New: Observed data-race in _find_next_bit+0x42/0xf0
https://bugzilla.kernel.org/show_bug.cgi?id=220760
Bug ID: 220760
Summary: Observed data-race in _find_next_bit+0x42/0xf0
Product: File System
Version: 2.5
Hardware: AMD
OS: Linux
Status: NEW
Severity: high
Priority: P3
Component: ext4
Assignee: [email protected]
Reporter: [email protected]
Regression: NoCreated attachment 308913
--> https://bugzilla.kernel.org/attachment.cgi?id=308913&action=edit_find_next_bit+0x42/0xf0
Hello Team,
i have build linux kernel 6.17.7 by taking code from kernel.org and i have enabled CONFIG_KCSAN in kernel config file and installed the kernel. After the initial boot, i saw some concurrency issues in dmesg kernel ring buffer.
Few are related to ACPI and few are related to timer subsystem.
ref dmesg log:
[ 356.704237] BUG: KCSAN: data-race in _find_next_bit+0x42/0xf0
[ 356.704264] race at unknown origin, with read to 0xffff88a9c0004230 of 8 bytes by interrupt on cpu 0: [ 356.704279] _find_next_bit+0x42/0xf0 [ 356.704297] _nohz_idle_balance.isra.0+0x219/0x3a0 [ 356.704317] sched_balance_softirq+0x73/0x90 [ 356.704335] handle_softirqs+0xd8/0x310 [ 356.704358] __irq_exit_rcu+0x11a/0x140 [ 356.704377] irq_exit_rcu+0xe/0x20 [ 356.704396] sysvec_call_function_single+0x96/0xb0 [ 356.704421] asm_sysvec_call_function_single+0x1b/0x20 [ 356.704440] pv_native_safe_halt+0xb/0x10 [ 356.704454] arch_cpu_idle+0x9/0x10 [ 356.704471] default_idle_call+0x30/0x110 [ 356.704489] do_idle+0x203/0x240 [ 356.704505] cpu_startup_entry+0x2c/0x30 [ 356.704520] rest_init+0x121/0x140 [ 356.704536] start_kernel+0x9ed/0xe60 [ 356.704559] x86_64_start_reservations+0x18/0x30 [ 356.704579] x86_64_start_kernel+0xfe/0x150 [ 356.704596] common_startup_64+0x13e/0x141
[ 356.704627] value changed: 0x000000009ffdfbfd -> 0x000000009ffdebfd
[ 356.704645] Reported by Kernel Concurrency Sanitizer on: [ 356.704658] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.17.7 #4 PREEMPT(voluntary) [ 356.704678] Hardware name: VMware, Inc. VMware20,1/440BX Desktop Reference Platform, BIOS VMW201.00V.23553139.B64.2403260940 03/26/2024 [ 356.704690] ================================================================== [ 356.705780] scsi host28: ahci [ 356.707193] scsi host29: ahci [ 356.708567] scsi host30: ahci [ 356.709878] scsi host31: ahci [ 356.711303] scsi host32: ahci [ 356.712465] ata3: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210100 irq 34 lpm-pol 1 ext [ 356.712481] ata4: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210180 irq 34 lpm-pol 1 ext [ 356.712531] ata5: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210200 irq 34 lpm-pol 1 ext [ 356.712545] ata6: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210280 irq 34 lpm-pol 1 ext [ 356.712559] ata7: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210300 irq 34 lpm-pol 1 ext [ 356.712572] ata8: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210380 irq 34 lpm-pol 1 ext [ 356.712596] ata9: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210400 irq 34 lpm-pol 1 ext [ 356.712674] ata10: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210480 irq 34 lpm-pol 1 ext [ 356.712687] ata11: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210500 irq 34 lpm-pol 1 ext [ 356.712701] ata12: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210580 irq 34 lpm-pol 1 ext [ 356.712770] ata13: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210600 irq 34 lpm-pol 1 ext [ 356.712784] ata14: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210680 irq 34 lpm-pol 1 ext [ 356.712798] ata15: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210700 irq 34 lpm-pol 1 ext [ 356.712812] ata16: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210780 irq 34 lpm-pol 1 ext [ 356.712826] ata17: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210800 irq 34 lpm-pol 1 ext [ 356.712840] ata18: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210880 irq 34 lpm-pol 1 ext [ 356.712914] ata19: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210900 irq 34 lpm-pol 1 ext [ 356.712928] ata20: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210980 irq 34 lpm-pol 1 ext [ 356.712942] ata21: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210a00 irq 34 lpm-pol 1 ext [ 356.712955] ata22: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210a80 irq 34 lpm-pol 1 ext [ 356.712968] ata23: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210b00 