* Re: WARNING in untrack_pfn [not found] <000000000000f70a0e0571ad8ffb@google.com> @ 2019-04-12 11:42 ` syzbot 2019-04-12 13:01 ` Pavel Machek 2019-08-13 10:56 ` syzbot 1 sibling, 1 reply; 6+ messages in thread From: syzbot @ 2019-04-12 11:42 UTC (permalink / raw) To: Julia.Lawall, bp, dan.j.williams, dave.hansen, dave.jiang, haozhong.zhang, hpa, jacek.anaszewski, julia.lawall, linux-kernel, linux-leds, luto, mingo, pavel, pbonzini, peterz, rkrcmar, rpurdie, syzkaller-bugs, tglx, x86 syzbot has bisected this bug to: commit c68729119f4d2993bec3c9cb999ad76de5aeddba Author: Julia Lawall <Julia.Lawall@lip6.fr> Date: Sat Jul 15 09:58:19 2017 +0000 leds: tlc591xx: add missing of_node_put bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12cda0f3200000 start commit: 23203e3f Merge branch 'akpm' (patches from Andrew) git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=11cda0f3200000 console output: https://syzkaller.appspot.com/x/log.txt?x=16cda0f3200000 kernel config: https://syzkaller.appspot.com/x/.config?x=861a3573f4e78ba1 dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17836d15400000 Reported-by: syzbot+e1a4f80c370d2381e49f@syzkaller.appspotmail.com Fixes: c68729119f4d ("leds: tlc591xx: add missing of_node_put") For information about bisection process see: https://goo.gl/tpsmEJ#bisection ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: WARNING in untrack_pfn 2019-04-12 11:42 ` WARNING in untrack_pfn syzbot @ 2019-04-12 13:01 ` Pavel Machek 2019-04-12 13:21 ` Julia Lawall 0 siblings, 1 reply; 6+ messages in thread From: Pavel Machek @ 2019-04-12 13:01 UTC (permalink / raw) To: syzbot Cc: Julia.Lawall, bp, dan.j.williams, dave.hansen, dave.jiang, haozhong.zhang, hpa, jacek.anaszewski, linux-kernel, linux-leds, luto, mingo, pbonzini, peterz, rkrcmar, rpurdie, syzkaller-bugs, tglx, x86 [-- Attachment #1: Type: text/plain, Size: 1369 bytes --] On Fri 2019-04-12 04:42:01, syzbot wrote: > syzbot has bisected this bug to: > > commit c68729119f4d2993bec3c9cb999ad76de5aeddba > Author: Julia Lawall <Julia.Lawall@lip6.fr> > Date: Sat Jul 15 09:58:19 2017 +0000 > > leds: tlc591xx: add missing of_node_put > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12cda0f3200000 > start commit: 23203e3f Merge branch 'akpm' (patches from Andrew) > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=11cda0f3200000 > console output: https://syzkaller.appspot.com/x/log.txt?x=16cda0f3200000 > kernel config: https://syzkaller.appspot.com/x/.config?x=861a3573f4e78ba1 > dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17836d15400000 > > Reported-by: syzbot+e1a4f80c370d2381e49f@syzkaller.appspotmail.com > Fixes: c68729119f4d ("leds: tlc591xx: add missing of_node_put") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Can you revert c68729119f4d2993bec3c9cb999ad76de5aeddba on master and see if it fixes the problem? Because this is hard to believe... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 181 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: WARNING in untrack_pfn 2019-04-12 13:01 ` Pavel Machek @ 2019-04-12 13:21 ` Julia Lawall 2019-05-08 12:37 ` Dmitry Vyukov 0 siblings, 1 reply; 6+ messages in thread From: Julia Lawall @ 2019-04-12 13:21 UTC (permalink / raw) To: Pavel Machek Cc: syzbot, Julia.Lawall, bp, dan.j.williams, dave.hansen, dave.jiang, haozhong.zhang, hpa, jacek.anaszewski, linux-kernel, linux-leds, luto, mingo, pbonzini, peterz, rkrcmar, rpurdie, syzkaller-bugs, tglx, x86 On Fri, 12 Apr 2019, Pavel Machek wrote: > On Fri 2019-04-12 04:42:01, syzbot wrote: > > syzbot has bisected this bug to: > > > > commit c68729119f4d2993bec3c9cb999ad76de5aeddba > > Author: Julia Lawall <Julia.Lawall@lip6.fr> > > Date: Sat Jul 15 09:58:19 2017 +0000 > > > > leds: tlc591xx: add missing of_node_put > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12cda0f3200000 > > start commit: 23203e3f Merge branch 'akpm' (patches from Andrew) > > git tree: upstream > > final crash: https://syzkaller.appspot.com/x/report.txt?x=11cda0f3200000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=16cda0f3200000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=861a3573f4e78ba1 > > dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17836d15400000 > > > > Reported-by: