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Revert? Thanks, Sasha > >> Hi, >> I am here to test unstable kernels. >> Yesterday at Fedora Rawhide arrived the new kernel >> 20240515git1b294a1f3561 and I spotter in kernel log new "red" message >> with follow stacktrace: >> [ 8.471610] nvme nvme1: pci function 0000:0e:00.0 >> [ 8.471616] nvme nvme0: pci function 0000:04:00.0 >> [ 8.492638] nvme nvme1: 32/0/0 default/read/poll queues >> [ 8.496190] nvme nvme0: 31/0/0 default/read/poll queues >> [ 8.507051] nvme0n1: p1 p2 p3 >> [ 8.522270] INFO: trying to register non-static key. >> [ 8.522273] The code is fine but needs lockdep annotation, or maybe >> [ 8.522274] you didn't initialize this object before use? >> [ 8.522275] turning off the locking correctness validator. >> [ 8.522276] CPU: 31 PID: 683 Comm: (udev-worker) Not tainted >> 6.10.0-0.rc0.20240515git1b294a1f3561.4.fc41.x86_64+debug #1 >> [ 8.522278] Hardware name: ASUS System Product Name/ROG STRIX >> B650E-I GAMING WIFI, BIOS 2611 04/07/2024 >> [ 8.522280] Call Trace: >> [ 8.522281] >> [ 8.522282] dump_stack_lvl+0x84/0xd0 >> [ 8.522287] register_lock_class+0xd84/0x1000 >> [ 8.522291] ? __pfx_register_lock_class+0x10/0x10 >> [ 8.522293] __lock_acquire+0x3d2/0x5c70 >> [ 8.522295] ? debug_object_free+0x298/0x550 >> [ 8.522297] ? __pfx_debug_object_free+0x10/0x10 >> [ 8.522299] ? __pfx_lock_release+0x10/0x10 >> [ 8.522301] ? __pfx___lock_acquire+0x10/0x10 >> [ 8.522302] ? hrtimer_try_to_cancel+0x22/0x460 >> [ 8.522305] lock_acquire+0x1ae/0x540 >> [ 8.522307] ? igc_ptp_clear_tx_tstamp+0x38/0x1b0 [igc] >> [ 8.522321] ? __pfx_lock_acquire+0x10/0x10 >> [ 8.522323] ? seqcount_lockdep_reader_access.constprop.0+0xa5/0xb0 >> [ 8.522325] ? lockdep_hardirqs_on+0x7c/0x100 >> [ 8.522326] ? seqcount_lockdep_reader_access.constprop.0+0xa5/0xb0 >> [ 8.522329] _raw_spin_lock_irqsave+0x51/0xa0 >> [ 8.522330] ? igc_ptp_clear_tx_tstamp+0x38/0x1b0 [igc] >> [ 8.522337] igc_ptp_clear_tx_tstamp+0x38/0x1b0 [igc] >> [ 8.522344] igc_ptp_set_timestamp_mode+0x3cc/0x700 [igc] >> [ 8.522350] ? igc_power_down_phy_copper+0xf1/0x140 [igc] >> [ 8.522358] igc_ptp_reset+0x3b/0x5e0 [igc] >> [ 8.530693] ? igc_set_eee_i225+0xfd/0x1e0 [igc] >> [ 8.530706] igc_reset+0x2d9/0x3d0 [igc] >> [ 8.531707] igc_probe+0x14ca/0x1e20 [igc] >> [ 8.531715] ? _raw_spin_unlock_irqrestore+0x4f/0x80 >> [ 8.531717] ? __pfx_igc_probe+0x10/0x10 [igc] >> [ 8.531723] local_pci_probe+0xdc/0x180 >> [ 8.531727] pci_device_probe+0x23c/0x810 >> [ 8.531729] ? kernfs_add_one+0x3ab/0x4a0 >> [ 8.534068] ? kernfs_new_node+0x13d/0x240 >> [ 8.534070] ? __pfx_pci_device_probe+0x10/0x10 >> [ 8.534072] ? kernfs_create_link+0x16e/0x240 >> [ 8.534074] ? kernfs_put+0x1c/0x40 >> [ 8.534076] ? sysfs_do_create_link_sd+0x8e/0x100 >> [ 8.534078] really_probe+0x1e0/0x8a0 >> [ 8.536433] __driver_probe_device+0x18c/0x370 >> [ 8.536436] driver_probe_device+0x4a/0x120 >> [ 8.536438] __driver_attach+0x194/0x4a0 >> [ 8.536439] ? __pfx___driver_attach+0x10/0x10 >> [ 8.536441] bus_for_each_dev+0x106/0x190 >> [ 8.536443] ? __pfx_bus_for_each_dev+0x10/0x10 >> [ 8.536445] bus_add_driver+0x2ff/0x530 >> [ 8.536448] driver_register+0x1a5/0x360 >> [ 8.536449] ? __pfx_igc_init_module+0x10/0x10 [igc] >> [ 8.536456] do_one_initcall+0xd6/0x460 >> [ 8.536459] ? __pfx_do_one_initcall+0x10/0x10 >> [ 8.536461] ? kasan_unpoison+0x44/0x70 >> [ 8.536464] do_init_module+0x296/0x7c0 >> [ 8.536466] load_module+0x567b/0x74f0 >> [ 8.536470] ? __pfx_load_module+0x10/0x10 >> [ 8.536473] ? __might_fault+0x9d/0x120 >> [ 