++;\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \tput_dev_sector(sect);\n \treturn 1;\n }\ndiff --git a/block/partitions/sun.c b/block/partitions/sun.c\nindex 92c645fcd2e09b..c71bad78f34af0 100644\n--- a/block/partitions/sun.c\n+++ b/block/partitions/sun.c\n@@ -121,7 +121,7 @@ int sun_partition(struct parsed_partitions *state)\n \t\t}\n \t\tslot++;\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \tput_dev_sector(sect);\n \treturn 1;\n }\ndiff --git a/block/partitions/sysv68.c b/block/partitions/sysv68.c\nindex 470e0f9de7be38..31d348ac2dfb3e 100644\n--- a/block/partitions/sysv68.c\n+++ b/block/partitions/sysv68.c\n@@ -86,7 +86,7 @@ int sysv68_partition(struct parsed_partitions *state)\n \t\t}\n \t\tslot++;\n \t}\n-\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \tput_dev_sector(sect);\n \treturn 1;\n }\ndiff --git a/block/partitions/ultrix.c b/block/partitions/ultrix.c\nindex b4b9ddc57a5d6f..8ac42fda25d161 100644\n--- a/block/partitions/ultrix.c\n+++ b/block/partitions/ultrix.c\n@@ -39,7 +39,7 @@ int ultrix_partition(struct parsed_partitions *state)\n \t\t\t\t\t      label-\u003ept_part[i].pi_blkoff,\n \t\t\t\t\t      label-\u003ept_part[i].pi_nblocks);\n \t\tput_dev_sector(sect);\n-\t\tseq_buf_puts(\u0026state-\u003epp_buf, \"\\n\");\n+\t\tseq_buf_putc(\u0026state-\u003epp_buf, '\\n');\n \t\treturn 1;\n \t} else {\n \t\tput_dev_sector(sect);\n"
}

gemini-3.1-pro-preview

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only replaces `seq_buf_puts` with `seq_buf_putc` for printing a single newline character in various partition parsers. This is a minor optimization/cleanup that does not functionally alter the execution flow or logic of the kernel.",
  "WorthFuzzing": false
}

You are an expert Linux kernel maintainer.
Your job is to review a provided patch series and determine
if it makes functional changes to the kernel that should be fuzzed.

IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on your internal knowledge of the kernel. You must actively
use your code access tools to examine the actual source code and confirm any assumptions.

Return WorthFuzzing=false if the patch only contains:
- Modifications to Documentation/, Kconfig files, or code comments.
- Purely decorative changes, such as logging (e.g., pr_err, printk) or tracepoints.
- Changes to numeric constants or macros that do not functionally alter execution flow.
- Code paths that are impossible to reach in virtualized environments like GCE or QEMU,
even when utilizing software-emulated hardware (e.g., usb gadget, mac80211_hwsim).

If it modifies reachable core kernel logic, drivers, or architectures, use your code search
tools to verify the code can be executed, then return WorthFuzzing=true.

When returning WorthFuzzing=true, you MUST ALSO:
1. Extract any specific kernel functions that should be heavily fuzzed into FocusSymbols.
   Avoid listing generic hot-path functions to prevent skewed test distributions.
2. Identify any specific CONFIG_ options required to properly test this new/modified feature.
   Go and look into the Kconfig files and check for ifdefs around the code, do not make assumptions.
   Do not list too generic configs (we already have them enabled). Only list those that
   specifically cover the modified code. List them in the EnableConfigs output array,
   and DO NOT add a 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4").
Prefer calling several tools at the same time to save round-trips.


Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.

For your convenience, here is the diff of the changes:
commit dd6e225275fc561b57f389bbe7eee60e38ac5f48
Author: syz-cluster <triage@syzkaller.com>
Date:   Mon Jun 29 07:47:06 2026 +0000

    syz-cluster: applied patch under review

diff --git a/block/partitions/acorn.c b/block/partitions/acorn.c
index 067d6a27a3bdf3..c4825051744818 100644
--- a/block/partitions/acorn.c
+++ b/block/partitions/acorn.c
@@ -290,7 +290,7 @@ int adfspart_check_ADFS(struct parsed_partitions *state)
 			break;
 		}
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	return 1;
 }
 #endif
@@ -397,7 +397,7 @@ int adfspart_check_ICS(struct parsed_partitions *state)
 	}
 
 	put_dev_sector(sect);
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	return 1;
 }
 #endif
@@ -468,7 +468,7 @@ int adfspart_check_POWERTEC(struct parsed_partitions *state)
 	}
 
 	put_dev_sector(sect);
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	return 1;
 }
 #endif
@@ -539,7 +539,7 @@ int adfspart_check_EESOX(struct parsed_partitions *state)
 
 		size = get_capacity(state->disk);
 		put_partition(state, slot++, start, size - start);
-		seq_buf_puts(&state->pp_buf, "\n");
+		seq_buf_putc(&state->pp_buf, '\n');
 	}
 
