On Wed, Nov 22, 2023 at 12:17 PM Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx> wrote: > > On Tue, Nov 21, 2023 at 1:08 PM <andrey.konovalov@xxxxxxxxx> wrote: > > > > From: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > > > > Evict alloc/free stack traces from the stack depot for Generic KASAN > > once they are evicted from the quaratine. > > > > For auxiliary stack traces, evict the oldest stack trace once a new one > > is saved (KASAN only keeps references to the last two). > > > > Also evict all saved stack traces on krealloc. > > > > To avoid double-evicting and mis-evicting stack traces (in case KASAN's > > metadata was corrupted), reset KASAN's per-object metadata that stores > > stack depot handles when the object is initialized and when it's evicted > > from the quarantine. > > > > Note that stack_depot_put is no-op if the handle is 0. > > > > Reviewed-by: Marco Elver <elver@xxxxxxxxxx> > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > > I observed boot hangs on a few SLUB configurations. > > Having other users of stackdepot might be the cause. After passing > 'slub_debug=-' which disables SLUB debugging, it boots fine. Looks like I forgot to Cc regzbot. If you need more information, please let me know. #regzbot introduced: f0ff84b7c3a Thanks, Hyeonggon > compiler version: gcc-11 > config: https://download.kerneltesting.org/builds/2023-11-21-f121f2/.config > bisect log: https://download.kerneltesting.org/builds/2023-11-21-f121f2/bisect.log.txt > > [dmesg] > (gdb) lx-dmesg > [ 0.000000] Linux version 6.7.0-rc1-00136-g0e8b630f3053 > (hyeyoo@localhost.localdomain) (gcc (GCC) 11.3.1 20221121 (R3[ > 0.000000] Command line: console=ttyS0 root=/dev/sda1 nokaslr > [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted > 6.7.0-rc1-00136-g0e8b630f3053 #22 > [ 0.000000] RIP: 0010:setup_arch+0x500/0x2250 > [ 0.000000] Code: c6 09 08 00 48 89 c5 48 85 c0 0f 84 58 13 00 00 > 48 c1 e8 03 48 83 05 be 97 66 00 01 80 3c 18 00 0f3[ 0.000000] RSP: > 0000:ffffffff86007e00 EFLAGS: 00010046 ORIG_RAX: 0000000000000009 > [ 0.000000] RAX: 1fffffffffe40088 RBX: dffffc0000000000 RCX: 1ffffffff11ed630 > [ 0.000000] RDX: 0000000000000000 RSI: feec4698e8103000 RDI: ffffffff88f6b180 > [ 0.000000] RBP: ffffffffff200444 R08: 8000000000000163 R09: 1ffffffff11ed628 > [ 0.000000] R10: ffffffff88f7a150 R11: 0000000000000000 R12: 0000000000000010 > [ 0.000000] R13: ffffffffff200450 R14: feec4698e8102444 R15: feec4698e8102444 > [ 0.000000] FS: 0000000000000000(0000) GS:ffffffff88d5b000(0000) > knlGS:0000000000000000 > [ 0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 0.000000] CR2: ffffffffff200444 CR3: 0000000008f0e000 CR4: 00000000000000b0 > [ 0.000000] Call Trace: > [ 0.000000] <TASK> > [ 0.000000] ? show_regs+0x87/0xa0 > [ 0.000000] ? early_fixup_exception+0x130/0x310 > [ 0.000000] ? do_early_exception+0x23/0x90 > [ 0.000000] ? early_idt_handler_common+0x2f/0x40 > [ 0.000000] ? setup_arch+0x500/0x2250 > [ 0.000000] ? __pfx_setup_arch+0x10/0x10 > [ 0.000000] ? vprintk_default+0x20/0x30 > [ 0.000000] ? vprintk+0x4c/0x80 > [ 0.000000] ? _printk+0xba/0xf0 > [ 0.000000] ? __pfx__printk+0x10/0x10 > [ 0.000000] ? init_cgroup_root+0x10f/0x2f0 > --Type <RET> for more, q to quit, c to continue without paging-- > [ 0.000000] ? cgroup_init_early+0x1e4/0x440 > [ 0.000000] ? start_kernel+0xae/0x790 > [ 0.000000] ? x86_64_start_reservations+0x28/0x50 > [ 0.000000] ? x86_64_start_kernel+0x10e/0x130 > [ 0.000000] ? secondary_startup_64_no_verify+0x178/0x17b > [ 0.000000] </TASK>
