Title | Replies (including bot) | Last reply |
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[PATCH] comedi: Fix use of uninitialized data in insn_rw_emulate_bits() | 1 (1) | 2025/07/07 15:33 |
[syzbot] [kernel?] KMSAN: uninit-value in dt2817_dio_insn_bits | 0 (1) | 2025/07/07 10:39 |
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Title | Replies (including bot) | Last reply |
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[PATCH] comedi: Fix use of uninitialized data in insn_rw_emulate_bits() | 1 (1) | 2025/07/07 15:33 |
[syzbot] [kernel?] KMSAN: uninit-value in dt2817_dio_insn_bits | 0 (1) | 2025/07/07 10:39 |
===================================================== BUG: KMSAN: uninit-value in __outb arch/x86/include/asm/shared/io.h:22 [inline] BUG: KMSAN: uninit-value in dt2817_dio_insn_bits+0x42d/0x4b0 drivers/comedi/drivers/dt2817.c:82 __outb arch/x86/include/asm/shared/io.h:22 [inline] dt2817_dio_insn_bits+0x42d/0x4b0 drivers/comedi/drivers/dt2817.c:82 insn_rw_emulate_bits+0x3a6/0x560 drivers/comedi/drivers.c:632 parse_insn+0x14b0/0x1780 drivers/comedi/comedi_fops.c:-1 do_insnlist_ioctl+0x412/0x890 drivers/comedi/comedi_fops.c:1568 comedi_unlocked_ioctl+0x1c6b/0x1e00 drivers/comedi/comedi_fops.c:2253 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0x23c/0x400 fs/ioctl.c:893 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:893 x64_sys_call+0x1ebe/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: comedi_dio_update_state+0x244/0x250 drivers/comedi/drivers.c:392 dt2817_dio_insn_bits+0x6e/0x4b0 drivers/comedi/drivers/dt2817.c:79 insn_rw_emulate_bits+0x3a6/0x560 drivers/comedi/drivers.c:632 parse_insn+0x14b0/0x1780 drivers/comedi/comedi_fops.c:-1 do_insnlist_ioctl+0x412/0x890 drivers/comedi/comedi_fops.c:1568 comedi_unlocked_ioctl+0x1c6b/0x1e00 drivers/comedi/comedi_fops.c:2253 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0x23c/0x400 fs/ioctl.c:893 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:893 x64_sys_call+0x1ebe/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: insn_rw_emulate_bits+0x52d/0x560 drivers/comedi/drivers.c:629 parse_insn+0x14b0/0x1780 drivers/comedi/comedi_fops.c:-1 do_insnlist_ioctl+0x412/0x890 drivers/comedi/comedi_fops.c:1568 comedi_unlocked_ioctl+0x1c6b/0x1e00 drivers/comedi/comedi_fops.c:2253 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0x23c/0x400 fs/ioctl.c:893 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:893 x64_sys_call+0x1ebe/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4154 [inline] slab_alloc_node mm/slub.c:4197 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_noprof+0x95f/0x1310 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] kmalloc_array_noprof include/linux/slab.h:948 [inline] do_insnlist_ioctl+0x1b2/0x890 drivers/comedi/comedi_fops.c:1551 comedi_unlocked_ioctl+0x1c6b/0x1e00 drivers/comedi/comedi_fops.c:2253 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0x23c/0x400 fs/ioctl.c:893 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:893 x64_sys_call+0x1ebe/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 6184 Comm: syz.4.49 Not tainted 6.16.0-rc4-syzkaller-00308-ga79a588fc176 #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 =====================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/07/05 15:03 | upstream | a79a588fc176 | 4f67c4ae | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kmsan-gce-root | KMSAN: uninit-value in dt2817_dio_insn_bits | ||
2025/07/05 15:03 | upstream | a79a588fc176 | 4f67c4ae | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kmsan-gce-root | KMSAN: uninit-value in dt2817_dio_insn_bits |