 	return i ? 1 : 0;
diff --git a/block/partitions/amiga.c b/block/partitions/amiga.c
index 8325046a14eb95..a272f64450ecc8 100644
--- a/block/partitions/amiga.c
+++ b/block/partitions/amiga.c
@@ -194,7 +194,7 @@ int amiga_partition(struct parsed_partitions *state)
 		}
 		res = 1;
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 
 rdb_done:
 	return res;
diff --git a/block/partitions/atari.c b/block/partitions/atari.c
index 2438d1448f382c..58863c1a272385 100644
--- a/block/partitions/atari.c
+++ b/block/partitions/atari.c
@@ -150,7 +150,7 @@ int atari_partition(struct parsed_partitions *state)
 #endif
 	put_dev_sector(sect);
 
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 
 	return 1;
 }
diff --git a/block/partitions/cmdline.c b/block/partitions/cmdline.c
index 4fd52ed154b4e8..50075eccaade44 100644
--- a/block/partitions/cmdline.c
+++ b/block/partitions/cmdline.c
@@ -377,7 +377,7 @@ int cmdline_partition(struct parsed_partitions *state)
 	cmdline_parts_set(parts, disk_size, state);
 	cmdline_parts_verifier(1, state);
 
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 
 	return 1;
 }
diff --git a/block/partitions/efi.c b/block/partitions/efi.c
index 9865d59093fac0..650b91efc832af 100644
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -751,6 +751,6 @@ int efi_partition(struct parsed_partitions *state)
 	}
 	kfree(ptes);
 	kfree(gpt);
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	return 1;
 }
diff --git a/block/partitions/ibm.c b/block/partitions/ibm.c
index 54047e722a9d94..a57de3b192fc21 100644
--- a/block/partitions/ibm.c
+++ b/block/partitions/ibm.c
@@ -217,7 +217,7 @@ static int find_vol1_partitions(struct parsed_partitions *state,
 		blk++;
 		data = read_part_sector(state, blk * secperblk, &sect);
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 
 	if (!data)
 		return -1;
@@ -254,7 +254,7 @@ static int find_lnx1_partitions(struct parsed_partitions *state,
 		size = nr_sectors;
 		if (size != geo_size) {
 			if (!info) {
-				seq_buf_puts(&state->pp_buf, "\n");
+				seq_buf_putc(&state->pp_buf, '\n');
 				return 1;
 			}
 			if (!strcmp(info->type, "ECKD"))
@@ -266,7 +266,7 @@ static int find_lnx1_partitions(struct parsed_partitions *state,
 	/* first and only partition starts in the first block after the label */
 	offset = labelsect + secperblk;
 	put_partition(state, 1, offset, size - offset);
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	return 1;
 }
 
@@ -307,7 +307,7 @@ static int find_cms1_partitions(struct parsed_partitions *state,
 	}
 
 	put_partition(state, 1, offset, size-offset);
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	return 1;
 }
 
@@ -388,7 +388,7 @@ int ibm_partition(struct parsed_partitions *state)
 			size = nr_sectors;
 			offset = (info->label_block + 1) * (blocksize >> 9);
 			put_partition(state, 1, offset, size-offset);
-			seq_buf_puts(&state->pp_buf, "\n");
+			seq_buf_putc(&state->pp_buf, '\n');
 		}
 	} else
 		res = 0;
diff --git a/block/partitions/karma.c b/block/partitions/karma.c
index a4e3c505017767..b0ab84169538e9 100644
--- a/block/partitions/karma.c
+++ b/block/partitions/karma.c
@@ -53,7 +53,7 @@ int karma_partition(struct parsed_partitions *state)
 		}
 		slot++;
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	put_dev_sector(sect);
 	return 1;
 }
diff --git a/block/partitions/ldm.c b/block/partitions/ldm.c
index c0bdcae58a3ee0..d1bbc9fb09f939 100644
--- a/block/partitions/ldm.c
+++ b/block/partitions/ldm.c
@@ -597,7 +597,7 @@ static bool ldm_create_data_partitions (struct parsed_partitions *pp,
 		part_num++;
 	}
 
-	seq_buf_puts(&pp->pp_buf, "\n");
+	seq_buf_putc(&pp->pp_buf, '\n');
 	return true;
 }
 
diff --git a/block/partitions/mac.c b/block/partitions/mac.c
index df03ca428e1574..bb570b5a6eaab2 100644
--- a/block/partitions/mac.c
+++ b/block/partitions/mac.c
@@ -152,6 +152,6 @@ int mac_partition(struct parsed_partitions *state)
 #endif
 
 	put_dev_sector(sect);
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	return 1;
 }
diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c
index 200ea53ea6a2c8..4a96541f53515e 100644
--- a/block/partitions/msdos.c
+++ b/block/partitions/msdos.c
@@ -608,7 +608,7 @@ int msdos_partition(struct parsed_partitions *state)
 			fb = (struct fat_boot_sector *) data;
 			if (slot == 1 && fb->reserved && fb->fats
 				&& fat_valid_media(fb->media)) {
-				seq_buf_puts(&state->pp_buf, "\n");
+				seq_buf_putc(&state->pp_buf, '\n');
 				put_dev_sector(sect);
 				return 1;
 			} else {
@@ -672,7 +672,7 @@ int msdos_partition(struct parsed_partitions *state)
 			seq_buf_puts(&state->pp_buf, "[EZD]");
 	}
 