8.536475] ? local_clock_noinstr+0xd/0x100 >> [ 8.536478] ? __pfx___might_resched+0x10/0x10 >> [ 8.536481] ? __do_sys_init_module+0x1ef/0x220 >> [ 8.536482] __do_sys_init_module+0x1ef/0x220 >> [ 8.536483] ? __pfx___do_sys_init_module+0x10/0x10 >> [ 8.536487] do_syscall_64+0x97/0x190 >> [ 8.536490] ? lockdep_hardirqs_on_prepare+0x171/0x400 >> [ 8.536492] entry_SYSCALL_64_after_hwframe+0x76/0x7e >> [ 8.536494] RIP: 0033:0x7f29997265ae >> [ 8.536499] Code: 48 8b 0d 85 a8 0c 00 f7 d8 64 89 01 48 83 c8 ff >> c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00 >> 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 52 a8 0c 00 f7 d8 64 89 >> 01 48 > > It seems I have missed this following flow (in reverse): > > + igc_ptp_clear_tx_tstamp > + igc_ptp_disable_tx_timestamp > + igc_ptp_set_timestamp_mode > + igc_ptp_reset > + igc_reset > + igc_probe > > And that in igc_ptp_clear_tx_tstamp(), it uses ->ptp_tx_lock. So > igc_ptp_init() needs to be called before igc_reset(). > > I think that is what this splat is telling us. > > Don't know what's the best way forward, reverting the commit in question > or trying to fix the initial problem some other way? > >> [ 8.536500] RSP: 002b:00007ffee505bff8 EFLAGS: 00000246 ORIG_RAX: >> 00000000000000af >> [ 8.536502] RAX: ffffffffffffffda RBX: 000055eafe4a2ac0 RCX: 00007f29997265ae >> [ 8.536503] RDX: 00007f2998e6007d RSI: 00000000001067d6 RDI: 00007f299828c010 >> [ 8.536504] RBP: 00007ffee505c0b0 R08: 000055eafe43a010 R09: 0000000000000007 >> [ 8.536505] R10: 0000000000000007 R11: 0000000000000246 R12: 00007f2998e6007d >> [ 8.536506] R13: 0000000000020000 R14: 000055eafe476280 R15: 000055eafe4a25a0 >> [ 8.536508] >> [ 8.542741] pps pps0: new PPS source ptp0 >> [ 8.550932] igc 0000:0a:00.0 eth0: PHC added >> [ 8.550992] igc 0000:0a:00.0: 4.000 Gb/s available PCIe bandwidth >> (5.0 GT/s PCIe x1 link) >> [ 8.550996] igc 0000:0a:00.0 eth0: MAC: e8:9c:25:6c:40:75 >> [ 8.558160] igc 0000:0a:00.0 eno1: renamed from eth0 >> >> Of course, I immediately wanted to find the first bad commit. >> And now it has already been found: >> 86167183a17e03ec77198897975e9fdfbd53cb0b is the first bad commit >> commit 86167183a17e03ec77198897975e9fdfbd53cb0b (HEAD) >> Author: Corinna Vinschen >> Date: Tue Apr 23 12:24:54 2024 +0200 >> >> igc: fix a log entry using uninitialized netdev >> >> During successful probe, igc logs this: >> >> [ 5.133667] igc 0000:01:00.0 (unnamed net_device) >> (uninitialized): PHC added >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> The reason is that igc_ptp_init() is called very early, even before >> register_netdev() has been called. So the netdev_info() call works >> on a partially uninitialized netdev. >> >> Fix this by calling igc_ptp_init() after register_netdev(), right >> after the media autosense check, just as in igb. Add a comment, >> just as in igb. >> >> Now the log message is fine: >> >> [ 5.200987] igc 0000:01:00.0 eth0: PHC added >> >> Signed-off-by: Corinna Vinschen >> Reviewed-by: Hariprasad Kelam >> Acked-by: Vinicius Costa Gomes >> Tested-by: Naama Meir >> Signed-off-by: Tony Nguyen >> >> drivers/net/ethernet/intel/igc/igc_main.c | 5 +++-- >> 1 file changed, 3 insertions(+), 2 deletions(-) >> >> The next step I was convinced that reverting the commit 86167183a17e >> removed this info message. > > Thank you for the effort. > >> >> I also attach here a full kernel log and build config. >> >> My hardware specs: https://linux-hardware.org/?probe=98ecbf3636 >> >> I hope it helps. >> >> -- >> Best Regards, >> Mike Gavrilov. > > > Cheers,