syzbot+e1a4f80c370d2381e49f@syzkaller.appspotmail.com > > Fixes: c68729119f4d ("leds: tlc591xx: add missing of_node_put") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > Can you revert c68729119f4d2993bec3c9cb999ad76de5aeddba on master and > see if it fixes the problem? Because this is hard to believe... Likewise, it seems hard to believe that the change is a problem. But could the problem be elsewhere and triggered by this code? julia > > Pavel > > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: WARNING in untrack_pfn 2019-04-12 13:21 ` Julia Lawall @ 2019-05-08 12:37 ` Dmitry Vyukov 0 siblings, 0 replies; 6+ messages in thread From: Dmitry Vyukov @ 2019-05-08 12:37 UTC (permalink / raw) To: Julia Lawall Cc: Pavel Machek, syzbot, Borislav Petkov, Dan Williams, Dave Hansen, Dave Jiang, Haozhong Zhang, H. Peter Anvin, jacek.anaszewski, LKML, linux-leds, Andy Lutomirski, Ingo Molnar, Paolo Bonzini, Peter Zijlstra, Radim Krčmář, rpurdie, syzkaller-bugs, Thomas Gleixner, the arch/x86 maintainers From: Julia Lawall Date: Fri, Apr 12, 2019 at 3:21 PM > On Fri, 12 Apr 2019, Pavel Machek wrote: > > > On Fri 2019-04-12 04:42:01, syzbot wrote: > > > syzbot has bisected this bug to: > > > > > > commit c68729119f4d2993bec3c9cb999ad76de5aeddba > > > Author: Julia Lawall <Julia.Lawall@lip6.fr> > > > Date: Sat Jul 15 09:58:19 2017 +0000 > > > > > > leds: tlc591xx: add missing of_node_put > > > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12cda0f3200000 > > > start commit: 23203e3f Merge branch 'akpm' (patches from Andrew) > > > git tree: upstream > > > final crash: https://syzkaller.appspot.com/x/report.txt?x=11cda0f3200000 > > > console output: https://syzkaller.appspot.com/x/log.txt?x=16cda0f3200000 > > > kernel config: https://syzkaller.appspot.com/x/.config?x=861a3573f4e78ba1 > > > dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f > > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17836d15400000 > > > > > > Reported-by: syzbot+e1a4f80c370d2381e49f@syzkaller.appspotmail.com > > > Fixes: c68729119f4d ("leds: tlc591xx: add missing of_node_put") > > > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > > > Can you revert c68729119f4d2993bec3c9cb999ad76de5aeddba on master and > > see if it fixes the problem? Because this is hard to believe... > > Likewise, it seems hard to believe that the change is a problem. But > could the problem be elsewhere and triggered by this code? Looking at the bisection log, this looks like a hard to reproduce, flaky crash. Most likely the crash did not fire on one of the commits and that diverted bisection in the wrong direction. ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: WARNING in untrack_pfn [not found] <000000000000f70a0e0571ad8ffb@google.com> 2019-04-12 11:42 ` WARNING in untrack_pfn syzbot @ 2019-08-13 10:56 ` syzbot 2019-08-13 11:31 ` Pavel Machek 1 sibling, 1 reply; 6+ messages in thread From: syzbot @ 2019-08-13 10:56 UTC (permalink / raw) To: Julia.Lawall, bp, dan.j.williams, dave.hansen, dave.jiang, dvyukov, haozhong.zhang, hpa, jacek.anaszewski, julia.lawall, linux-kernel, linux-leds, luto, mingo, pavel, pbonzini, peterz, rkrcmar, rpurdie, syzkaller-bugs, tglx, x86 syzbot has found a reproducer for the following crash on: HEAD commit: d45331b0 Linux 5.3-rc4 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16130d4a600000 kernel config: https://syzkaller.appspot.com/x/.config?x=3d7eaed8496da4da dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f compiler: clang version 9.0.0 (/home/glider/llvm/clang 80fee25776c2fb61e74c1ecb1a523375c2500b69) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=131f8e0e600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e1a1ee600000 The bug was bisected to: commit c68729119f4d2993bec3c9cb999ad76de5aeddba Author: Julia Lawall <Julia.Lawall@lip6.fr> Date: Sat Jul 15 09:58:19 2017 +0000 leds: tlc591xx: add missing of_node_put bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12cda0f3200000 final crash: https://syzkaller.appspot.com/x/report.txt?x=11cda0f3200000 console output: https://syzkaller.appspot.com/x/log.txt?x=16cda0f3200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+e1a4f80c370d2381e49f@syzkaller.appspotmail.com Fixes: c68729119f4d ("leds: tlc591xx: add