Messages in this thread | | | Date | Fri, 30 Aug 2019 12:28:08 -0700 | Subject | memory leak in hci_inquiry_cache_update | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: 6525771f Merge tag 'arc-5.3-rc7' of git://git.kernel.org/p.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11ce405c600000 kernel config: https://syzkaller.appspot.com/x/.config?x=e6131eafb9408877 dashboard link: https://syzkaller.appspot.com/bug?extid=82e5dfb66f1a36c0ffbb compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ef5ade600000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+82e5dfb66f1a36c0ffbb@syzkaller.appspotmail.com
2019/08/30 10:10:13 executed programs: 1 2019/08/30 10:10:24 executed programs: 2 2019/08/30 10:10:39 executed programs: 3 2019/08/30 10:10:49 executed programs: 4 BUG: memory leak unreferenced object 0xffff8881227b8ac0 (size 64): comm "kworker/u5:0", pid 1543, jiffies 4294990660 (age 28.050s) hex dump (first 32 bytes): 70 2a b0 2a 81 88 ff ff c0 7e c6 1a 81 88 ff ff p*.*.....~...... 80 2a b0 2a 81 88 ff ff d0 7e c6 1a 81 88 ff ff .*.*.....~...... backtrace: [<0000000003c40121>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<0000000003c40121>] slab_post_alloc_hook mm/slab.h:522 [inline] [<0000000003c40121>] slab_alloc mm/slab.c:3319 [inline] [<0000000003c40121>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548 [<00000000bdd76485>] kmalloc include/linux/slab.h:552 [inline] [<00000000bdd76485>] kzalloc include/linux/slab.h:748 [inline] [<00000000bdd76485>] hci_inquiry_cache_update+0x138/0x2b0 net/bluetooth/hci_core.c:1183 [<000000000fa97823>] hci_inquiry_result_with_rssi_evt net/bluetooth/hci_event.c:4079 [inline] [<000000000fa97823>] hci_event_packet+0x1224/0x3453 net/bluetooth/hci_event.c:5952 [<0000000021923028>] hci_rx_work+0x1b6/0x2f0 net/bluetooth/hci_core.c:4462 [<00000000eb63bebf>] process_one_work+0x210/0x490 kernel/workqueue.c:2269 [<00000000873e1703>] worker_thread+0x56/0x4c0 kernel/workqueue.c:2415 [<00000000a3c26b57>] kthread+0x13e/0x160 kernel/kthread.c:255 [<00000000c66acc55>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
BUG: memory leak unreferenced object 0xffff88811ac67ec0 (size 64): comm "kworker/u5:0", pid 1543, jiffies 4294990660 (age 28.050s) hex dump (first 32 bytes): c0 8a 7b 22 81 88 ff ff 80 7e c6 1a 81 88 ff ff ..{".....~...... d0 8a 7b 22 81 88 ff ff 90 7e c6 1a 81 88 ff ff ..{".....~...... backtrace: [<0000000003c40121>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<0000000003c40121>] slab_post_alloc_hook mm/slab.h:522 [inline] [<0000000003c40121>] slab_alloc mm/slab.c:3319 [inline] [<0000000003c40121>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548 [<00000000bdd76485>] kmalloc include/linux/slab.h:552 [inline] [<00000000bdd76485>] kzalloc include/linux/slab.h:748 [inline] [<00000000bdd76485>] hci_inquiry_cache_update+0x138/0x2b0 net/bluetooth/hci_core.c:1183 [<000000000fa97823>] hci_inquiry_result_with_rssi_evt net/bluetooth/hci_event.c:4079 [inline] [<000000000fa97823>] hci_event_packet+0x1224/0x3453 net/bluetooth/hci_event.c:5952 [<0000000021923028>] hci_rx_work+0x1b6/0x2f0 net/bluetooth/hci_core.c:4462 [<00000000eb63bebf>] process_one_work+0x210/0x490 kernel/workqueue.c:2269 [<00000000873e1703>] worker_thread+0x56/0x4c0 kernel/workqueue.c:2415 [<00000000a3c26b57>] kthread+0x13e/0x160 kernel/kthread.c:255 [<00000000c66acc55>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