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 
 	/* second pass - output for each on a separate line */
 	p = (struct msdos_partition *) (0x1be + data);
diff --git a/block/partitions/of.c b/block/partitions/of.c
index 53664ea06b6540..7803e6f4ecdd98 100644
--- a/block/partitions/of.c
+++ b/block/partitions/of.c
@@ -104,7 +104,7 @@ int of_partition(struct parsed_partitions *state)
 		slot++;
 	}
 
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 
 	of_node_put(partitions_np);
 	return 1;
diff --git a/block/partitions/osf.c b/block/partitions/osf.c
index 2a692584dba91a..6f83d4759a5d4b 100644
--- a/block/partitions/osf.c
+++ b/block/partitions/osf.c
@@ -81,7 +81,7 @@ int osf_partition(struct parsed_partitions *state)
 				le32_to_cpu(partition->p_size));
 		slot++;
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	put_dev_sector(sect);
 	return 1;
 }
diff --git a/block/partitions/sgi.c b/block/partitions/sgi.c
index 2383ca63cd6645..f743e358341758 100644
--- a/block/partitions/sgi.c
+++ b/block/partitions/sgi.c
@@ -79,7 +79,7 @@ int sgi_partition(struct parsed_partitions *state)
 		}
 		slot++;
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	put_dev_sector(sect);
 	return 1;
 }
diff --git a/block/partitions/sun.c b/block/partitions/sun.c
index 92c645fcd2e09b..c71bad78f34af0 100644
--- a/block/partitions/sun.c
+++ b/block/partitions/sun.c
@@ -121,7 +121,7 @@ int sun_partition(struct parsed_partitions *state)
 		}
 		slot++;
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	put_dev_sector(sect);
 	return 1;
 }
diff --git a/block/partitions/sysv68.c b/block/partitions/sysv68.c
index 470e0f9de7be38..31d348ac2dfb3e 100644
--- a/block/partitions/sysv68.c
+++ b/block/partitions/sysv68.c
@@ -86,7 +86,7 @@ int sysv68_partition(struct parsed_partitions *state)
 		}
 		slot++;
 	}
-	seq_buf_puts(&state->pp_buf, "\n");
+	seq_buf_putc(&state->pp_buf, '\n');
 	put_dev_sector(sect);
 	return 1;
 }
diff --git a/block/partitions/ultrix.c b/block/partitions/ultrix.c
index b4b9ddc57a5d6f..8ac42fda25d161 100644
--- a/block/partitions/ultrix.c
+++ b/block/partitions/ultrix.c
@@ -39,7 +39,7 @@ int ultrix_partition(struct parsed_partitions *state)
 					      label->pt_part[i].pi_blkoff,
 					      label->pt_part[i].pi_nblocks);
 		put_dev_sector(sect);
-		seq_buf_puts(&state->pp_buf, "\n");
+		seq_buf_putc(&state->pp_buf, '\n');
 		return 1;
 	} else {
 		put_dev_sector(sect);

gemini-3.1-pro-preview

null

null

							input: 5518
							output: 84
							thoughts: 196
						

**My Assessment of the Proposed Patch**

Okay, so I've been presented with a patch targeting some partition parsers within `block/partitions/`. The core of the change revolves around replacing instances of `seq_buf_puts(&state->pp_buf, "\n");` with `seq_buf_putc(&state->pp_buf, '\n');`. My initial thought is that this is purely cosmetic – an optimization. It's not modifying the program's logic or altering any execution paths, just switching from printing a string literal newline to printing the newline character directly. Therefore, I don't see any immediate value in fuzzing this specific change.

To be absolutely certain, I've just double-checked the underlying functions. `seq_buf_puts` internally calculates the string length and then calls `seq_buf_putmem`. `seq_buf_putc`, on the other hand, directly places the character in the buffer.  Crucially, the net effect on the buffer's contents will be *identical*. This confirms it; it is a minor optimization.

Therefore, I'm going to return `WorthFuzzing=false`.

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only replaces `seq_buf_puts` with `seq_buf_putc` for printing a single newline character in various partition parsers. This is a minor optimization/cleanup that does not functionally alter the execution flow or logic of the kernel.",
  "WorthFuzzing": false
}

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only replaces `seq_buf_puts` with `seq_buf_putc` for printing a single newline character in various partition parsers. This is a minor optimization/cleanup that does not functionally alter the execution flow or logic of the kernel.",
  "WorthFuzzing": false
}