missing of_node_put") RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004432d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffffffffffff R08: 0000000000000000 R09: 00000000004aa942 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 00007ffc1519c410 R14: 0000000000000000 R15: 0000000000000000 WARNING: CPU: 1 PID: 9558 at arch/x86/mm/pat.c:1065 untrack_pfn+0x222/0x370 arch/x86/mm/pat.c:1064 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9558 Comm: syz-executor347 Not tainted 5.3.0-rc4 #73 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+0x1d8/0x2f8 lib/dump_stack.c:113 panic+0x25c/0x799 kernel/panic.c:219 __warn+0x22f/0x230 kernel/panic.c:576 report_bug+0x190/0x290 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0xd7/0x440 arch/x86/kernel/traps.c:272 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:untrack_pfn+0x222/0x370 arch/x86/mm/pat.c:1064 Code: 4d b0 4c 8d 45 b8 4c 89 ff 31 d2 e8 98 1d 69 00 41 89 c6 31 ff 89 c6 e8 8c 59 3d 00 45 85 f6 0f 84 af 00 00 00 e8 de 55 3d 00 <0f> 0b eb 63 e8 d5 55 3d 00 48 b8 00 00 00 00 00 fc ff df 48 89 c1 RSP: 0018:ffff88808dabf9e0 EFLAGS: 00010293 RAX: ffffffff81362ea2 RBX: 1ffff11011b57f3f RCX: ffff8880959ae100 RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000000 RBP: ffff88808dabfa40 R08: ffffffff81362e94 R09: ffffed1012bd7598 R10: ffffed1012bd7598 R11: 0000000000000000 R12: 1ffff11012e3dc29 R13: 0000000000000000 R14: 00000000ffffffea R15: ffff8880971ee148 unmap_single_vma+0x1f4/0x2e0 mm/memory.c:1256 unmap_vmas+0x1b4/0x2b0 mm/memory.c:1309 exit_mmap+0x27b/0x530 mm/mmap.c:3145 __mmput+0x120/0x3a0 kernel/fork.c:1064 mmput kernel/fork.c:1085 [inline] dup_mm+0x31b/0x340 kernel/fork.c:1362 copy_mm kernel/fork.c:1402 [inline] copy_process+0x2563/0x5ac0 kernel/fork.c:2017 _do_fork+0x13f/0x5b0 kernel/fork.c:2369 __do_sys_clone kernel/fork.c:2524 [inline] __se_sys_clone kernel/fork.c:2505 [inline] __x64_sys_clone+0x1ec/0x230 kernel/fork.c:2505 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4432d9 Code: e8 1c 0d 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc1519c3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004432d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffffffffffff R08: 0000000000000000 R09: 00000000004aa942 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 00007ffc1519c410 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: WARNING in untrack_pfn 2019-08-13 10:56 ` syzbot @ 2019-08-13 11:31 ` Pavel Machek 0 siblings, 0 replies; 6+ messages in thread From: Pavel Machek @ 2019-08-13 11:31 UTC (permalink / raw) To: syzbot Cc: Julia.Lawall, bp, dan.j.williams, dave.hansen, dave.jiang, dvyukov, haozhong.zhang, hpa, jacek.anaszewski, linux-kernel, linux-leds, luto, mingo, pbonzini, peterz, rkrcmar, rpurdie, syzkaller-bugs, tglx, x86 [-- Attachment #1: Type: text/plain, Size: 1271 bytes --] On Tue 2019-08-13 03:56:06, syzbot wrote: > syzbot has found a reproducer for the following crash on: Unsigned emails are ugly. Could the "From: " be modified to include name of responsible person? > HEAD commit: d45331b0 Linux 5.3-rc4 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=16130d4a600000 > kernel config: https://syzkaller.appspot.com/x/.config?x=3d7eaed8496da4da > dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f > compiler: clang version 9.0.0 (/home/glider/llvm/clang > 80fee25776c2fb61e74c1ecb1a523375c2500b69) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=131f8e0e600000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e1a1ee600000 > > The bug was bisected to: > > commit c68729119f4d2993bec3c9cb999ad76de5aeddba > Author: Julia Lawall <Julia.Lawall@lip6.fr> > Date: Sat Jul 15 09:58:19 2017 +0000 > > leds: tlc591xx: add missing of_node_put And this looks like mistake. I don't think this commit is causing the crash. Can you somehow verify? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 181 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
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2019-04-12 11:42 ` WARNING in untrack_pfn syzbot
2019-04-12 13:01 ` Pavel Machek
2019-04-12 13:21 ` Julia Lawall
2019-05-08 12:37 ` Dmitry Vyukov
2019-08-13 10:56 ` syzbot
2019-08-13 11:31 ` Pavel Machek
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