BUG: memory leak unreferenced object 0xffff88811ac67e80 (size 64): comm "kworker/u5:0", pid 1543, jiffies 4294990660 (age 28.050s) hex dump (first 32 bytes): c0 7e c6 1a 81 88 ff ff 40 7e c6 1a 81 88 ff ff .~......@~...... d0 7e c6 1a 81 88 ff ff 50 7e c6 1a 81 88 ff ff .~......P~...... backtrace: [<0000000003c40121>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<0000000003c40121>] slab_post_alloc_hook mm/slab.h:522 [inline] [<0000000003c40121>] slab_alloc mm/slab.c:3319 [inline] [<0000000003c40121>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548 [<00000000bdd76485>] kmalloc include/linux/slab.h:552 [inline] [<00000000bdd76485>] kzalloc include/linux/slab.h:748 [inline] [<00000000bdd76485>] hci_inquiry_cache_update+0x138/0x2b0 net/bluetooth/hci_core.c:1183 [<000000000fa97823>] hci_inquiry_result_with_rssi_evt net/bluetooth/hci_event.c:4079 [inline] [<000000000fa97823>] hci_event_packet+0x1224/0x3453 net/bluetooth/hci_event.c:5952 [<0000000021923028>] hci_rx_work+0x1b6/0x2f0 net/bluetooth/hci_core.c:4462 [<00000000eb63bebf>] process_one_work+0x210/0x490 kernel/workqueue.c:2269 [<00000000873e1703>] worker_thread+0x56/0x4c0 kernel/workqueue.c:2415 [<00000000a3c26b57>] kthread+0x13e/0x160 kernel/kthread.c:255 [<00000000c66acc55>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
BUG: memory leak unreferenced object 0xffff88811ac67e40 (size 64): comm "kworker/u5:0", pid 1543, jiffies 4294990660 (age 28.050s) hex dump (first 32 bytes): 80 7e c6 1a 81 88 ff ff 00 7e c6 1a 81 88 ff ff .~.......~...... 90 7e c6 1a 81 88 ff ff 10 7e c6 1a 81 88 ff ff .~.......~...... backtrace: [<0000000003c40121>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<0000000003c40121>] slab_post_alloc_hook mm/slab.h:522 [inline] [<0000000003c40121>] slab_alloc mm/slab.c:3319 [inline] [<0000000003c40121>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548 [<00000000bdd76485>] kmalloc include/linux/slab.h:552 [inline] [<00000000bdd76485>] kzalloc include/linux/slab.h:748 [inline] [<00000000bdd76485>] hci_inquiry_cache_update+0x138/0x2b0 net/bluetooth/hci_core.c:1183 [<000000000fa97823>] hci_inquiry_result_with_rssi_evt net/bluetooth/hci_event.c:4079 [inline] [<000000000fa97823>] hci_event_packet+0x1224/0x3453 net/bluetooth/hci_event.c:5952 [<0000000021923028>] hci_rx_work+0x1b6/0x2f0 net/bluetooth/hci_core.c:4462 [<00000000eb63bebf>] process_one_work+0x210/0x490 kernel/workqueue.c:2269 [<00000000873e1703>] worker_thread+0x56/0x4c0 kernel/workqueue.c:2415 [<00000000a3c26b57>] kthread+0x13e/0x160 kernel/kthread.c:255 [<00000000c66acc55>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
BUG: memory leak unreferenced object 0xffff88811ac67e00 (size 64): comm "kworker/u5:0", pid 1543, jiffies 4294990660 (age 28.050s) hex dump (first 32 bytes): 40 7e c6 1a 81 88 ff ff c0 7d c6 1a 81 88 ff ff @~.......}...... 50 7e c6 1a 81 88 ff ff d0 7d c6 1a 81 88 ff ff P~.......}...... backtrace: [<0000000003c40121>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<0000000003c40121>] slab_post_alloc_hook mm/slab.h:522 [inline] [<0000000003c40121>] slab_alloc mm/slab.c:3319 [inline] [<0000000003c40121>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548 [<00000000bdd76485>] kmalloc include/linux/slab.h:552 [inline] [<00000000bdd76485>] kzalloc include/linux/slab.h:748 [inline] [<00000000bdd76485>] hci_inquiry_cache_update+0x138/0x2b0 net/bluetooth/hci_core.c:1183 [<000000000fa97823>] hci_inquiry_result_with_rssi_evt net/bluetooth/hci_event.c:4079 [inline] [<000000000fa97823>] hci_event_packet+0x1224/0x3453 net/bluetooth/hci_event.c:5952 [<0000000021923028>] hci_rx_work+0x1b6/0x2f0 net/bluetooth/hci_core.c:4462 [<00000000eb63bebf>] process_one_work+0x210/0x490 kernel/workqueue.c:2269 [<00000000873e1703>] worker_thread+0x56/0x4c0 kernel/workqueue.c:2415 [<00000000a3c26b57>] kthread+0x13e/0x160 kernel/kthread.c:255 [<00000000c66acc55>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
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