irq 34 lpm-pol 1 ext [ 356.713031] ata24: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210b80 irq 34 lpm-pol 1 ext [ 356.713044] ata25: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210c00 irq 34 lpm-pol 1 ext [ 356.713057] ata26: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210c80 irq 34 lpm-pol 1 ext [ 356.713072] ata27: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210d00 irq 34 lpm-pol 1 ext [ 356.713125] ata28: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210d80 irq 34 lpm-pol 1 ext [ 356.713138] ata29: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210e00 irq 34 lpm-pol 1 ext [ 356.713164] ata30: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210e80 irq 34 lpm-pol 1 ext [ 356.713240] ata31: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210f00 irq 34 lpm-pol 1 ext [ 356.713253] ata32: SATA max UDMA/133 abar m4096@0xfe210000 port 0xfe210f80 irq 34 lpm-pol 1 ext [ 356.738288] usbcore: registered new interface driver usbhid [ 356.738300] usbhid: USB HID core driver [ 357.022742] ata27: SATA link down (SStatus 0 SControl 300) [ 357.022941] ata25: SATA link down (SStatus 0 SControl 300) [ 357.023093] ata22: SATA link down (SStatus 0 SControl 300) [ 357.023241] ata31: SATA link down (SStatus 0 SControl 300) [ 357.023373] ata13: SATA link down (SStatus 0 SControl 300) [ 357.023490] ata24: SATA link down (SStatus 0 SControl 300) [ 357.023618] ata20: SATA link down (SStatus 0 SControl 300) [ 357.023763] ata7: SATA link down (SStatus 0 SControl 300) [ 357.023994] ata18: SATA link down (SStatus 0 SControl 300) [ 357.024218] ata32: SATA link down (SStatus 0 SControl 300) [ 357.024352] ata19: SATA link down (SStatus 0 SControl 300) [ 357.024499] ata9: SATA link down (SStatus 0 SControl 300) [ 357.024712] ata6: SATA link down (SStatus 0 SControl 300) [ 357.024901] ata26: SATA link down (SStatus 0 SControl 300) [ 357.025010] ata12: SATA link down (SStatus 0 SControl 300) [ 357.025116] ata30: SATA link down (SStatus 0 SControl 300) [ 357.025308] ata17: SATA link down (SStatus 0 SControl 300) [ 357.025426] ata28: SATA link down (SStatus 0 SControl 300) [ 357.025544] ata4: SATA link down (SStatus 0 SControl 300) [ 357.025630] ata23: SATA link down (SStatus 0 SControl 300) [ 357.025760] ata3: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ 357.025908] ata15: SATA link down (SStatus 0 SControl 300) [ 357.026035] ata16: SATA link down (SStatus 0 SControl 300) [ 357.026210] ata29: SATA link down (SStatus 0 SControl 300) [ 357.026322] ata21: SATA link down (SStatus 0 SControl 300) [ 357.026432] ata10: SATA link down (SStatus 0 SControl 300) [ 357.026631] ata5: SATA link down (SStatus 0 SControl 300) [ 357.026733] ata11: SATA link down (SStatus 0 SControl 300) [ 357.026848] ata8: SATA link down (SStatus 0 SControl 300) [ 357.027037] ata14: SATA link down (SStatus 0 SControl 300) [ 357.027222] ata3.00: ATAPI: VMware Virtual SATA CDRW Drive, 00000001, max UDMA/33 [ 357.027523] ata3.00: configured for UDMA/33 [ 357.028728] scsi 3:0:0:0: CD-ROM NECVMWar VMware SATA CD00 1.00 PQ: 0 ANSI: 5 [ 357.030610] sr 3:0:0:0: [sr0] scsi3-mmc drive: 1x/1x writer dvd-ram cd/rw xa/form2 cdda tray [ 357.030693] cdrom: Uniform CD-ROM driver Revision: 3.20 [ 357.071982] sr 3:0:0:0: Attached scsi CD-ROM sr0 [ 357.072960] sr 3:0:0:0: Attached scsi generic sg1 type 5 [ 357.098035] input: VMware VMware Virtual USB Mouse as /devices/pci0000:02/0000:02:01.0/usb1/1-1/1-1:1.0/0003:0E0F:0003.0001/input/input5 [ 357.099472] hid-generic 0003:0E0F:0003.0001: input,hidraw0: USB HID v1.10 Mouse [VMware VMware Virtual USB Mouse] on usb-0000:02:01.0-1/input0 [ 357.398735] fbcon: Taking over console [ 357.402271] Console: switching to colour frame buffer device 128x48 [ 357.549114] EXT4-fs (sda4): mounted filesystem 574a78d5-a611-492b-a2fd-0fd9308f950d ro with ordered data mode. Quota mode: none. [ 363.330092] systemd[1]: Inserted module 'autofs4' [ 363.381819] systemd[1]: systemd 249.11-0ubuntu3.16 running in system mode
(+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT +GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 -PWQUALITY -P11KIT -QRENCODE +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[ 363.382132] systemd[1]: Detected virtualization vmware. [ 363.382510] systemd[1]: Detected architecture x86-64.
Signature · 4 lines
You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.