Title | Replies (including bot) | Last reply |
---|---|---|
[PATCH] media: dvbdev: keep dvb device ref balanced in dvb generic release and open | 1 (1) | 2025/01/19 03:42 |
[syzbot] [media?] KASAN: slab-use-after-free Read in dvb_device_open | 5 (12) | 2025/01/19 03:30 |
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Title | Replies (including bot) | Last reply |
---|---|---|
[PATCH] media: dvbdev: keep dvb device ref balanced in dvb generic release and open | 1 (1) | 2025/01/19 03:42 |
[syzbot] [media?] KASAN: slab-use-after-free Read in dvb_device_open | 5 (12) | 2025/01/19 03:30 |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2025/02/02 13:20 | 14m | retest repro | upstream | report log | |
2025/01/19 03:07 | 22m | eadavis@qq.com | https://github.com/ea1davis/linux mdbc/syz | OK log | |
2025/01/19 01:37 | 14m | eadavis@qq.com | https://github.com/ea1davis/linux mdbc/syz | report log | |
2025/01/19 01:05 | 1h15m | hdanton@sina.com | patch | upstream | OK log |
2025/01/19 01:02 | 21m | eadavis@qq.com | https://github.com/ea1davis/linux mdbc/syz | OK log | |
2025/01/19 00:15 | 13m | hdanton@sina.com | patch | upstream | report log |
================================================================== BUG: KASAN: slab-use-after-free in dvb_device_open+0x36a/0x3b0 drivers/media/dvb-core/dvbdev.c:99 Read of size 8 at addr ffff8881476baa18 by task syz-executor353/9116 CPU: 1 UID: 0 PID: 9116 Comm: syz-executor353 Not tainted 6.13.0-rc7-syzkaller-00189-g595523945be0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 dvb_device_open+0x36a/0x3b0 drivers/media/dvb-core/dvbdev.c:99 chrdev_open+0x237/0x6a0 fs/char_dev.c:414 do_dentry_open+0xf59/0x1ea0 fs/open.c:945 vfs_open+0x82/0x3f0 fs/open.c:1075 do_open fs/namei.c:3828 [inline] path_openat+0x1e6a/0x2d60 fs/namei.c:3987 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1428 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbafad2db29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff3ae8be88 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbafad2db29 RDX: 0000000000000001 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 00000000000f4240 R08: 0000000000008000 R09: 0000000000008000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000015edd R13: 00007fff3ae8beac R14: 00007fff3ae8bec0 R15: 00007fff3ae8beb0 </TASK> Allocated by task 1: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] dvb_register_device+0x1e2/0x2380 drivers/media/dvb-core/dvbdev.c:475 dvb_register_frontend+0x5a7/0x880 drivers/media/dvb-core/dvb_frontend.c:3051 vidtv_bridge_dvb_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:430 [inline] vidtv_bridge_probe+0x45e/0xa90 drivers/media/test-drivers/vidtv/vidtv_bridge.c:502 platform_probe+0xff/0x1f0 drivers/base/platform.c:1404 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __driver_attach+0x283/0x580 drivers/base/dd.c:1216 bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:370 bus_add_driver+0x2e9/0x690 drivers/base/bus.c:675 driver_register+0x15c/0x4b0 drivers/base/driver.c:246 vidtv_bridge_init+0x45/0x80 drivers/media/test-drivers/vidtv/vidtv_bridge.c:592 do_one_initcall+0x128/0x630 init/main.c:1266 do_initcall_level init/main.c:1328 [inline] do_initcalls init/main.c:1344 [inline] do_basic_setup init/main.c:1363 [inline] kernel_init_freeable+0x58f/0x8b0 init/main.c:1577 kernel_init+0x1c/0x2b0 init/main.c:1466 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 9110: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4613 [inline] kfree+0x14f/0x4b0 mm/slub.c:4761 dvb_free_device drivers/media/dvb-core/dvbdev.c:619 [inline] kref_put include/linux/kref.h:65 [inline] dvb_device_put.part.0+0x60/0x90 drivers/media/dvb-core/dvbdev.c:632 dvb_device_put drivers/media/dvb-core/dvbdev.c:631 [inline] dvb_device_open+0x2a4/0x3b0 drivers/media/dvb-core/dvbdev.c:113 chrdev_open+0x237/0x6a0 fs/char_dev.c:414 do_dentry_open+0xf59/0x1ea0 fs/open.c:945 vfs_open+0x82/0x3f0 fs/open.c:1075 do_open fs/namei.c:3828 [inline] path_openat+0x1e6a/0x2d60 fs/namei.c:3987 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1428 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8881476baa00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 24 bytes inside of freed 256-byte region [ffff8881476baa00, ffff8881476bab00) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1476ba head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 057ff00000000040 ffff88801ac41b40 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 057ff00000000040 ffff88801ac41b40 dead000000000122 0000000000000000 head: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 057ff00000000001 ffffea00051dae81 ffffffffffffffff 0000000000000000 head: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 21808544918, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab mm/slub.c:2589 [inline] new_slab+0x2c9/0x410 mm/slub.c:2642 ___slab_alloc+0xce2/0x1650 mm/slub.c:3830 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] __kmalloc_cache_noprof+0xf6/0x420 mm/slub.c:4324 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] bus_add_driver+0x92/0x690 drivers/base/bus.c:659 driver_register+0x15c/0x4b0 drivers/base/driver.c:246 usb_register_driver+0x216/0x4d0 drivers/usb/core/driver.c:1078 do_one_initcall+0x128/0x630 init/main.c:1266 do_initcall_level init/main.c:1328 [inline] do_initcalls init/main.c:1344 [inline] do_basic_setup init/main.c:1363 [inline] kernel_init_freeable+0x58f/0x8b0 init/main.c:1577 kernel_init+0x1c/0x2b0 init/main.c:1466 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 page_owner free stack trace missing Memory state around the buggy address: ffff8881476ba900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881476ba980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8881476baa00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881476baa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881476bab00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/01/18 19:49 | upstream | 595523945be0 | f2cb035c | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | |
2025/02/15 03:22 | upstream | 04f41cbf03ec | 40a34ec9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/02/14 18:00 | upstream | 128c8f96eb86 | fe17639f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/19 13:16 | upstream | fda5e3f28400 | f2cb035c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/18 22:30 | upstream | 595523945be0 | f2cb035c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/18 18:37 | upstream | 595523945be0 | f2cb035c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/18 18:31 | upstream | 595523945be0 | f2cb035c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/18 11:45 | upstream | ad26fc09dabf | f2cb035c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/17 09:45 | upstream | 9bffa1ad25b8 | f9e07a6e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/15 23:34 | upstream | 619f0b6fad52 | 968edaf4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/11 22:52 | upstream | b62cef9a5c67 | 6dbc6a9b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2025/01/02 23:49 | upstream | 0bc21e701a6f | d3ccff63 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2024/12/26 23:39 | upstream | d6ef8b40d075 | d3ccff63 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2024/12/18 06:07 | upstream | 59dbb9d81adf | a0626d3a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open | ||
2024/12/16 14:18 | upstream | 78d4f34e2115 | eec85da6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-qemu-gce-upstream-auto | KASAN: slab-use-after-free Read in dvb_device_open |