KASAN: slab-out-of-bounds Read in read

Title	Replies (including bot)	Last reply
KASAN: slab-out-of-bounds Read in read_descriptors	0 (1)	2019/10/22 14:54

Title

Replies (including bot)

Last reply

KASAN: slab-out-of-bounds Read in read_descriptors

0 (1)

2019/10/22 14:54

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	KASAN: slab-out-of-bounds Read in read_descriptors origin:upstream	C		error	1	268d	312d	0/3	auto-obsoleted due to no activity on 2023/11/08 10:43
linux-5.15	KASAN: slab-out-of-bounds Read in read_descriptors origin:upstream missing-backport	C		error	2	222d	312d	0/3	upstream: reported C repro on 2023/06/17 08:07
upstream	KASAN: slab-out-of-bounds Read in read_descriptors (2) usb				1	1342d	1338d	15/26	fixed on 2020/10/10 01:52
upstream	KASAN: slab-out-of-bounds Read in read_descriptors (3) usb	C	error		7	282d	309d	23/26	fixed on 2023/10/12 12:48

================================================================== BUG: KASAN: slab-out-of-bounds in read_descriptors+0x256/0x270 drivers/usb/core/sysfs.c:903 Read of size 8 at addr ffff8881ce6e4350 by task udevd/9454 CPU: 1 PID: 9454 Comm: udevd Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 print_address_description.constprop.0+0x36/0x50 mm/kasan/report.c:374 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:506 kasan_report+0xe/0x20 mm/kasan/common.c:634 read_descriptors+0x256/0x270 drivers/usb/core/sysfs.c:903 sysfs_kf_bin_read+0x196/0x270 fs/sysfs/file.c:99 kernfs_file_direct_read fs/kernfs/file.c:213 [inline] kernfs_fop_read+0x2eb/0x560 fs/kernfs/file.c:253 __vfs_read+0x76/0x100 fs/read_write.c:425 vfs_read+0x1ea/0x430 fs/read_write.c:461 ksys_read+0x127/0x250 fs/read_write.c:587 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f10f2702310 Code: 73 01 c3 48 8b 0d 28 4b 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d e5 a2 2b 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 6e 8a 01 00 48 89 04 24 RSP: 002b:00007ffd6a810e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f10f2702310 RDX: 0000000000010011 RSI: 00007ffd6a810e80 RDI: 0000000000000005 RBP: 000000000174e640 R08: 000000000000000c R09: 75642f6d726f6674 R10: 2e6463685f796d6d R11: 0000000000000246 R12: 00007ffd6a821590 R13: 0000000001741250 R14: 0000000000000000 R15: 00000000017421c0 Allocated by task 22: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:510 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:483 kmalloc include/linux/slab.h:561 [inline] kzalloc include/linux/slab.h:690 [inline] usb_get_configuration+0x184/0x3050 drivers/usb/core/config.c:825 usb_enumerate_device drivers/usb/core/hub.c:2369 [inline] usb_new_device+0xd3/0x160 drivers/usb/core/hub.c:2505 hub_port_connect drivers/usb/core/hub.c:5183 [inline] hub_port_connect_change drivers/usb/core/hub.c:5323 [inline] port_event drivers/usb/core/hub.c:5469 [inline] hub_event+0x1dd0/0x37e0 drivers/usb/core/hub.c:5551 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Freed by task 2807: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] kasan_set_free_info mm/kasan/common.c:332 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:471 slab_free_hook mm/slub.c:1424 [inline] slab_free_freelist_hook mm/slub.c:1475 [inline] slab_free mm/slub.c:3018 [inline] kfree+0xe4/0x320 mm/slub.c:3967 usb_set_configuration+0xba8/0x1670 drivers/usb/core/message.c:1962 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0xae6/0x16f0 drivers/base/core.c:2201 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536 hub_port_connect drivers/usb/core/hub.c:5183 [inline] hub_port_connect_change drivers/usb/core/hub.c:5323 [inline] port_event drivers/usb/core/hub.c:5469 [inline] hub_event+0x1dd0/0x37e0 drivers/usb/core/hub.c:5551 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff8881ce6e4348 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes to the right of 8-byte region [ffff8881ce6e4348, ffff8881ce6e4350) The buggy address belongs to the page: page:ffffea000739b900 refcount:1 mapcount:0 mapping:ffff8881da003900 index:0x0 flags: 0x200000000000200(slab) raw: 0200000000000200 ffffea0007632e40 0000000a0000000a ffff8881da003900 raw: 0000000000000000 0000000000aa00aa 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881ce6e4200: fc fc fb fc fc fb fc fc fb fc fc fb fc fc fb fc ffff8881ce6e4280: fc fb fc fc fb fc fc fb fc fc fb fc fc fb fc fc >ffff8881ce6e4300: fb fc fc fb fc fc fb fc fc 00 fc fc fb fc fc fb ^ ffff8881ce6e4380: fc fc fb fc fc fb fc fc fb fc fc fb fc fc fb fc ffff8881ce6e4400: fc fb fc fc fb fc fc fb fc fc fb fc fc fb fc fc ==================================================================